android surfaceview示例源码下载

package tjuci.edu.dl; //Download by http://www.codefans.net import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Rect; import android.os.Bundle; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceHolder.Callback; import android.view.SurfaceView; import android.view.View; import android.view.View.OnTouchListener; public class SurfaceViewTestActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); SurfaceView sv = (SurfaceView)findViewById(R.id.sv); final SurfaceHolder sh= sv.getHolder(); final Paint paint = new Paint(); sh.addCallback(new Callback() { @Override public void surfaceDestroyed(SurfaceHolder holder) { // TODO Auto-generated method stub } @Override public void surfaceCreated(SurfaceHolder holder) { // TODO Auto-generated method stub Canvas canvas = sh.lockCanvas(); Bitmap b = BitmapFactory.decodeResource(SurfaceViewTestActivity.this.getResources(), R.drawable.sun); canvas.drawBitmap(b, 0, 0, null); sh.unlockCanvasAndPost(canvas); sh.lockCanvas(new Rect(0, 0, 0, 0)); sh.unlockCanvasAndPost(canvas); } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { // TODO Auto-generated method stub } }); sv.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { if(event.getAction() == MotionEvent.ACTION_DOWN){ int x = (int) event.getX(); int y = (int) event.getY(); paint.setColor(Color.RED); Canvas canvas = sh.lockCanvas(new Rect(x-50, y-50, x+50, y+50)); // canvas.save(); canvas.rotate(30, x, y); canvas.drawRect(x-40, y-40, x, y, paint); // canvas.restore(); paint.setColor(Color.GREEN); canvas.drawRect(x, y, x+40, y+40, paint); sh.unlockCanvasAndPost(canvas); sh.lockCanvas(new Rect(0, 0, 0, 0)); sh.unlockCanvasAndPost(canvas); } return false; } }); } }