Support database on external storage

ShoppingList/build.gradle

@@ -11,7 +11,7 @@ android {
 
     defaultConfig {
         applicationId "org.openintents.shopping"
-        versionName "2.2.1"
+        versionName "2.2.1a"
         versionCode 100221
         minSdkVersion 16
         targetSdkVersion rootProject.ext.targetSdkVersion

ShoppingList/src/main/AndroidManifest.xml

@@ -65,6 +65,7 @@
 
     <uses-permission android:name="org.openintents.shopping.READ_PERMISSION" />
     <uses-permission android:name="org.openintents.shopping.WRITE_PERMISSION" />
+    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" />
 
     <application
         android:name=".ShoppingApplication"

ShoppingList/src/main/java/org/openintents/shopping/provider/DatabaseContext.java

@@ -0,0 +1,69 @@
+package org.openintents.shopping.provider;
+
+import android.content.Context;
+import android.content.ContextWrapper;
+import android.content.SharedPreferences;
+import android.database.DatabaseErrorHandler;
+import android.database.sqlite.SQLiteDatabase;
+import android.util.Log;
+import java.io.File;
+import java.io.IOException;
+
+import org.openintents.shopping.ui.PreferenceActivity;
+
+
+public class DatabaseContext extends ContextWrapper {
+    private static String TAG = "DatabaseContext";
+
+    public DatabaseContext(Context context) {
+        super(context);
+    }
+
+    @Override
+    public File getDatabasePath(String name)  {
+        // Parameter name="shopping.db" as passed as DB_NAME to super constructor in ShoppingDatabase constructor
+        SharedPreferences sp = getSharedPreferences(
+                "org.openintents.shopping_preferences", MODE_PRIVATE);
+        final Boolean externalDbUsed = sp.getBoolean(
+                PreferenceActivity.PREFS_EXTERNALDB_USED,
+                PreferenceActivity.PREFS_EXTERNALDB_USED_DEFAULT);
+        final String dirPath = sp.getString(
+                PreferenceActivity.PREFS_EXTERNALDB_PATH,
+                PreferenceActivity.PREFS_EXTERNALDB_PATH_DEFAULT);
+        if (externalDbUsed &&
+                !dirPath.equalsIgnoreCase(PreferenceActivity.PREFS_EXTERNALDB_PATH_DEFAULT)) {
+            String path = null;
+            File parentFile=new File(dirPath);
+            if (!parentFile.exists()){
+                parentFile.mkdirs();
+            }
+            String parentPath=parentFile.getAbsolutePath();
+            if (parentPath.lastIndexOf("\\/")!=-1){
+                path = dirPath + name;
+            } else {
+                path = dirPath + File.separator + name;
+            }
+            File dbFile = new File(path);
+            try {
+                if(!dbFile.exists()){
+                    dbFile.createNewFile();
+                }
+            } catch (IOException e) {
+                Log.e(TAG,"getDatabasePath", e);
+            }
+            return dbFile;
+        } else {
+            return super.getDatabasePath(name);
+        }
+    }
+
+    @Override
+    public SQLiteDatabase openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory) {
+        return SQLiteDatabase.openOrCreateDatabase(getDatabasePath(name), factory);
+    }
+
+    @Override
+    public SQLiteDatabase openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory, DatabaseErrorHandler errorHandler) {
+        return SQLiteDatabase.openOrCreateDatabase(getDatabasePath(name).getAbsolutePath(), factory, errorHandler);
+    }
+}

ShoppingList/src/main/java/org/openintents/shopping/provider/ShoppingDatabase.java

@@ -44,7 +44,7 @@ public class ShoppingDatabase extends SQLiteOpenHelper {
     private static final int DATABASE_VERSION = 13;
 
     ShoppingDatabase(Context context) {
-        super(context, DATABASE_NAME, null, DATABASE_VERSION);
+        super(new DatabaseContext(context), DATABASE_NAME, null, DATABASE_VERSION);
     }
 
     /**