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);
}