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      1 /*
      2  * Copyright (C) 2008 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.music;
     18 
     19 import android.app.Activity;
     20 import android.database.Cursor;
     21 import android.media.AudioManager;
     22 import android.os.Bundle;
     23 import android.os.Environment;
     24 import android.os.Handler;
     25 import android.os.Message;
     26 import android.provider.MediaStore;
     27 import android.view.Window;
     28 import android.view.WindowManager;
     29 
     30 public class ScanningProgress extends Activity
     31 {
     32     private final static int CHECK = 0;
     33     private Handler mHandler = new Handler() {
     34         @Override
     35         public void handleMessage(Message msg)
     36         {
     37             if (msg.what == CHECK) {
     38                 String status = Environment.getExternalStorageState();
     39                 if (!status.equals(Environment.MEDIA_MOUNTED)) {
     40                     // If the card suddenly got unmounted again, there's
     41                     // really no need to keep waiting for the media scanner.
     42                     finish();
     43                     return;
     44                 }
     45                 Cursor c = MusicUtils.query(ScanningProgress.this,
     46                         MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI,
     47                         null, null, null, null);
     48                 if (c != null) {
     49                     // The external media database is now ready for querying
     50                     // (though it may still be in the process of being filled).
     51                     c.close();
     52                     setResult(RESULT_OK);
     53                     finish();
     54                     return;
     55                 }
     56                 Message next = obtainMessage(CHECK);
     57                 sendMessageDelayed(next, 3000);
     58             }
     59         }
     60     };
     61 
     62     @Override
     63     public void onCreate(Bundle icicle) {
     64         super.onCreate(icicle);
     65         setVolumeControlStream(AudioManager.STREAM_MUSIC);
     66 
     67         requestWindowFeature(Window.FEATURE_NO_TITLE);
     68         setContentView(R.layout.scanning);
     69         getWindow().setLayout(WindowManager.LayoutParams.WRAP_CONTENT,
     70                                     WindowManager.LayoutParams.WRAP_CONTENT);
     71         setResult(RESULT_CANCELED);
     72 
     73         Message msg = mHandler.obtainMessage(CHECK);
     74         mHandler.sendMessageDelayed(msg, 1000);
     75     }
     76 
     77     @Override
     78     public void onDestroy() {
     79         mHandler.removeMessages(CHECK);
     80         super.onDestroy();
     81     }
     82 }
     83