Android手动刷新媒体库的方法

1、扫描sd卡整个目录，效率比较低

public void allScan() { sendBroadcast(new Intent( Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + Environment.getExternalStorageDirectory().getAbsolutePath()))); }

2、扫描某一个目录

public static final String ACTION_MEDIA_SCANNER_SCAN_DIR = "android.intent.action.MEDIA_SCANNER_SCAN_DIR"; public void scanDirAsync(Context ctx, String dir) { Intent scanIntent = new Intent(ACTION_MEDIA_SCANNER_SCAN_DIR); scanIntent.setData(Uri.fromFile(new File(dir))); ctx.sendBroadcast(scanIntent); }

3、扫描某个文件，效率最快

public static void scanFileAsync(Context ctx, String filePath) { Intent scanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE); scanIntent.setData(Uri.fromFile(new File(filePath))); ctx.sendBroadcast(scanIntent); }