我想在一秒钟内显示约30张照片,因此它们将像视频一样显示。

我在while(TRUE)循环中使用了Android ImageView,但是ImageView没有按我的预期进行更改。

ImageView大约每秒更改图片一次,所以想知道是否还有另一种方法

显示我的照片?

照片是使用Udp从相机传输的,我首先需要将其存储在缓冲区中,然后

比显示。

以上部分会导致ImageView延迟。

部分代码是这样的

  public void receiveVideoRawData() throws IOException{
        socket_video = new DatagramSocket();
        byte[] buf_rcv = new byte[153600];
        DatagramPacket rawData = new DatagramPacket(buf_rcv, buf_rcv.length);
        Bitmap  image = null;
        socket_video.receive(rawData);//receive a raw data
        image = readMyRawData.readUINT_RGBImage(buf_rcv);//decode the raw data
        ByteArrayOutputStream blob = new ByteArrayOutputStream();
        Bitmap pBitmap = image ;
        pBitmap.compress(Bitmap.CompressFormat.JPEG, 1, blob);
        byte[] bitmapdata = blob.toByteArray();
        ardrone_Frame = BitmapFactory.decodeByteArray(bitmapdata , 0, bitmapdata.length);
      }


显示部分

  Thread thread=new Thread  (new Runnable() {
     Message message;
    String obj="run";
    int i;
    long start;
    @Override
    public void run() {
        // TODO Auto-generated method stub
         Log.e("///enter thread ","THREAD");
    while(true){
        try {
            Log.e("enter_video_thread","enter_video_thread");
            receiveVideoRawData();
            Log.e("///receiveVideoRawData ","receiveVideoRawData");
            message = handler.obtainMessage(1,obj);
                    handler.sendMessage(message);
            }

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

});
public Handler handler = new Handler(){
    @Override
    public void handleMessage(Message msg) {
            super.handleMessage(msg);
            String MsgString = (String)msg.obj;
            if (MsgString.equals("run"))
            {         Log.e("///enter handler ","HANDLER");
                          Toast.makeText(ArDroneMain.this,"save image ",Toast.LENGTH_SHORT).show();
                          //Bitmap bitmap = BitmapFactory.decodeFile(Environment.getExternalStorageDirectory()+ "/ArdroneVideo.jpg");
                          myImageView.setImageBitmap(ardrone_Frame);    ///Show the image
                          Toast.makeText(ArDroneMain.this,"show image",Toast.LENGTH_SHORT).show();
             }

    }
};

最佳答案

您可以将其制作为动画来完成。
为动画制作图像,并以png格式保存在文件夹中。
使用以下代码对这些图像进行动画处理

<animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="true">
 <item android:drawable="@drawable/rocket_thrust1" android:duration="200" />
 <item android:drawable="@drawable/rocket_thrust2" android:duration="200" />
 <item android:drawable="@drawable/rocket_thrust3" android:duration="200" />
 </animation-list>


然后

AnimationDrawable rocketAnimation;

public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);

  ImageView rocketImage = (ImageView) findViewById(R.id.rocket_image);
  rocketImage.setBackgroundResource(R.drawable.rocket_thrust);
  rocketAnimation = (AnimationDrawable) rocketImage.getBackground();
}

public boolean onTouchEvent(MotionEvent event) {
  if (event.getAction() == MotionEvent.ACTION_DOWN) {
    rocketAnimation.start();
    return true;
  }
  return super.onTouchEvent(event);
}

07-24 09:47
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