From 0cba64f7f93cddd5a6752fc2af3056da900bfe5e Mon Sep 17 00:00:00 2001
From: itmammoth <itmammoth@gmail.com>
Date: Wed, 16 Nov 2016 12:40:22 +0700
Subject: [PATCH] Make library

---
 .idea/codeStyleSettings.xml                   | 231 ++++++++++++++++++
 .idea/gradle.xml                              |   3 +-
 .idea/modules.xml                             |   3 +-
 .../itmammoth/releaseanimal/Constant.java     |   5 -
 .../releaseanimal/ReleaseDialogBuilder.java   |  45 ----
 .../itmammoth/releaseanimal/ReleaseNotes.java | 123 ----------
 app/src/main/res/xml/release_animal.xml       |  18 --
 build.gradle                                  |   1 +
 {app => demo}/.gitignore                      |   0
 {app => demo}/build.gradle                    |  10 +-
 {app => demo}/proguard-rules.pro              |   0
 {app => demo}/src/main/AndroidManifest.xml    |   4 +-
 .../releaseanimal}/demo/MainActivity.java     |  18 +-
 .../src/main/res/layout/activity_main.xml     |   2 +-
 .../src/main/res/mipmap-hdpi/ic_launcher.png  | Bin
 .../src/main/res/mipmap-mdpi/ic_launcher.png  | Bin
 .../src/main/res/mipmap-xhdpi/ic_launcher.png | Bin
 .../main/res/mipmap-xxhdpi/ic_launcher.png    | Bin
 .../main/res/mipmap-xxxhdpi/ic_launcher.png   | Bin
 .../src/main/res/values-w820dp/dimens.xml     |   0
 {app => demo}/src/main/res/values/colors.xml  |   0
 {app => demo}/src/main/res/values/dimens.xml  |   0
 demo/src/main/res/values/strings.xml          |   3 +
 {app => demo}/src/main/res/values/styles.xml  |   0
 gradle.properties                             |   2 +-
 library/.gitignore                            |   1 +
 library/build.gradle                          |  53 ++++
 library/proguard-rules.pro                    |  17 ++
 .../EssentialPackageInfoTest.java             |  31 +++
 .../itmammoth/releaseanimal/ParserTest.java   |  28 +++
 .../releaseanimal/PreferenceTest.java         |  49 ++++
 .../releaseanimal/ReleaseAnimalTest.java      |  29 +++
 .../releaseanimal/ReleaseNotesTest.java       |  32 +++
 library/src/main/AndroidManifest.xml          |   9 +
 .../itmammoth/releaseanimal/Constant.java     |   6 +
 .../releaseanimal/EssentialPackageInfo.java   |  36 +++
 .../java/itmammoth/releaseanimal/Parser.java  |   6 +-
 .../itmammoth/releaseanimal/Preference.java   |  44 ++++
 .../releaseanimal/ReleaseAnimal.java          |  59 +++++
 .../itmammoth/releaseanimal/ReleaseNote.java  |   0
 .../itmammoth/releaseanimal/ReleaseNotes.java |  88 +++++++
 .../releaseanimal/VersionManager.java         |  20 ++
 .../itmammoth/releaseanimal/VersionName.java  |  12 +-
 .../src/main/res/layout/release_dialog.xml    |   0
 library/src/main/res/values/releaseanimal.xml |   5 +
 .../src/main/res/values/strings.xml           |   0
 library/src/main/res/xml/releaseanimal.xml    |  18 ++
 .../releaseanimal/ReleaseNoteTest.java        |  13 +
 .../releaseanimal/VersionManagerTest.java     |  32 +++
 .../releaseanimal/VersionNameTest.java        |   6 +-
 settings.gradle                               |   2 +-
 51 files changed, 840 insertions(+), 224 deletions(-)
 create mode 100644 .idea/codeStyleSettings.xml
 delete mode 100644 app/src/main/java/itmammoth/releaseanimal/Constant.java
 delete mode 100644 app/src/main/java/itmammoth/releaseanimal/ReleaseDialogBuilder.java
 delete mode 100644 app/src/main/java/itmammoth/releaseanimal/ReleaseNotes.java
 delete mode 100644 app/src/main/res/xml/release_animal.xml
 rename {app => demo}/.gitignore (100%)
 rename {app => demo}/build.gradle (70%)
 rename {app => demo}/proguard-rules.pro (100%)
 rename {app => demo}/src/main/AndroidManifest.xml (81%)
 rename {app/src/main/java => demo/src/main/java/itmammoth/releaseanimal}/demo/MainActivity.java (67%)
 rename {app => demo}/src/main/res/layout/activity_main.xml (96%)
 rename {app => demo}/src/main/res/mipmap-hdpi/ic_launcher.png (100%)
 rename {app => demo}/src/main/res/mipmap-mdpi/ic_launcher.png (100%)
 rename {app => demo}/src/main/res/mipmap-xhdpi/ic_launcher.png (100%)
 rename {app => demo}/src/main/res/mipmap-xxhdpi/ic_launcher.png (100%)
 rename {app => demo}/src/main/res/mipmap-xxxhdpi/ic_launcher.png (100%)
 rename {app => demo}/src/main/res/values-w820dp/dimens.xml (100%)
 rename {app => demo}/src/main/res/values/colors.xml (100%)
 rename {app => demo}/src/main/res/values/dimens.xml (100%)
 create mode 100644 demo/src/main/res/values/strings.xml
 rename {app => demo}/src/main/res/values/styles.xml (100%)
 create mode 100644 library/.gitignore
 create mode 100644 library/build.gradle
 create mode 100644 library/proguard-rules.pro
 create mode 100644 library/src/androidTest/java/itmammoth/releaseanimal/EssentialPackageInfoTest.java
 create mode 100644 library/src/androidTest/java/itmammoth/releaseanimal/ParserTest.java
 create mode 100644 library/src/androidTest/java/itmammoth/releaseanimal/PreferenceTest.java
 create mode 100644 library/src/androidTest/java/itmammoth/releaseanimal/ReleaseAnimalTest.java
 create mode 100644 library/src/androidTest/java/itmammoth/releaseanimal/ReleaseNotesTest.java
 create mode 100644 library/src/main/AndroidManifest.xml
 create mode 100644 library/src/main/java/itmammoth/releaseanimal/Constant.java
 create mode 100644 library/src/main/java/itmammoth/releaseanimal/EssentialPackageInfo.java
 rename {app => library}/src/main/java/itmammoth/releaseanimal/Parser.java (88%)
 create mode 100644 library/src/main/java/itmammoth/releaseanimal/Preference.java
 create mode 100644 library/src/main/java/itmammoth/releaseanimal/ReleaseAnimal.java
 rename {app => library}/src/main/java/itmammoth/releaseanimal/ReleaseNote.java (100%)
 create mode 100644 library/src/main/java/itmammoth/releaseanimal/ReleaseNotes.java
 create mode 100644 library/src/main/java/itmammoth/releaseanimal/VersionManager.java
 rename {app => library}/src/main/java/itmammoth/releaseanimal/VersionName.java (80%)
 rename {app => library}/src/main/res/layout/release_dialog.xml (100%)
 create mode 100644 library/src/main/res/values/releaseanimal.xml
 rename {app => library}/src/main/res/values/strings.xml (100%)
 create mode 100644 library/src/main/res/xml/releaseanimal.xml
 create mode 100644 library/src/test/java/itmammoth/releaseanimal/ReleaseNoteTest.java
 create mode 100644 library/src/test/java/itmammoth/releaseanimal/VersionManagerTest.java
 rename {app => library}/src/test/java/itmammoth/releaseanimal/VersionNameTest.java (95%)

diff --git a/.idea/codeStyleSettings.xml b/.idea/codeStyleSettings.xml
new file mode 100644
index 0000000..73f689d
--- /dev/null
+++ b/.idea/codeStyleSettings.xml
@@ -0,0 +1,231 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectCodeStyleSettingsManager">
+    <option name="PER_PROJECT_SETTINGS">
+      <value>
+        <option name="CLASS_COUNT_TO_USE_IMPORT_ON_DEMAND" value="99" />
+        <option name="NAMES_COUNT_TO_USE_IMPORT_ON_DEMAND" value="99" />
+        <option name="PACKAGES_TO_USE_IMPORT_ON_DEMAND">
+          <value />
+        </option>
+        <option name="IMPORT_LAYOUT_TABLE">
+          <value>
+            <package name="android" withSubpackages="true" static="false" />
+            <emptyLine />
+            <package name="com" withSubpackages="true" static="false" />
+            <emptyLine />
+            <package name="junit" withSubpackages="true" static="false" />
+            <emptyLine />
+            <package name="net" withSubpackages="true" static="false" />
+            <emptyLine />
+            <package name="org" withSubpackages="true" static="false" />
+            <emptyLine />
+            <package name="java" withSubpackages="true" static="false" />
+            <emptyLine />
+            <package name="javax" withSubpackages="true" static="false" />
+            <emptyLine />
+            <package name="" withSubpackages="true" static="false" />
+            <emptyLine />
+            <package name="" withSubpackages="true" static="true" />
+            <emptyLine />
+          </value>
+        </option>
+        <option name="RIGHT_MARGIN" value="100" />
+        <AndroidXmlCodeStyleSettings>
+          <option name="USE_CUSTOM_SETTINGS" value="true" />
+        </AndroidXmlCodeStyleSettings>
+        <Objective-C-extensions>
+          <option name="GENERATE_INSTANCE_VARIABLES_FOR_PROPERTIES" value="ASK" />
+          <option name="RELEASE_STYLE" value="IVAR" />
+          <option name="TYPE_QUALIFIERS_PLACEMENT" value="BEFORE" />
+          <file>
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Import" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Macro" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Typedef" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Enum" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Constant" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Global" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Struct" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="FunctionPredecl" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Function" />
+          </file>
+          <class>
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Property" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Synthesize" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InitMethod" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="StaticMethod" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InstanceMethod" />
+            <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="DeallocMethod" />
+          </class>
+          <extensions>
+            <pair source="cpp" header="h" />
+            <pair source="c" header="h" />
+          </extensions>
+        </Objective-C-extensions>
+        <XML>
+          <option name="XML_KEEP_LINE_BREAKS" value="false" />
+          <option name="XML_ALIGN_ATTRIBUTES" value="false" />
+          <option name="XML_SPACE_INSIDE_EMPTY_TAG" value="true" />
+        </XML>
+        <codeStyleSettings language="XML">
+          <option name="FORCE_REARRANGE_MODE" value="1" />
+          <indentOptions>
+            <option name="CONTINUATION_INDENT_SIZE" value="4" />
+          </indentOptions>
+          <arrangement>
+            <rules>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>xmlns:android</NAME>
+                      <XML_NAMESPACE>^$</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>xmlns:.*</NAME>
+                      <XML_NAMESPACE>^$</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                  <order>BY_NAME</order>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>.*:id</NAME>
+                      <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>.*:name</NAME>
+                      <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>name</NAME>
+                      <XML_NAMESPACE>^$</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>style</NAME>
+                      <XML_NAMESPACE>^$</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>.*</NAME>
+                      <XML_NAMESPACE>^$</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                  <order>BY_NAME</order>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>.*:layout_width</NAME>
+                      <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>.*:layout_height</NAME>
+                      <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>.*:layout_.*</NAME>
+                      <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                  <order>BY_NAME</order>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>.*:width</NAME>
+                      <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                  <order>BY_NAME</order>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>.*:height</NAME>
+                      <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                  <order>BY_NAME</order>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>.*</NAME>
+                      <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                  <order>BY_NAME</order>
+                </rule>
+              </section>
+              <section>
+                <rule>
+                  <match>
+                    <AND>
+                      <NAME>.*</NAME>
+                      <XML_NAMESPACE>.*</XML_NAMESPACE>
+                    </AND>
+                  </match>
+                  <order>BY_NAME</order>
+                </rule>
+              </section>
+            </rules>
+          </arrangement>
+        </codeStyleSettings>
+      </value>
+    </option>
+    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default (1)" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 0e23f8e..7fb9e90 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -9,7 +9,8 @@
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/app" />
+            <option value="$PROJECT_DIR$/demo" />
+            <option value="$PROJECT_DIR$/library" />
           </set>
         </option>
         <option name="resolveModulePerSourceSet" value="false" />
diff --git a/.idea/modules.xml b/.idea/modules.xml
index a062520..bec945f 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -3,7 +3,8 @@
   <component name="ProjectModuleManager">
     <modules>
       <module fileurl="file://$PROJECT_DIR$/ReleaseAnimal.iml" filepath="$PROJECT_DIR$/ReleaseAnimal.iml" />
-      <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
+      <module fileurl="file://$PROJECT_DIR$/demo/demo.iml" filepath="$PROJECT_DIR$/demo/demo.iml" />
+      <module fileurl="file://$PROJECT_DIR$/library/library.iml" filepath="$PROJECT_DIR$/library/library.iml" />
     </modules>
   </component>
 </project>
\ No newline at end of file
diff --git a/app/src/main/java/itmammoth/releaseanimal/Constant.java b/app/src/main/java/itmammoth/releaseanimal/Constant.java
deleted file mode 100644
index 8954216..0000000
--- a/app/src/main/java/itmammoth/releaseanimal/Constant.java
+++ /dev/null
@@ -1,5 +0,0 @@
-package itmammoth.releaseanimal;
-
-class Constant {
-    static final String LOG_TAG = "release_animal";
-}
diff --git a/app/src/main/java/itmammoth/releaseanimal/ReleaseDialogBuilder.java b/app/src/main/java/itmammoth/releaseanimal/ReleaseDialogBuilder.java
deleted file mode 100644
index 427ee59..0000000
--- a/app/src/main/java/itmammoth/releaseanimal/ReleaseDialogBuilder.java
+++ /dev/null
@@ -1,45 +0,0 @@
-package itmammoth.releaseanimal;
-
-import android.annotation.SuppressLint;
-import android.content.Context;
-import android.content.DialogInterface;
-import android.support.annotation.NonNull;
-import android.support.v7.app.AlertDialog;
-import android.view.LayoutInflater;
-import android.view.View;
-
-public class ReleaseDialogBuilder extends AlertDialog.Builder {
-
-    private ReleaseNotes releaseNotes;
-
-    public ReleaseDialogBuilder(@NonNull Context context) {
-        super(context);
-        setDefaultAttributes();
-    }
-
-    private void setDefaultAttributes() {
-        LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
-        @SuppressLint("InflateParams") final View layout = inflater.inflate(R.layout.release_dialog, null)
-                .findViewById(R.id.release_dialog_container);
-        setView(layout);
-        setTitle("アップデート情報");
-        setCancelable(false);
-        setPositiveButton("閉じる", new DialogInterface.OnClickListener() {
-            @Override
-            public void onClick(DialogInterface dialogInterface, int i) {
-                releaseNotes.markShown();
-            }
-        });
-    }
-
-    @Override
-    public AlertDialog show() {
-        releaseNotes = new ReleaseNotes(getContext());
-        if (releaseNotes.hasUnshownMessages()) {
-            setMessage(releaseNotes.getUnshownMessages());
-            return super.show();
-        }
-        return null;
-    }
-}
-
diff --git a/app/src/main/java/itmammoth/releaseanimal/ReleaseNotes.java b/app/src/main/java/itmammoth/releaseanimal/ReleaseNotes.java
deleted file mode 100644
index 1433b76..0000000
--- a/app/src/main/java/itmammoth/releaseanimal/ReleaseNotes.java
+++ /dev/null
@@ -1,123 +0,0 @@
-package itmammoth.releaseanimal;
-
-import android.content.Context;
-import android.content.SharedPreferences;
-import android.content.pm.PackageInfo;
-import android.content.pm.PackageManager;
-import android.util.Log;
-
-import java.text.ParseException;
-import java.text.SimpleDateFormat;
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.List;
-
-class ReleaseNotes {
-
-    private static final String PREF_KEY = "release_animal";
-    private static final String PREF_V_KEY_LATEST_SHOWN = "latest_shown";
-
-    private final Context context;
-    private final SharedPreferences pref;
-    private final PackageInfo packageInfo;
-    private final VersionName currentVersionName;
-    private final VersionName latestShownVersionName;
-    private final List<ReleaseNote> notes;
-
-    ReleaseNotes(Context context) {
-        this.context = context;
-        pref = context.getSharedPreferences(PREF_KEY, Context.MODE_PRIVATE);
-        packageInfo = getPackageInfo();
-        currentVersionName = new VersionName(packageInfo.versionName);
-        latestShownVersionName = new VersionName(pref.getString(PREF_V_KEY_LATEST_SHOWN, "0.0.0.0"));
-        notes = new Parser(context.getResources().getXml(R.xml.release_animal)).parse();
-        Log.d(Constant.LOG_TAG, notes.toString());
-    }
-
-    /**
-     * Returns whether there are any messages that haven't been shown yet.
-     * @return whether there are or not
-     */
-    boolean hasUnshownMessages() {
-        try {
-            PackageInfo packageInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
-            VersionName current = new VersionName(packageInfo.versionName);
-            if (current.greaterThan(latestShownVersionName)) {
-                return hasUnshownNotes();
-            }
-        } catch (PackageManager.NameNotFoundException e) {
-            Log.e(Constant.LOG_TAG, e.getLocalizedMessage());
-        }
-        return false;
-    }
-
-    /**
-     * Returns messages that haven't shown yet
-     * @return Not shown messages
-     */
-    String getUnshownMessages() {
-        StringBuilder messages = new StringBuilder();
-        for (ReleaseNote releaseNote : getUnshownNotes()) {
-            messages.append(releaseNote.versionName.toString());
-            messages.append("\n");
-            for (String m : releaseNote.messages) {
-                messages.append(m);
-                messages.append("\n");
-            }
-            messages.append("\n\n");
-        }
-        return messages.toString();
-    }
-
-    /**
-     * Marks shown on release note messages whose version name is less than or equal to current one.
-     */
-    void markShown() {
-        List<ReleaseNote> unshownNotes = getUnshownNotes();
-        VersionName newLatestShownVersionName = unshownNotes.get(unshownNotes.size() - 1).versionName;
-        pref.edit()
-            .putString(PREF_V_KEY_LATEST_SHOWN, newLatestShownVersionName.toString())
-            .apply();
-    }
-
-    private PackageInfo getPackageInfo() {
-        try {
-            return context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
-        } catch (PackageManager.NameNotFoundException e) {
-            Log.e(Constant.LOG_TAG, e.getLocalizedMessage());
-        }
-        return null;
-    }
-
-    private List<ReleaseNote> getUnshownNotes() {
-        List<ReleaseNote> notShownNotes = new ArrayList<>();
-        for (ReleaseNote note : notes) {
-            if (needToShow(note)) {
-                notShownNotes.add(note);
-            }
-        }
-        return notShownNotes;
-    }
-
-    private boolean hasUnshownNotes() {
-        return getUnshownNotes().size() > 0;
-    }
-
-    private boolean needToShow(ReleaseNote note) {
-        return      note.versionName.greaterThan(latestShownVersionName)
-                &&  currentVersionName.greaterThanOrEqualTo(note.versionName)
-                &&  note.date.compareTo(getFirstInstallDate()) >= 0
-                &&  note.date.compareTo(new Date()) <= 0;
-    }
-
-    private Date getFirstInstallDate() {
-        Date d = new Date(packageInfo.firstInstallTime);
-        SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-DD");
-        try {
-            return sdf.parse(sdf.format(d));
-        } catch (ParseException e) {
-            Log.e(Constant.LOG_TAG, e.getLocalizedMessage());
-        }
-        return null;
-    }
-}
diff --git a/app/src/main/res/xml/release_animal.xml b/app/src/main/res/xml/release_animal.xml
deleted file mode 100644
index 7fdc330..0000000
--- a/app/src/main/res/xml/release_animal.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<releaseNotes>
-    <note versionName="0.0.0.1" date="1900-01-01">
-        <message>・初回インストールより過去のものは表示されません</message>
-    </note>
-    <note versionName="0.0.0.2" date="2016-10-26">
-        <message>・XXX機能を追加しました</message>
-        <message>・細かなバグフィックス</message>
-    </note>
-    <note versionName="0.0.1.0" date="2016-10-26">
-        <message>・YYY機能を強化しました</message>
-        <message>・ZZZをするようにしました</message>
-        <message>・細かなバグフィックス</message>
-    </note>
-    <note versionName="9.9.9.9" date="2999-12-31">
-        <message>・未来のものは表示されません</message>
-    </note>
-</releaseNotes>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index c20bca1..ec7f4cd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,6 +6,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:2.2.2'
+        classpath 'com.novoda:bintray-release:0.4.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/app/.gitignore b/demo/.gitignore
similarity index 100%
rename from app/.gitignore
rename to demo/.gitignore
diff --git a/app/build.gradle b/demo/build.gradle
similarity index 70%
rename from app/build.gradle
rename to demo/build.gradle
index fe4dbc0..a6934bb 100644
--- a/app/build.gradle
+++ b/demo/build.gradle
@@ -9,7 +9,6 @@ android {
         targetSdkVersion 25
         versionCode 1
         versionName "9.9.9.9"
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
         release {
@@ -32,11 +31,6 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:25.0.0'
-
-    // https://mvnrepository.com/artifact/org.apache.maven/maven-artifact
-    compile group: 'org.apache.maven', name: 'maven-artifact', version: '3.3.9'
-
-    testCompile 'junit:junit:4.12'
+    compile 'com.android.support:appcompat-v7:25.0.1'
+    compile project(':library')
 }
diff --git a/app/proguard-rules.pro b/demo/proguard-rules.pro
similarity index 100%
rename from app/proguard-rules.pro
rename to demo/proguard-rules.pro
diff --git a/app/src/main/AndroidManifest.xml b/demo/src/main/AndroidManifest.xml
similarity index 81%
rename from app/src/main/AndroidManifest.xml
rename to demo/src/main/AndroidManifest.xml
index 0436083..3a92856 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/demo/src/main/AndroidManifest.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="itmammoth.releaseanimal">
+    package="itmammoth.releaseanimal.demo">
 
     <application
         android:allowBackup="true"
@@ -8,7 +8,7 @@
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name="demo.MainActivity">
+        <activity android:name="itmammoth.releaseanimal.demo.MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
diff --git a/app/src/main/java/demo/MainActivity.java b/demo/src/main/java/itmammoth/releaseanimal/demo/MainActivity.java
similarity index 67%
rename from app/src/main/java/demo/MainActivity.java
rename to demo/src/main/java/itmammoth/releaseanimal/demo/MainActivity.java
index 6534850..f596a03 100644
--- a/app/src/main/java/demo/MainActivity.java
+++ b/demo/src/main/java/itmammoth/releaseanimal/demo/MainActivity.java
@@ -1,4 +1,4 @@
-package demo;
+package itmammoth.releaseanimal.demo;
 
 import android.content.Context;
 import android.content.SharedPreferences;
@@ -8,8 +8,7 @@
 import android.support.v7.app.AppCompatActivity;
 import android.widget.TextView;
 
-import itmammoth.releaseanimal.R;
-import itmammoth.releaseanimal.ReleaseDialogBuilder;
+import itmammoth.releaseanimal.ReleaseAnimal;
 
 public class MainActivity extends AppCompatActivity {
 
@@ -19,9 +18,10 @@ protected void onCreate(Bundle savedInstanceState) {
         setContentView(R.layout.activity_main);
 
         setCurrentVersionName();
-        setLatestShownVersionName();
+        setLastShownVersionName();
 
-        new ReleaseDialogBuilder(this).show();
+        ReleaseAnimal.resetVersion(this);    // Comment this out if necessary
+        new ReleaseAnimal.Builder(this).show();
     }
 
     private void setCurrentVersionName() {
@@ -34,9 +34,9 @@ private void setCurrentVersionName() {
         }
     }
 
-    private void setLatestShownVersionName() {
-        SharedPreferences pref = getSharedPreferences("release_animal", Context.MODE_PRIVATE);
-        String latestShown = "Latest shown version: " + pref.getString("latest_shown", "0.0.0.0");
-        ((TextView) findViewById(R.id.txt_latest_shown)).setText(latestShown);
+    private void setLastShownVersionName() {
+        SharedPreferences pref = getSharedPreferences("releaseanimal", Context.MODE_PRIVATE);
+        String lastShown = "Last shown version: " + pref.getString("last_shown", "0.0.0.0");
+        ((TextView) findViewById(R.id.txt_latest_shown)).setText(lastShown);
     }
 }
diff --git a/app/src/main/res/layout/activity_main.xml b/demo/src/main/res/layout/activity_main.xml
similarity index 96%
rename from app/src/main/res/layout/activity_main.xml
rename to demo/src/main/res/layout/activity_main.xml
index 85c425e..9e7f5aa 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/demo/src/main/res/layout/activity_main.xml
@@ -8,7 +8,7 @@
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
-    tools:context="demo.MainActivity">
+    tools:context=".MainActivity">
 
     <TextView
         android:layout_width="wrap_content"
diff --git a/app/src/main/res/mipmap-hdpi/ic_launcher.png b/demo/src/main/res/mipmap-hdpi/ic_launcher.png
similarity index 100%
rename from app/src/main/res/mipmap-hdpi/ic_launcher.png
rename to demo/src/main/res/mipmap-hdpi/ic_launcher.png
diff --git a/app/src/main/res/mipmap-mdpi/ic_launcher.png b/demo/src/main/res/mipmap-mdpi/ic_launcher.png
similarity index 100%
rename from app/src/main/res/mipmap-mdpi/ic_launcher.png
rename to demo/src/main/res/mipmap-mdpi/ic_launcher.png
diff --git a/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/demo/src/main/res/mipmap-xhdpi/ic_launcher.png
similarity index 100%
rename from app/src/main/res/mipmap-xhdpi/ic_launcher.png
rename to demo/src/main/res/mipmap-xhdpi/ic_launcher.png
diff --git a/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/demo/src/main/res/mipmap-xxhdpi/ic_launcher.png
similarity index 100%
rename from app/src/main/res/mipmap-xxhdpi/ic_launcher.png
rename to demo/src/main/res/mipmap-xxhdpi/ic_launcher.png
diff --git a/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/demo/src/main/res/mipmap-xxxhdpi/ic_launcher.png
similarity index 100%
rename from app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
rename to demo/src/main/res/mipmap-xxxhdpi/ic_launcher.png
diff --git a/app/src/main/res/values-w820dp/dimens.xml b/demo/src/main/res/values-w820dp/dimens.xml
similarity index 100%
rename from app/src/main/res/values-w820dp/dimens.xml
rename to demo/src/main/res/values-w820dp/dimens.xml
diff --git a/app/src/main/res/values/colors.xml b/demo/src/main/res/values/colors.xml
similarity index 100%
rename from app/src/main/res/values/colors.xml
rename to demo/src/main/res/values/colors.xml
diff --git a/app/src/main/res/values/dimens.xml b/demo/src/main/res/values/dimens.xml
similarity index 100%
rename from app/src/main/res/values/dimens.xml
rename to demo/src/main/res/values/dimens.xml
diff --git a/demo/src/main/res/values/strings.xml b/demo/src/main/res/values/strings.xml
new file mode 100644
index 0000000..90a0557
--- /dev/null
+++ b/demo/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">ReleaseAnimal Demo</string>
+</resources>
diff --git a/app/src/main/res/values/styles.xml b/demo/src/main/res/values/styles.xml
similarity index 100%
rename from app/src/main/res/values/styles.xml
rename to demo/src/main/res/values/styles.xml
diff --git a/gradle.properties b/gradle.properties
index aac7c9b..082b4e0 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -9,7 +9,7 @@
 
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
-org.gradle.jvmargs=-Xmx1536m
+
 
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
diff --git a/library/.gitignore b/library/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/library/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/library/build.gradle b/library/build.gradle
new file mode 100644
index 0000000..20a4fb9
--- /dev/null
+++ b/library/build.gradle
@@ -0,0 +1,53 @@
+apply plugin: 'com.android.library'
+apply plugin: 'com.novoda.bintray-release'
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.0"
+
+    defaultConfig {
+        minSdkVersion 15
+        targetSdkVersion 25
+        versionCode 1
+        versionName "0.0.1"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+    packagingOptions {
+        exclude 'META-INF/DEPENDENCIES.txt'
+        exclude 'META-INF/LICENSE.txt'
+        exclude 'META-INF/NOTICE.txt'
+        exclude 'META-INF/NOTICE'
+        exclude 'META-INF/LICENSE'
+        exclude 'META-INF/DEPENDENCIES'
+        exclude 'META-INF/notice.txt'
+        exclude 'META-INF/license.txt'
+        exclude 'META-INF/dependencies.txt'
+        exclude 'META-INF/LGPL2.1'
+    }
+}
+
+dependencies {
+    compile 'com.android.support:appcompat-v7:25.0.1'
+    // https://mvnrepository.com/artifact/org.apache.maven/maven-artifact
+    compile group: 'org.apache.maven', name: 'maven-artifact', version: '3.3.9'
+
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    testCompile 'junit:junit:4.12'
+}
+
+publish {
+    userOrg = 'itmammoth-bintray'
+    groupId = 'itmammoth.releaseanimal'
+    artifactId = 'ReleaseAnimal'
+    publishVersion = '0.0.1'
+    desc = 'Display release notes dialog without pain.'
+    website = 'https://github.com/novoda/bintray-release'
+}
diff --git a/library/proguard-rules.pro b/library/proguard-rules.pro
new file mode 100644
index 0000000..8b60e27
--- /dev/null
+++ b/library/proguard-rules.pro
@@ -0,0 +1,17 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /Users/madmax/Library/Android/sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
diff --git a/library/src/androidTest/java/itmammoth/releaseanimal/EssentialPackageInfoTest.java b/library/src/androidTest/java/itmammoth/releaseanimal/EssentialPackageInfoTest.java
new file mode 100644
index 0000000..945aac9
--- /dev/null
+++ b/library/src/androidTest/java/itmammoth/releaseanimal/EssentialPackageInfoTest.java
@@ -0,0 +1,31 @@
+package itmammoth.releaseanimal;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+@RunWith(AndroidJUnit4.class)
+public class EssentialPackageInfoTest {
+
+    private Context context;
+
+    @Before
+    public void setUp() {
+        context = InstrumentationRegistry.getTargetContext();
+    }
+
+    @Test
+    public void getInstance() throws Exception {
+        EssentialPackageInfo essentialPackageInfo = EssentialPackageInfo.getInstance(context);
+        assertTrue(essentialPackageInfo != null);
+        // Fixme: Why null?
+        assertEquals("0.1.0", essentialPackageInfo.versionName);
+        assertNotNull(essentialPackageInfo.firstInstallDate);
+    }
+}
\ No newline at end of file
diff --git a/library/src/androidTest/java/itmammoth/releaseanimal/ParserTest.java b/library/src/androidTest/java/itmammoth/releaseanimal/ParserTest.java
new file mode 100644
index 0000000..a8497a7
--- /dev/null
+++ b/library/src/androidTest/java/itmammoth/releaseanimal/ParserTest.java
@@ -0,0 +1,28 @@
+package itmammoth.releaseanimal;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
+@RunWith(AndroidJUnit4.class)
+public class ParserTest {
+    @Test
+    public void parse() throws Exception {
+        Context context = InstrumentationRegistry.getTargetContext();
+        List<ReleaseNote> notes = new Parser(context.getResources().getXml(R.xml.releaseanimal)).parse();
+
+        assertEquals(4, notes.size());
+
+        ReleaseNote note = notes.get(0);
+        assertEquals(new VersionName("0.0.0.1"), note.versionName);
+        assertEquals(Parser.SDF.parse("1900-01-01"), note.date);
+        assertEquals("- Never show the notes that had been released before installing the app", note.messages.get(0));
+    }
+}
\ No newline at end of file
diff --git a/library/src/androidTest/java/itmammoth/releaseanimal/PreferenceTest.java b/library/src/androidTest/java/itmammoth/releaseanimal/PreferenceTest.java
new file mode 100644
index 0000000..f714598
--- /dev/null
+++ b/library/src/androidTest/java/itmammoth/releaseanimal/PreferenceTest.java
@@ -0,0 +1,49 @@
+package itmammoth.releaseanimal;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+@RunWith(AndroidJUnit4.class)
+public class PreferenceTest {
+
+    private Context context;
+
+    @Before
+    public void setUp() {
+        context = InstrumentationRegistry.getTargetContext();
+        SharedPreferences sharedPreferences = context.getSharedPreferences("releaseanimal", Context.MODE_PRIVATE);
+        sharedPreferences
+                .edit()
+                .putString("last_shown", Constant.FALLBACK_VERSION_NAME)
+                .apply();
+    }
+
+    @Test
+    public void getLastShownVersionName_whenLastShownNotSaved() throws Exception {
+        Preference preference = new Preference(context);
+        assertEquals(Constant.FALLBACK_VERSION_NAME, preference.getLastShownVersionName());
+    }
+
+    @Test
+    public void markShown() throws Exception {
+        Preference preference = new Preference(context);
+        preference.markShown("1.2.3");
+        assertEquals("1.2.3", preference.getLastShownVersionName());
+    }
+
+    @Test
+    public void reset() throws Exception {
+        Preference preference = new Preference(context);
+        preference.markShown("1.2.3");
+        preference.reset();
+        assertEquals(Constant.FALLBACK_VERSION_NAME, preference.getLastShownVersionName());
+    }
+}
\ No newline at end of file
diff --git a/library/src/androidTest/java/itmammoth/releaseanimal/ReleaseAnimalTest.java b/library/src/androidTest/java/itmammoth/releaseanimal/ReleaseAnimalTest.java
new file mode 100644
index 0000000..57e625c
--- /dev/null
+++ b/library/src/androidTest/java/itmammoth/releaseanimal/ReleaseAnimalTest.java
@@ -0,0 +1,29 @@
+package itmammoth.releaseanimal;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+@RunWith(AndroidJUnit4.class)
+public class ReleaseAnimalTest {
+
+    private Context context;
+
+    @Before
+    public void setUp() {
+        this.context = InstrumentationRegistry.getTargetContext();
+    }
+
+    @Test
+    public void Builder_show() throws Exception {
+        ReleaseAnimal.Builder builder = new ReleaseAnimal.Builder(context);
+        assertNull(builder.show());
+    }
+}
\ No newline at end of file
diff --git a/library/src/androidTest/java/itmammoth/releaseanimal/ReleaseNotesTest.java b/library/src/androidTest/java/itmammoth/releaseanimal/ReleaseNotesTest.java
new file mode 100644
index 0000000..9f623d5
--- /dev/null
+++ b/library/src/androidTest/java/itmammoth/releaseanimal/ReleaseNotesTest.java
@@ -0,0 +1,32 @@
+package itmammoth.releaseanimal;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+@RunWith(AndroidJUnit4.class)
+public class ReleaseNotesTest {
+
+    private Context context;
+
+    @Before
+    public void setUp() {
+        this.context = InstrumentationRegistry.getTargetContext();
+    }
+
+    @Test
+    public void resetVersion() throws Exception {
+        SharedPreferences sharedPreferences = context.getSharedPreferences("releaseanimal", Context.MODE_PRIVATE);
+        sharedPreferences.edit().putString("latest_shown", "9.9.9.9").apply();
+
+        ReleaseNotes.resetVersion(context);
+        assertEquals("0.0.0.0", sharedPreferences.getString("last_shown", null));
+    }
+}
\ No newline at end of file
diff --git a/library/src/main/AndroidManifest.xml b/library/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..9877545
--- /dev/null
+++ b/library/src/main/AndroidManifest.xml
@@ -0,0 +1,9 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="itmammoth.releaseanimal">
+
+    <application android:allowBackup="true" android:label="@string/app_name"
+        android:supportsRtl="true">
+
+    </application>
+
+</manifest>
diff --git a/library/src/main/java/itmammoth/releaseanimal/Constant.java b/library/src/main/java/itmammoth/releaseanimal/Constant.java
new file mode 100644
index 0000000..0218168
--- /dev/null
+++ b/library/src/main/java/itmammoth/releaseanimal/Constant.java
@@ -0,0 +1,6 @@
+package itmammoth.releaseanimal;
+
+class Constant {
+    static final String LOG_TAG = "releaseanimal";
+    static final String FALLBACK_VERSION_NAME = "0.0.0.0";
+}
diff --git a/library/src/main/java/itmammoth/releaseanimal/EssentialPackageInfo.java b/library/src/main/java/itmammoth/releaseanimal/EssentialPackageInfo.java
new file mode 100644
index 0000000..c4b0099
--- /dev/null
+++ b/library/src/main/java/itmammoth/releaseanimal/EssentialPackageInfo.java
@@ -0,0 +1,36 @@
+package itmammoth.releaseanimal;
+
+import android.content.Context;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.support.annotation.NonNull;
+import android.util.Log;
+
+import java.text.ParseException;
+import java.util.Date;
+
+class EssentialPackageInfo {
+
+    private static EssentialPackageInfo instance;
+
+    String versionName;
+    Date firstInstallDate;
+
+    static EssentialPackageInfo getInstance(@NonNull Context context) {
+        if (instance == null) {
+            instance = new EssentialPackageInfo();
+            try {
+                PackageInfo packageInfo =
+                        context.getPackageManager()
+                                .getPackageInfo(context.getPackageName(), 0);
+                instance.versionName = packageInfo.versionName;
+                instance.firstInstallDate = Parser.SDF.parse(Parser.SDF.format(new Date(packageInfo.firstInstallTime)));
+            } catch (PackageManager.NameNotFoundException | ParseException e) {
+                Log.e(Constant.LOG_TAG, e.getLocalizedMessage());
+            }
+        }
+        return instance;
+    }
+
+    private EssentialPackageInfo() {}
+}
diff --git a/app/src/main/java/itmammoth/releaseanimal/Parser.java b/library/src/main/java/itmammoth/releaseanimal/Parser.java
similarity index 88%
rename from app/src/main/java/itmammoth/releaseanimal/Parser.java
rename to library/src/main/java/itmammoth/releaseanimal/Parser.java
index 724a27f..d9bcb64 100644
--- a/app/src/main/java/itmammoth/releaseanimal/Parser.java
+++ b/library/src/main/java/itmammoth/releaseanimal/Parser.java
@@ -11,11 +11,12 @@
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Locale;
 
 class Parser {
 
     private final XmlResourceParser parser;
-    private final SimpleDateFormat dateParser = new SimpleDateFormat("yyyy-MM-dd");
+    static final SimpleDateFormat SDF = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
 
     Parser(XmlResourceParser parser) {
         this.parser = parser;
@@ -36,9 +37,10 @@ List<ReleaseNote> parse() {
                         if ("note".equals(name)) {
                             note = new ReleaseNote();
                             note.versionName = new VersionName(parser.getAttributeValue(null, "versionName"));
-                            note.date = dateParser.parse(parser.getAttributeValue(null, "date"));
+                            note.date = SDF.parse(parser.getAttributeValue(null, "date"));
                             note.messages = new ArrayList<>();
                         } else if ("message".equals(name)) {
+                            assert note != null;
                             note.messages.add(parser.nextText());
                         }
                         break;
diff --git a/library/src/main/java/itmammoth/releaseanimal/Preference.java b/library/src/main/java/itmammoth/releaseanimal/Preference.java
new file mode 100644
index 0000000..a2e74bb
--- /dev/null
+++ b/library/src/main/java/itmammoth/releaseanimal/Preference.java
@@ -0,0 +1,44 @@
+package itmammoth.releaseanimal;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.support.annotation.NonNull;
+
+class Preference {
+
+    private static final String PREF_KEY = "releaseanimal";
+    private static final String PREF_V_KEY_LAST_SHOWN = "last_shown";
+
+    private final SharedPreferences sharedPreferences;
+    private String lastShown;
+
+    Preference(@NonNull Context context) {
+        sharedPreferences = getSharedPreferences(context);
+        lastShown = sharedPreferences.getString(
+                PREF_V_KEY_LAST_SHOWN, Constant.FALLBACK_VERSION_NAME);
+    }
+
+    String getLastShownVersionName() {
+        return lastShown;
+    }
+
+    void markShown(@NonNull String versionName) {
+        sharedPreferences
+                .edit()
+                .putString(PREF_V_KEY_LAST_SHOWN, versionName)
+                .apply();
+        lastShown = versionName;
+    }
+
+    void reset() {
+        sharedPreferences
+                .edit()
+                .putString(PREF_V_KEY_LAST_SHOWN, Constant.FALLBACK_VERSION_NAME)
+                .apply();
+        lastShown = Constant.FALLBACK_VERSION_NAME;
+    }
+
+    private static SharedPreferences getSharedPreferences(@NonNull Context context) {
+        return context.getSharedPreferences(PREF_KEY, Context.MODE_PRIVATE);
+    }
+}
diff --git a/library/src/main/java/itmammoth/releaseanimal/ReleaseAnimal.java b/library/src/main/java/itmammoth/releaseanimal/ReleaseAnimal.java
new file mode 100644
index 0000000..90089e1
--- /dev/null
+++ b/library/src/main/java/itmammoth/releaseanimal/ReleaseAnimal.java
@@ -0,0 +1,59 @@
+package itmammoth.releaseanimal;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v7.app.AlertDialog;
+import android.view.LayoutInflater;
+import android.view.View;
+
+public class ReleaseAnimal {
+
+    public static class Builder extends AlertDialog.Builder {
+
+        private final Context context;
+        private ReleaseNotes releaseNotes;
+
+        public Builder(@NonNull Context context) {
+            super(context);
+            this.context = context;
+            setDefaultAttributes();
+        }
+
+        private void setDefaultAttributes() {
+            LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+            @SuppressLint("InflateParams") final View layout = inflater.inflate(R.layout.release_dialog, null)
+                    .findViewById(R.id.release_dialog_container);
+            setView(layout);
+            setTitle(R.string.releaseanimal_dialog_title);
+            setCancelable(false);
+            setPositiveButton(R.string.releaseanimal_close, new DialogInterface.OnClickListener() {
+                @Override
+                public void onClick(DialogInterface dialogInterface, int i) {
+                    releaseNotes.markShown();
+                }
+            });
+        }
+
+        @Override
+        @Nullable
+        public AlertDialog show() {
+            releaseNotes = new ReleaseNotes(context);
+            if (releaseNotes.hasUnshownMessages()) {
+                setMessage(releaseNotes.getUnshownMessages());
+                return super.show();
+            }
+            return null;
+        }
+    }
+
+    /**
+     * Reset latest shown version stored in shared preference.
+     * @param context Context
+     */
+    public static void resetVersion(@NonNull Context context) {
+        ReleaseNotes.resetVersion(context);
+    }
+}
diff --git a/app/src/main/java/itmammoth/releaseanimal/ReleaseNote.java b/library/src/main/java/itmammoth/releaseanimal/ReleaseNote.java
similarity index 100%
rename from app/src/main/java/itmammoth/releaseanimal/ReleaseNote.java
rename to library/src/main/java/itmammoth/releaseanimal/ReleaseNote.java
diff --git a/library/src/main/java/itmammoth/releaseanimal/ReleaseNotes.java b/library/src/main/java/itmammoth/releaseanimal/ReleaseNotes.java
new file mode 100644
index 0000000..0825679
--- /dev/null
+++ b/library/src/main/java/itmammoth/releaseanimal/ReleaseNotes.java
@@ -0,0 +1,88 @@
+package itmammoth.releaseanimal;
+
+import android.content.Context;
+import android.support.annotation.NonNull;
+import android.util.Log;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+class ReleaseNotes {
+
+    private final Preference pref;
+    private final EssentialPackageInfo packageInfo;
+    private final VersionManager versionManager;
+    private final List<ReleaseNote> notes;
+
+    ReleaseNotes(@NonNull Context context) {
+        pref = new Preference(context);
+        packageInfo = EssentialPackageInfo.getInstance(context);
+        versionManager = new VersionManager(packageInfo.versionName, pref.getLastShownVersionName());
+        notes = new Parser(context.getResources().getXml(R.xml.releaseanimal)).parse();
+        Log.d(Constant.LOG_TAG, notes.toString());
+    }
+
+    /**
+     * Reset the last shown version in the shared preferences.
+     * @param context Context
+     */
+    static void resetVersion(@NonNull Context context) {
+        new Preference(context).reset();
+    }
+
+    /**
+     * Returns whether there are any messages that haven't been shown yet.
+     * @return whether there are or not
+     */
+    boolean hasUnshownMessages() {
+        return versionManager.versionUpdated() && hasUnshownNotes();
+    }
+
+    /**
+     * Returns messages that haven't shown yet
+     * @return Not shown messages
+     */
+    String getUnshownMessages() {
+        StringBuilder messages = new StringBuilder();
+        for (ReleaseNote releaseNote : getUnshownNotes()) {
+            messages.append(releaseNote.versionName.toString());
+            messages.append("\n");
+            for (String m : releaseNote.messages) {
+                messages.append(m);
+                messages.append("\n");
+            }
+            messages.append("\n\n");
+        }
+        return messages.toString();
+    }
+
+    /**
+     * Marks shown on release note messages whose version name is less than or equal to current one.
+     */
+    void markShown() {
+        List<ReleaseNote> unshownNotes = getUnshownNotes();
+        VersionName newLatestShownVersionName = unshownNotes.get(unshownNotes.size() - 1).versionName;
+        pref.markShown(newLatestShownVersionName.toString());
+    }
+
+    private List<ReleaseNote> getUnshownNotes() {
+        List<ReleaseNote> notShownNotes = new ArrayList<>();
+        for (ReleaseNote note : notes) {
+            if (needToShow(note)) {
+                notShownNotes.add(note);
+            }
+        }
+        return notShownNotes;
+    }
+
+    private boolean hasUnshownNotes() {
+        return getUnshownNotes().size() > 0;
+    }
+
+    private boolean needToShow(ReleaseNote note) {
+        return      versionManager.needToShow(note.versionName)
+                &&  note.date.compareTo(packageInfo.firstInstallDate) >= 0
+                &&  note.date.compareTo(new Date()) <= 0;
+    }
+}
diff --git a/library/src/main/java/itmammoth/releaseanimal/VersionManager.java b/library/src/main/java/itmammoth/releaseanimal/VersionManager.java
new file mode 100644
index 0000000..a3e1a34
--- /dev/null
+++ b/library/src/main/java/itmammoth/releaseanimal/VersionManager.java
@@ -0,0 +1,20 @@
+package itmammoth.releaseanimal;
+
+class VersionManager {
+
+    private final VersionName current;
+    private final VersionName lastShown;
+
+    VersionManager(String current, String lastShown) {
+        this.current = new VersionName(current != null ? current : Constant.FALLBACK_VERSION_NAME);
+        this.lastShown = new VersionName(lastShown != null ? lastShown : Constant.FALLBACK_VERSION_NAME);
+    }
+
+    boolean needToShow(VersionName target) {
+        return target.greaterThan(lastShown) && current.greaterThanOrEqualTo(target);
+    }
+
+    boolean versionUpdated() {
+        return current.greaterThan(lastShown);
+    }
+}
diff --git a/app/src/main/java/itmammoth/releaseanimal/VersionName.java b/library/src/main/java/itmammoth/releaseanimal/VersionName.java
similarity index 80%
rename from app/src/main/java/itmammoth/releaseanimal/VersionName.java
rename to library/src/main/java/itmammoth/releaseanimal/VersionName.java
index 3dfe0ef..3225dba 100644
--- a/app/src/main/java/itmammoth/releaseanimal/VersionName.java
+++ b/library/src/main/java/itmammoth/releaseanimal/VersionName.java
@@ -4,12 +4,8 @@
 
 import org.apache.maven.artifact.versioning.DefaultArtifactVersion;
 
-import java.util.regex.Pattern;
-
 class VersionName implements Comparable<VersionName> {
 
-    private static final Pattern SEPARATOR = Pattern.compile(".", Pattern.LITERAL);
-
     private final String value;
 
     VersionName(String versionName) {
@@ -23,6 +19,14 @@ public int compareTo(@NonNull VersionName that) {
         return thisVersion.compareTo(thatVersion);
     }
 
+    @Override
+    public boolean equals(Object that) {
+        if (that instanceof VersionName) {
+            return value.equals(((VersionName) that).value);
+        }
+        return super.equals(that);
+    }
+
     boolean greaterThan(VersionName other) {
         return compareTo(other) > 0;
     }
diff --git a/app/src/main/res/layout/release_dialog.xml b/library/src/main/res/layout/release_dialog.xml
similarity index 100%
rename from app/src/main/res/layout/release_dialog.xml
rename to library/src/main/res/layout/release_dialog.xml
diff --git a/library/src/main/res/values/releaseanimal.xml b/library/src/main/res/values/releaseanimal.xml
new file mode 100644
index 0000000..395d8b9
--- /dev/null
+++ b/library/src/main/res/values/releaseanimal.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="releaseanimal_dialog_title">Release notes</string>
+    <string name="releaseanimal_close">Close</string>
+</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/library/src/main/res/values/strings.xml
similarity index 100%
rename from app/src/main/res/values/strings.xml
rename to library/src/main/res/values/strings.xml
diff --git a/library/src/main/res/xml/releaseanimal.xml b/library/src/main/res/xml/releaseanimal.xml
new file mode 100644
index 0000000..ce4730f
--- /dev/null
+++ b/library/src/main/res/xml/releaseanimal.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<releaseNotes>
+    <note versionName="0.0.0.1" date="1900-01-01">
+        <message>- Never show the notes that had been released before installing the app</message>
+    </note>
+    <note versionName="0.0.0.2" date="2016-11-16">
+        <message>- New awesome features!</message>
+        <message>- Small bug fixes</message>
+    </note>
+    <note versionName="0.0.1.0" date="2016-11-16">
+        <message>- Foo bar yeah!</message>
+        <message>- Pen pineapple apple pen!</message>
+        <message>- Blah blah blah</message>
+    </note>
+    <note versionName="9.9.9.9" date="2999-12-31">
+        <message>- Never show the notes that will be released in future</message>
+    </note>
+</releaseNotes>
\ No newline at end of file
diff --git a/library/src/test/java/itmammoth/releaseanimal/ReleaseNoteTest.java b/library/src/test/java/itmammoth/releaseanimal/ReleaseNoteTest.java
new file mode 100644
index 0000000..bf373ad
--- /dev/null
+++ b/library/src/test/java/itmammoth/releaseanimal/ReleaseNoteTest.java
@@ -0,0 +1,13 @@
+package itmammoth.releaseanimal;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class ReleaseNoteTest {
+
+    @Test
+    public void nothingToTest() throws Exception {
+        assertTrue(true);
+    }
+}
\ No newline at end of file
diff --git a/library/src/test/java/itmammoth/releaseanimal/VersionManagerTest.java b/library/src/test/java/itmammoth/releaseanimal/VersionManagerTest.java
new file mode 100644
index 0000000..8d2fc35
--- /dev/null
+++ b/library/src/test/java/itmammoth/releaseanimal/VersionManagerTest.java
@@ -0,0 +1,32 @@
+package itmammoth.releaseanimal;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class VersionManagerTest {
+
+    @Test
+    public void needToShow_withUpdatedVersion() throws Exception {
+        VersionManager versionManager = new VersionManager("1.0.1", "1.0.0");
+        assertTrue(versionManager.needToShow(new VersionName("1.0.1")));
+    }
+
+    @Test
+    public void needToShow_withShownVersion() throws Exception {
+        VersionManager versionManager = new VersionManager("1.0.1", "1.0.1");
+        assertFalse(versionManager.needToShow(new VersionName("1.0.1")));
+    }
+
+    @Test
+    public void versionUpdated_whenCurrentIsNewerThanLastShown() throws Exception {
+        VersionManager versionManager = new VersionManager("1.0.1", "1.0.0");
+        assertTrue(versionManager.versionUpdated());
+    }
+
+    @Test
+    public void versionUpdated_whenCurrentIsTheSameAsLastShown() throws Exception {
+        VersionManager versionManager = new VersionManager("1.0.1", "1.0.1");
+        assertFalse(versionManager.versionUpdated());
+    }
+}
\ No newline at end of file
diff --git a/app/src/test/java/itmammoth/releaseanimal/VersionNameTest.java b/library/src/test/java/itmammoth/releaseanimal/VersionNameTest.java
similarity index 95%
rename from app/src/test/java/itmammoth/releaseanimal/VersionNameTest.java
rename to library/src/test/java/itmammoth/releaseanimal/VersionNameTest.java
index 5fb3935..d1f5eaa 100644
--- a/app/src/test/java/itmammoth/releaseanimal/VersionNameTest.java
+++ b/library/src/test/java/itmammoth/releaseanimal/VersionNameTest.java
@@ -2,9 +2,9 @@
 
 import org.junit.Test;
 
-import itmammoth.releaseanimal.VersionName;
-
-import static org.junit.Assert.*;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
 
 public class VersionNameTest {
 
diff --git a/settings.gradle b/settings.gradle
index e7b4def..462ba77 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1 +1 @@
-include ':app'
+include ':demo', ':library'