在android中将第一帧视频作为缩略图？

import android.media.MediaMetadataRetriever;
import android.graphics.Bitmap;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {
    private ImageView thumbnailImageView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        thumbnailImageView = findViewById(R.id.thumbnailImageView);

        String videoPath = "path_to_your_video_file"; // 替换为视频文件的路径

        Bitmap thumbnail = getVideoThumbnail(videoPath);
        if (thumbnail != null) {
            thumbnailImageView.setImageBitmap(thumbnail);
        }
    }

    private Bitmap getVideoThumbnail(String videoPath) {
        MediaMetadataRetriever retriever = new MediaMetadataRetriever();
        retriever.setDataSource(videoPath);

        Bitmap thumbnail = retriever.getFrameAtTime(0);
        retriever.release();

        return thumbnail;
    }
}