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      1 /*
      2  * Copyright (C) 2009 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.gallery3d.gadget;
     18 
     19 import android.annotation.TargetApi;
     20 import android.app.Activity;
     21 import android.content.Intent;
     22 import android.content.res.AssetFileDescriptor;
     23 import android.net.Uri;
     24 import android.os.Build;
     25 import android.os.Bundle;
     26 import android.util.Log;
     27 import android.widget.Toast;
     28 
     29 import com.android.gallery3d.R;
     30 import com.android.gallery3d.app.GalleryActivity;
     31 import com.android.gallery3d.app.PhotoPage;
     32 import com.android.gallery3d.common.ApiHelper;
     33 
     34 public class WidgetClickHandler extends Activity {
     35     private static final String TAG = "PhotoAppWidgetClickHandler";
     36 
     37     private boolean isValidDataUri(Uri dataUri) {
     38         if (dataUri == null) return false;
     39         try {
     40             AssetFileDescriptor f = getContentResolver()
     41                     .openAssetFileDescriptor(dataUri, "r");
     42             f.close();
     43             return true;
     44         } catch (Throwable e) {
     45             Log.w(TAG, "cannot open uri: " + dataUri, e);
     46             return false;
     47         }
     48     }
     49 
     50     @Override
     51     @TargetApi(ApiHelper.VERSION_CODES.HONEYCOMB)
     52     protected void onCreate(Bundle savedState) {
     53         super.onCreate(savedState);
     54         // The behavior is changed in JB, refer to b/6384492 for more details
     55         boolean tediousBack = Build.VERSION.SDK_INT >= ApiHelper.VERSION_CODES.JELLY_BEAN;
     56         Uri uri = getIntent().getData();
     57         Intent intent;
     58         if (isValidDataUri(uri)) {
     59             intent = new Intent(Intent.ACTION_VIEW, uri);
     60             if (tediousBack) {
     61                 intent.putExtra(PhotoPage.KEY_TREAT_BACK_AS_UP, true);
     62             }
     63         } else {
     64             Toast.makeText(this,
     65                     R.string.no_such_item, Toast.LENGTH_LONG).show();
     66             intent = new Intent(this, GalleryActivity.class);
     67         }
     68         if (tediousBack) {
     69             intent.setFlags(
     70                     Intent.FLAG_ACTIVITY_NEW_TASK |
     71                     Intent.FLAG_ACTIVITY_CLEAR_TASK |
     72                     Intent.FLAG_ACTIVITY_TASK_ON_HOME);
     73         }
     74         startActivity(intent);
     75         finish();
     76     }
     77 }
     78