Merge "Recover when widget preview database is deleted" into jb-ub-now-kermit

src/com/android/launcher3/LauncherAppState.java

@@ -84,7 +84,7 @@ public class LauncherAppState implements DeviceProfile.DeviceProfileCallbacks {
         mIsScreenLarge = isScreenLarge(sContext.getResources());
         mScreenDensity = sContext.getResources().getDisplayMetrics().density;
 
-        mWidgetPreviewCacheDb = new WidgetPreviewLoader.CacheDb(sContext);
+        recreateWidgetPreviewDb();
         mIconCache = new IconCache(sContext);
 
         mAppFilter = AppFilter.loadByName(sContext.getString(R.string.app_filter_class));
@@ -115,6 +115,13 @@ public class LauncherAppState implements DeviceProfile.DeviceProfileCallbacks {
         resolver.registerContentObserver(LauncherSettings.Favorites.CONTENT_URI, true,
                 mFavoritesObserver);
     }
+    
+    public void recreateWidgetPreviewDb() {
+        if (mWidgetPreviewCacheDb != null) {
+            mWidgetPreviewCacheDb.close();
+        }
+        mWidgetPreviewCacheDb = new WidgetPreviewLoader.CacheDb(sContext);
+    }
 
     /**
      * Call from Application.onTerminate(), which is not guaranteed to ever be called.

src/com/android/launcher3/WidgetPreviewLoader.java

@@ -10,6 +10,7 @@ import android.content.pm.ResolveInfo;
 import android.content.res.Resources;
 import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteDiskIOException;
 import android.database.sqlite.SQLiteOpenHelper;
 import android.graphics.Bitmap;
 import android.graphics.Bitmap.Config;
@@ -164,6 +165,12 @@ public class WidgetPreviewLoader {
             editor.commit();
         }
     }
+    
+    public void recreateDb() {
+        LauncherAppState app = LauncherAppState.getInstance();
+        app.recreateWidgetPreviewDb();
+        mDb = app.getWidgetPreviewCacheDb();
+    }
 
     public void setPreviewSize(int previewWidth, int previewHeight,
             PagedViewCellLayout widgetSpacingLayout) {
@@ -347,13 +354,20 @@ public class WidgetPreviewLoader {
         preview.compress(Bitmap.CompressFormat.PNG, 100, stream);
         values.put(CacheDb.COLUMN_PREVIEW_BITMAP, stream.toByteArray());
         values.put(CacheDb.COLUMN_SIZE, mSize);
-        db.insert(CacheDb.TABLE_NAME, null, values);
+        try {
+            db.insert(CacheDb.TABLE_NAME, null, values);
+        } catch (SQLiteDiskIOException e) {
+            recreateDb();
+        }
     }
 
     private void clearDb() {
         SQLiteDatabase db = mDb.getWritableDatabase();
         // Delete everything
-        db.delete(CacheDb.TABLE_NAME, null, null);
+        try {
+            db.delete(CacheDb.TABLE_NAME, null, null);
+        } catch (SQLiteDiskIOException e) {
+        }
     }
 
     public static void removePackageFromDb(final CacheDb cacheDb, final String packageName) {
@@ -363,13 +377,17 @@ public class WidgetPreviewLoader {
         new AsyncTask<Void, Void, Void>() {
             public Void doInBackground(Void ... args) {
                 SQLiteDatabase db = cacheDb.getWritableDatabase();
-                db.delete(CacheDb.TABLE_NAME,
-                        CacheDb.COLUMN_NAME + " LIKE ? OR " +
-                        CacheDb.COLUMN_NAME + " LIKE ?", // SELECT query
-                        new String[] {
-                            WIDGET_PREFIX + packageName + "/%",
-                            SHORTCUT_PREFIX + packageName + "/%"} // args to SELECT query
-                            );
+                try {
+                    db.delete(CacheDb.TABLE_NAME,
+                            CacheDb.COLUMN_NAME + " LIKE ? OR " +
+                            CacheDb.COLUMN_NAME + " LIKE ?", // SELECT query
+                            new String[] {
+                                    WIDGET_PREFIX + packageName + "/%",
+                                    SHORTCUT_PREFIX + packageName + "/%"
+                            } // args to SELECT query
+                    );
+                } catch (SQLiteDiskIOException e) {
+                }
                 synchronized(sInvalidPackages) {
                     sInvalidPackages.remove(packageName);
                 }
@@ -382,9 +400,12 @@ public class WidgetPreviewLoader {
         new AsyncTask<Void, Void, Void>() {
             public Void doInBackground(Void ... args) {
                 SQLiteDatabase db = cacheDb.getWritableDatabase();
-                db.delete(CacheDb.TABLE_NAME,
-                        CacheDb.COLUMN_NAME + " = ? ", // SELECT query
-                        new String[] { objectName }); // args to SELECT query
+                try {
+                    db.delete(CacheDb.TABLE_NAME,
+                            CacheDb.COLUMN_NAME + " = ? ", // SELECT query
+                            new String[] { objectName }); // args to SELECT query
+                } catch (SQLiteDiskIOException e) {
+                }
                 return null;
             }
         }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null);
@@ -396,14 +417,20 @@ public class WidgetPreviewLoader {
                     CacheDb.COLUMN_SIZE + " = ?";
         }
         SQLiteDatabase db = mDb.getReadableDatabase();
-        Cursor result = db.query(CacheDb.TABLE_NAME,
-                new String[] { CacheDb.COLUMN_PREVIEW_BITMAP }, // cols to return
-                mCachedSelectQuery, // select query
-                new String[] { name, mSize }, // args to select query
-                null,
-                null,
-                null,
-                null);
+        Cursor result;
+        try {
+            result = db.query(CacheDb.TABLE_NAME,
+                    new String[] { CacheDb.COLUMN_PREVIEW_BITMAP }, // cols to return
+                    mCachedSelectQuery, // select query
+                    new String[] { name, mSize }, // args to select query
+                    null,
+                    null,
+                    null,
+                    null);
+        } catch (SQLiteDiskIOException e) {
+            recreateDb();
+            return null;
+        }
         if (result.getCount() > 0) {
             result.moveToFirst();
             byte[] blob = result.getBlob(0);