动态水波效果-优快云博客

public class BitmapMovie extends Activity{ @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(new BitmapMovieView(this)); } } class BitmapMovieView extends SurfaceView implements Callback,Runnable{ private SurfaceHolder mSurfaceHolder; private Paint mPaint; private Canvas mCanvas; private Thread mThread; private Bitmap mBitmap; private int mBmpX; private int mBmpY; private boolean mFlag; public BitmapMovieView(Context context) { super(context); mSurfaceHolder=this.getHolder(); mSurfaceHolder.addCallback(this); mPaint=new Paint(); mPaint.setColor(Color.WHITE); mPaint.setAntiAlias(true); setFocusable(true); } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { // TODO Auto-generated method stub } @Override public void surfaceCreated(SurfaceHolder holder) { mBitmap=BitmapFactory.decodeResource(getResources(), R.drawable.water); mBmpX=-mBitmap.getWidth()+this.getWidth(); mBmpY=this.getHeight()-mBitmap.getHeight(); mFlag=true; mThread=new Thread(this,"My Draw"); mThread.start(); } @Override public void surfaceDestroyed(SurfaceHolder holder) { mFlag=false; } @Override public void run() { while (mFlag) { long start=System.currentTimeMillis(); myDraw(); logic(); long end=System.currentTimeMillis(); if ((end-start)<50) { try { Thread.sleep(50-(end-start)); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } } private void myDraw() { try { mCanvas=mSurfaceHolder.lockCanvas(); if (mCanvas != null) { mCanvas.drawColor(Color.WHITE); mCanvas.drawBitmap(mBitmap, mBmpX, mBmpY, new Paint()); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ if (mCanvas != null) { mSurfaceHolder.unlockCanvasAndPost(mCanvas); } } } private void logic() { mBmpX+=5; } }