Android ContentProvider

1:应用驱动学习

letvRecorder 录制的音频不希望在Music app中显示，Music app 通过查询mediaData 来查找设备中的音频。

通过判断字段 is_music = 0， 而通过

　　　　 ContentValues cv = new ContentValues();
        long current = System.currentTimeMillis();
        long modDate = file.lastModified();
        cv.put(MediaStore.Audio.Media.IS_MUSIC, "0");
        cv.put(MediaStore.Audio.Media.TITLE, entry.getRecordName());
        cv.put(MediaStore.Audio.Media.DATA, file.getAbsolutePath());
        cv.put(MediaStore.Audio.Media.DATE_ADDED, (int) (current / 1000));
        cv.put(MediaStore.Audio.Media.DATE_MODIFIED, (int) (modDate / 1000));
        cv.put(MediaStore.Audio.Media.DURATION, entry.getRecordDuring());
        cv.put(MediaStore.Audio.Media.ARTIST,res.getString(R.string.audio_db_artist_name));
        cv.put(MediaStore.Audio.Media.ALBUM,res.getString(R.string.audio_db_album_name));
//        Log.d(TAG, "Inserting audio record: " + cv.toString());
        ContentResolver resolver = getContentResolver();
        Uri base = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
//        Log.d(TAG, "ContentURI: " + base);

        Uri result = resolver.insert(base, cv);
//只能添加指定的字段信息

        sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE));
//系统获取媒体文件信息，然后保存到mediaData中

　　　　
好的处理方法是：
1：系统扫描，添加信息到mediaData
2: 回调方法作后续的处理
//-->>>method 2
        MediaScannerConnection.scanFile(context,new String[]{newFile.getAbsolutePath()},null,new MediaScannerConnection.OnScanCompletedListener(){
            @Override
            public void onScanCompleted(String path, Uri uri) {
                if (uri!=null){
                    ContentValues cv = new ContentValues();
                    cv.put(MediaStore.Audio.Media.IS_MUSIC, "0");
                    context.getContentResolver().update(uri, cv, "is_music = ?", new String[]{"1"});
                }
            }
        });
        //<<<--method 2