Update Wallpaper picker and fix bug
-Fixed b/3271838
-On a phone, Fragment would not remember its
previous state and crash on rotation
Change-Id: Ida923fba0c7f4622b090e2838fd932328ad68c63
diff --git a/src/com/android/launcher2/WallpaperChooserDialogFragment.java b/src/com/android/launcher2/WallpaperChooserDialogFragment.java
new file mode 100644
index 0000000..10bfc56
--- /dev/null
+++ b/src/com/android/launcher2/WallpaperChooserDialogFragment.java
@@ -0,0 +1,321 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher2;
+
+import com.android.launcher.R;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.app.DialogFragment;
+import android.app.WallpaperManager;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.drawable.Drawable;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.BaseAdapter;
+import android.widget.Gallery;
+import android.widget.GridView;
+import android.widget.ImageView;
+import android.widget.ListAdapter;
+import android.widget.SpinnerAdapter;
+
+import java.io.IOException;
+import java.util.ArrayList;
+
+public class WallpaperChooserDialogFragment extends DialogFragment implements
+ AdapterView.OnItemSelectedListener, AdapterView.OnItemClickListener {
+
+ private static final String TAG = "Launcher.WallpaperChooserDialogFragment";
+ private static final String EMBEDDED_KEY = "com.android.launcher2."
+ + "WallpaperChooserDialogFragment.EMBEDDED_KEY";
+
+ private boolean mEmbedded;
+ private ImageView mImageView = null;
+ private Bitmap mBitmap = null;
+
+ private ArrayList<Integer> mThumbs;
+ private ArrayList<Integer> mImages;
+ private WallpaperLoader mLoader;
+
+ public static WallpaperChooserDialogFragment newInstance() {
+ WallpaperChooserDialogFragment fragment = new WallpaperChooserDialogFragment();
+ fragment.setCancelable(true);
+ return fragment;
+ }
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ if (savedInstanceState != null && savedInstanceState.containsKey(EMBEDDED_KEY)) {
+ mEmbedded = savedInstanceState.getBoolean(EMBEDDED_KEY);
+ } else {
+ mEmbedded = isInLayout();
+ }
+ }
+
+ @Override
+ public void onSaveInstanceState(Bundle outState) {
+ outState.putBoolean(EMBEDDED_KEY, mEmbedded);
+ }
+
+ @Override
+ public void onDestroy() {
+ super.onDestroy();
+
+ if (mLoader != null && mLoader.getStatus() != WallpaperLoader.Status.FINISHED) {
+ mLoader.cancel(true);
+ mLoader = null;
+ }
+ }
+
+ @Override
+ public void onDismiss(DialogInterface dialog) {
+ super.onDismiss(dialog);
+ /* On orientation changes, the dialog is effectively "dismissed" so this is called
+ * when the activity is no longer associated with this dying dialog fragment. We
+ * should just safely ignore this case by checking if getActivity() returns null
+ */
+ Activity activity = getActivity();
+ if (activity != null) {
+ activity.finish();
+ }
+ }
+
+ /* This will only be called when in XLarge mode, since this Fragment is invoked like
+ * a dialog in that mode
+ */
+ @Override
+ public Dialog onCreateDialog(Bundle savedInstanceState) {
+ final View v = getActivity().getLayoutInflater().inflate(
+ R.layout.wallpaper_chooser, null, false);
+
+ GridView gridView = (GridView) v.findViewById(R.id.gallery);
+ gridView.setOnItemClickListener(this);
+ gridView.setAdapter(new ImageAdapter(getActivity()));
+
+ final int viewInset =
+ getResources().getDimensionPixelSize(R.dimen.alert_dialog_content_inset);
+
+ AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+ builder.setNegativeButton(R.string.wallpaper_cancel, null);
+ builder.setTitle(R.string.wallpaper_dialog_title);
+ builder.setView(gridView, viewInset, viewInset, viewInset, viewInset);
+ return builder.create();
+ }
+
+ @Override
+ public View onCreateView(LayoutInflater inflater, ViewGroup container,
+ Bundle savedInstanceState) {
+ findWallpapers();
+
+ /* If this fragment is embedded in the layout of this activity, then we should
+ * generate a view to display. Otherwise, a dialog will be created in
+ * onCreateDialog()
+ */
+ if (mEmbedded) {
+ View view = inflater.inflate(R.layout.wallpaper_chooser, container, false);
+
+ final Gallery gallery = (Gallery) view.findViewById(R.id.gallery);
+ gallery.setCallbackDuringFling(false);
+ gallery.setOnItemSelectedListener(this);
+ gallery.setAdapter(new ImageAdapter(getActivity()));
+
+ View setButton = view.findViewById(R.id.set);
+ setButton.setOnClickListener(new OnClickListener() {
+ @Override
+ public void onClick(View v) {
+ selectWallpaper(gallery.getSelectedItemPosition());
+ }
+ });
+ mImageView = (ImageView) view.findViewById(R.id.wallpaper);
+ return view;
+ }
+ return null;
+ }
+
+ private void selectWallpaper(int position) {
+ try {
+ WallpaperManager wpm = (WallpaperManager) getActivity().getSystemService(
+ Context.WALLPAPER_SERVICE);
+ wpm.setResource(mImages.get(position));
+ Activity activity = getActivity();
+ activity.setResult(Activity.RESULT_OK);
+ activity.finish();
+ } catch (IOException e) {
+ Log.e(TAG, "Failed to set wallpaper: " + e);
+ }
+ }
+
+ // Click handler for the Dialog's GridView
+ @Override
+ public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+ selectWallpaper(position);
+ }
+
+ // Selection handler for the embedded Gallery view
+ @Override
+ public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+ if (mLoader != null && mLoader.getStatus() != WallpaperLoader.Status.FINISHED) {
+ mLoader.cancel();
+ }
+ mLoader = (WallpaperLoader) new WallpaperLoader().execute(position);
+ }
+
+ @Override
+ public void onNothingSelected(AdapterView<?> parent) {
+ }
+
+ private void findWallpapers() {
+ mThumbs = new ArrayList<Integer>(24);
+ mImages = new ArrayList<Integer>(24);
+
+ final Resources resources = getResources();
+ // Context.getPackageName() may return the "original" package name,
+ // com.android.launcher2; Resources needs the real package name,
+ // com.android.launcher. So we ask Resources for what it thinks the
+ // package name should be.
+ final String packageName = resources.getResourcePackageName(R.array.wallpapers);
+
+ addWallpapers(resources, packageName, R.array.wallpapers);
+ addWallpapers(resources, packageName, R.array.extra_wallpapers);
+ }
+
+ private void addWallpapers(Resources resources, String packageName, int list) {
+ final String[] extras = resources.getStringArray(list);
+ for (String extra : extras) {
+ int res = resources.getIdentifier(extra, "drawable", packageName);
+ if (res != 0) {
+ final int thumbRes = resources.getIdentifier(extra + "_small",
+ "drawable", packageName);
+
+ if (thumbRes != 0) {
+ mThumbs.add(thumbRes);
+ mImages.add(res);
+ // Log.d(TAG, "add: [" + packageName + "]: " + extra + " (" + res + ")");
+ }
+ }
+ }
+ }
+
+ private class ImageAdapter extends BaseAdapter implements ListAdapter, SpinnerAdapter {
+ private LayoutInflater mLayoutInflater;
+
+ ImageAdapter(Activity activity) {
+ mLayoutInflater = activity.getLayoutInflater();
+ }
+
+ public int getCount() {
+ return mThumbs.size();
+ }
+
+ public Object getItem(int position) {
+ return position;
+ }
+
+ public long getItemId(int position) {
+ return position;
+ }
+
+ public View getView(int position, View convertView, ViewGroup parent) {
+ ImageView image;
+
+ if (convertView == null) {
+ image = (ImageView) mLayoutInflater.inflate(R.layout.wallpaper_item, parent, false);
+ } else {
+ image = (ImageView) convertView;
+ }
+
+ int thumbRes = mThumbs.get(position);
+ image.setImageResource(thumbRes);
+ Drawable thumbDrawable = image.getDrawable();
+ if (thumbDrawable != null) {
+ thumbDrawable.setDither(true);
+ } else {
+ Log.e(TAG, "Error decoding thumbnail resId=" + thumbRes + " for wallpaper #"
+ + position);
+ }
+
+ return image;
+ }
+ }
+
+ class WallpaperLoader extends AsyncTask<Integer, Void, Bitmap> {
+ BitmapFactory.Options mOptions;
+
+ WallpaperLoader() {
+ mOptions = new BitmapFactory.Options();
+ mOptions.inDither = false;
+ mOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;
+ }
+
+ @Override
+ protected Bitmap doInBackground(Integer... params) {
+ if (isCancelled()) return null;
+ try {
+ return BitmapFactory.decodeResource(getResources(),
+ mImages.get(params[0]), mOptions);
+ } catch (OutOfMemoryError e) {
+ return null;
+ }
+ }
+
+ @Override
+ protected void onPostExecute(Bitmap b) {
+ if (b == null) return;
+
+ if (!isCancelled() && !mOptions.mCancel) {
+ // Help the GC
+ if (mBitmap != null) {
+ mBitmap.recycle();
+ }
+
+ // This should always be the case, but check anyways
+ final ImageView view = mImageView;
+ if (view != null) {
+ view.setImageBitmap(b);
+
+ mBitmap = b;
+
+ final Drawable drawable = view.getDrawable();
+ drawable.setFilterBitmap(true);
+ drawable.setDither(true);
+
+ view.postInvalidate();
+ }
+
+ mLoader = null;
+ } else {
+ b.recycle();
+ }
+ }
+
+ void cancel() {
+ mOptions.requestCancelDecode();
+ super.cancel(true);
+ }
+ }
+}
\ No newline at end of file