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
onCreate(Bundle icicle)63     public void onCreate(Bundle icicle) {
64         super.onCreate(icicle);
65         setVolumeControlStream(AudioManager.STREAM_MUSIC);
66 
67         requestWindowFeature(Window.FEATURE_NO_TITLE);
68         if (android.os.Environment.isExternalStorageRemovable()) {
69             setContentView(R.layout.scanning);
70         } else {
71             setContentView(R.layout.scanning_nosdcard);
72         }
73         getWindow().setLayout(WindowManager.LayoutParams.WRAP_CONTENT,
74                                     WindowManager.LayoutParams.WRAP_CONTENT);
75         setResult(RESULT_CANCELED);
76 
77         Message msg = mHandler.obtainMessage(CHECK);
78         mHandler.sendMessageDelayed(msg, 1000);
79     }
80 
81     @Override
onDestroy()82     public void onDestroy() {
83         mHandler.removeMessages(CHECK);
84         super.onDestroy();
85     }
86 }
87