Create WelcomeActivity

app/src/main/AndroidManifest.xml

@@ -18,6 +18,10 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+        <activity
+            android:name=".onboarding.WelcomeActivity"
+            android:excludeFromRecents="true"
+            android:noHistory="true"/>
         <activity
             android:name=".main.MainActivity"
             android:label="@string/app_name"/>

app/src/main/java/guru/stefma/timetracking/onboarding/CreateUserHandler.java

@@ -70,7 +70,7 @@ public void onResponse(Call<UserResult> call, Response<UserResult> response) {
                         dialog.dismiss();
                     } else if (Objects.equals(userResult.getResult(), UserResult.RESULT_OK)) {
                         SettingsManager.saveUserToken(context, userResult.getToken());
-                        context.startActivity(MainActivity.newInstance(context));
+                        context.startActivity(WelcomeActivity.newInstance(context, userResult));
                         dialog.dismiss();
                     }
                 } else {

app/src/main/java/guru/stefma/timetracking/onboarding/Welcome.java

@@ -0,0 +1,36 @@
+package guru.stefma.timetracking.onboarding;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.view.View;
+
+import guru.stefma.timetracking.main.MainActivity;
+
+public class Welcome {
+
+    public static final String KEY_USER_TOKEN = "KEY_USER_TOKEN";
+
+    public static final String KEY_USERNAME = "KEY_USERNAME";
+
+    private final Context mContext;
+
+    private final Bundle mExtras;
+
+    public Welcome(Context context, Bundle extras) {
+        mContext = context;
+        mExtras = extras;
+    }
+
+    public String getUsername() {
+        return mExtras.getString(KEY_USERNAME);
+    }
+
+    public String getToken() {
+        return mExtras.getString(KEY_USER_TOKEN);
+    }
+
+    public void onOkClicked(View view) {
+        mContext.startActivity(MainActivity.newInstance(mContext));
+    }
+
+}

app/src/main/java/guru/stefma/timetracking/onboarding/WelcomeActivity.java

@@ -0,0 +1,30 @@
+package guru.stefma.timetracking.onboarding;
+
+import android.content.Context;
+import android.content.Intent;
+import android.databinding.DataBindingUtil;
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
+
+import guru.stefma.restapi.objects.user.UserResult;
+import guru.stefma.timetracking.R;
+import guru.stefma.timetracking.databinding.ActivityWelcomeBinding;
+
+public class WelcomeActivity extends AppCompatActivity {
+
+    public static Intent newInstance(Context context, UserResult token) {
+        Intent intent = new Intent(context, WelcomeActivity.class);
+        intent.putExtra(Welcome.KEY_USER_TOKEN, token.getToken());
+        intent.putExtra(Welcome.KEY_USERNAME, token.getUsername());
+        return intent;
+    }
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        ActivityWelcomeBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_welcome);
+        binding.setWelcome(new Welcome(this, getIntent().getExtras()));
+    }
+
+}

app/src/main/res/layout/activity_welcome.xml

@@ -0,0 +1,83 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        xmlns:tools="http://schemas.android.com/tools">
+
+    <data>
+
+        <variable
+            name="welcome"
+            type="guru.stefma.timetracking.onboarding.Welcome"/>
+    </data>
+
+    <RelativeLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <View
+            android:layout_width="match_parent"
+            android:layout_height="188dp"
+            android:background="@color/colorPrimaryDark"/>
+
+        <TextView
+            android:id="@+id/welcome"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="@dimen/monster"
+            android:layout_marginTop="@dimen/big"
+            android:text="@string/welcome"
+            android:textAppearance="@style/TextAppearance.AppCompat.Display2"/>
+
+        <TextView
+            android:id="@+id/token"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_below="@id/welcome"
+            android:layout_marginEnd="@dimen/monster"
+            android:layout_marginStart="@dimen/monster"
+            android:text="@{welcome.token}"
+            android:textAppearance="@style/TextAppearance.AppCompat.Body1"
+            android:textIsSelectable="true"
+            tools:text="12891280192918289129"/>
+
+        <android.support.v7.widget.CardView
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_below="@id/token"
+            android:layout_centerHorizontal="true"
+            android:layout_marginBottom="@dimen/monster"
+            android:layout_marginEnd="@dimen/monster"
+            android:layout_marginStart="@dimen/monster"
+            android:layout_marginTop="@dimen/normal"
+            android:elevation="@dimen/cardview_default_elevation"
+            app:cardBackgroundColor="@color/cardview_dark_background"
+            app:cardCornerRadius="@dimen/cardview_default_radius">
+
+            <ScrollView
+                android:layout_width="match_parent"
+                android:layout_height="match_parent">
+
+                <TextView
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="@dimen/small"
+                    android:text="@{@string/introducing(welcome.username)}"
+                    tools:text="@string/introducing"/>
+            </ScrollView>
+
+        </android.support.v7.widget.CardView>
+
+        <Button
+            style="@style/Widget.AppCompat.Button.Borderless.Colored"
+            android:layout_width="match_parent"
+            android:layout_height="@dimen/monster"
+            android:layout_alignParentBottom="true"
+            android:elevation="4dp"
+            android:gravity="end|center_vertical"
+            android:onClick="@{welcome.onOkClicked}"
+            android:paddingEnd="@dimen/big"
+            android:paddingStart="@dimen/big"
+            android:text="@string/ok"/>
+
+    </RelativeLayout>
+</layout>

app/src/main/res/values/dimens.xml

@@ -7,5 +7,7 @@
     <dimen name="small">8dp</dimen>
     <dimen name="tiny">4dp</dimen>
     <dimen name="normal">16dp</dimen>
+    <dimen name="big">32dp</dimen>
+    <dimen name="monster">48dp</dimen>
     <dimen name="tile_size">48dp</dimen>
 </resources>

app/src/main/res/values/strings.xml

@@ -33,4 +33,7 @@
     <string name="have_account">Already have a Account?</string>
     <string name="token">Token</string>
     <string name="login">Login</string>
+    <string name="introducing">Hello %1$s,\n\nThis is your user token. It\'s very important to save it on a safe place. \n\n<b>Caution: </b>This is your \"password\" too. If you want to login on a other device you can use this token.</string>
+    <string name="welcome">Welcome</string>
+    <string name="ok">OK</string>
 </resources>