ScanningProgress.java revision ecf5b6577ed52056fa8ae6035805bfed9f50c2f3 
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
17package com.android.music;
18
19import android.app.Activity;
20import android.database.Cursor;
21import android.media.AudioManager;
22import android.os.Bundle;
23import android.os.Environment;
24import android.os.Handler;
25import android.os.Message;
26import android.provider.MediaStore;
27import android.view.Window;
28import android.view.WindowManager;
29
30public 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        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
82    public void onDestroy() {
83        mHandler.removeMessages(CHECK);
84        super.onDestroy();
85    }
86}
87