下面是使用方法
MediaScannerConnection scannerConnection ；
scannerConnection = new MediaScannerConnection(this, new MediaScannerConnection.MediaScannerConnectionClient() {
@Override
public void onMediaScannerConnected() {
scannerConnection.scanFile(in, "video/mp4");
scannerConnection.disconnect();
}
@Override
public void onScanCompleted(String path, Uri uri) {
}
});
scannerConnection.connect();
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