put disk access into background thread?

src/com/github/andlyticsproject/AppInfoActivity.java

@@ -45,6 +45,7 @@ public class AppInfoActivity extends SherlockFragmentActivity implements
 	private LinksListAdapter linksListAdapter;
 
 	private LoadLinksDb loadLinksDb;
+	private LoadBitmap loadBitmap;
 
 	private AppInfo appInfo;
 	private List<Link> links;
@@ -78,9 +79,16 @@ public void onCreate(Bundle savedInstanceState) {
 		}
 
 		if (iconFilePath != null) {
-			Bitmap bm = BitmapFactory.decodeFile(iconFilePath);
-			BitmapDrawable icon = new BitmapDrawable(getResources(), bm);
-			getSupportActionBar().setIcon(icon);
+			if (getLastCustomNonConfigurationInstance() != null) {
+				loadBitmap = (LoadBitmap) getLastCustomNonConfigurationInstance();
+				loadBitmap.attach(this);
+				if (loadBitmap.bitmap != null) {
+					setSupportActionBarIcon(loadBitmap.bitmap);
+				}
+			} else {
+				loadBitmap = new LoadBitmap(this);
+				Utils.execute(loadBitmap, iconFilePath);
+			}
 		}
 
 		LayoutInflater layoutInflater = getLayoutInflater();
@@ -258,6 +266,39 @@ protected void onPostExecute(Void result) {
 		}
 
 	}
+
+	private static class LoadBitmap extends DetachableAsyncTask<String, Void, Bitmap, AppInfoActivity> {
+
+		Bitmap bitmap;
+
+		LoadBitmap(AppInfoActivity activity) {
+			super(activity);
+		}
+
+		@Override
+		protected Bitmap doInBackground(String... params) {
+			if (activity == null) {
+				return null;
+			}
+			Bitmap bm = BitmapFactory.decodeFile(params[0]);
+			bitmap = bm;
+			return bm;
+		}
+
+		@Override
+		protected void onPostExecute(Bitmap bm) {
+			if (activity == null) {
+				return;
+			}
+
+			activity.setSupportActionBarIcon(bm);
+		}
+	}
+
+	private void setSupportActionBarIcon(Bitmap bm) {
+		BitmapDrawable icon = new BitmapDrawable(getResources(), bm);
+		getSupportActionBar().setIcon(icon);
+	}
 
 	private void getLinksFromDb() {
 		appInfo = db.findAppByPackageName(packageName);

src/com/github/andlyticsproject/DetailsActivity.java

@@ -45,6 +45,8 @@ public class DetailsActivity extends BaseActivity implements DetailedStatsActivi
 
 	private String appName;
 	private boolean hasRevenue;
+
+	private LoadBitmap loadBitmap;
 
 	public static class TabListener<T extends StatsView<?>> implements ActionBar.TabListener {
 
@@ -98,9 +100,16 @@ protected void onCreate(Bundle savedInstanceState) {
 		ActionBar actionBar = getSupportActionBar();
 
 		if (iconFilePath != null) {
-			Bitmap bm = BitmapFactory.decodeFile(iconFilePath);
-			BitmapDrawable icon = new BitmapDrawable(getResources(), bm);
-			actionBar.setIcon(icon);
+			if (getLastCustomNonConfigurationInstance() != null) {
+				loadBitmap = (LoadBitmap) getLastCustomNonConfigurationInstance();
+				loadBitmap.attach(this);
+				if (loadBitmap.bitmap != null) {
+					setSupportActionBarIcon(loadBitmap.bitmap);
+				}
+			} else {
+				loadBitmap = new LoadBitmap(this);
+				Utils.execute(loadBitmap, iconFilePath);
+			}
 		}
 
 		actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
@@ -305,5 +314,39 @@ protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 			}
 		}
 	}
+
+	private static class LoadBitmap extends DetachableAsyncTask<String, Void, Bitmap, DetailsActivity> {
+
+		Bitmap bitmap;
+
+		LoadBitmap(DetailsActivity activity) {
+			super(activity);
+		}
+
+		@Override
+		protected Bitmap doInBackground(String... params) {
+			if (activity == null) {
+				return null;
+			}
+
+			Bitmap bm = BitmapFactory.decodeFile(params[0]);
+			bitmap = bm;
+			return bm;
+		}
+
+		@Override
+		protected void onPostExecute(Bitmap bm) {
+			if (activity == null) {
+				return;
+			}
+
+			activity.setSupportActionBarIcon(bm);
+		}
+	}
+
+	private void setSupportActionBarIcon(Bitmap bm) {
+		BitmapDrawable icon = new BitmapDrawable(getResources(), bm);
+		getSupportActionBar().setIcon(icon);
+	}
 
 }