Скачать или смотреть Android et surfaceview avec un thread 3/3

Cest un simple tutoriel qui montre comment utilisé surfaceview avec un thread en java pour android 2.1 et éclipse.
example code:import android.content.Context;
import android.graphics.Canvas;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class MySurfaceView extends SurfaceView implements SurfaceHolder.Callback {
private SurfaceHolder holder;
private MySurfaceViewThread mySurfaceViewThread;
private boolean hasSurface;
MySurfaceView(Context context) {
super(context);
init();
}
private void init() {
// Create a new SurfaceHolder and assign this class as its callback.
holder = getHolder();
holder.addCallback(this);
hasSurface = false;
}
public void resume() {
// Create and start the graphics update thread.
if (mySurfaceViewThread == null) {
mySurfaceViewThread = new MySurfaceViewThread();
if (hasSurface == true)
mySurfaceViewThread.start();
}
}
public void pause() {
// Kill the graphics update thread
if (mySurfaceViewThread != null) {
mySurfaceViewThread.requestExitAndWait();
mySurfaceViewThread = null;
}
}
public void surfaceCreated(SurfaceHolder holder) {
hasSurface = true;
if (mySurfaceViewThread != null)
mySurfaceViewThread.start();
}
public void surfaceDestroyed(SurfaceHolder holder) {
hasSurface = false;
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Chapter 11: Advanced Android Development
pause();
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
if (mySurfaceViewThread != null)
mySurfaceViewThread.onWindowResize(w, h);
}
class MySurfaceViewThread extends Thread {
private boolean done;
MySurfaceViewThread() {
super();
done = false;
}
@Override
public void run() {
SurfaceHolder surfaceHolder = holder;
// Repeat the drawing loop until the thread is stopped.
while (!done) {
// Lock the surface and return the canvas to draw onto.
Canvas canvas = surfaceHolder.lockCanvas();
// TODO: Draw on the canvas!
// Unlock the canvas and render the current image.
surfaceHolder.unlockCanvasAndPost(canvas);
}
}
public void requestExitAndWait() {
// Mark this thread as complete and combine into
// the main application thread.
done = true;
try {
join();
} catch (InterruptedException ex) { }
}
public void onWindowResize(int w, int h) {
// Deal with a change in the available surface size.
}
}
}