帧动画 FrameMovie

public class FrameMovie 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 FrameMovieView(this)); } } class FrameMovieView extends SurfaceView implements Callback,Runnable{ private SurfaceHolder mSurfaceHolder; private Thread mThread; private Canvas mCanvas; private boolean mFlag; private Bitmap[] mFishBitmaps=new Bitmap[10]; private int mCurrentFrame; private Paint mPaint; public FrameMovieView(Context context) { super(context); mSurfaceHolder=this.getHolder(); mSurfaceHolder.addCallback(this); mPaint=new Paint(); mPaint.setColor(Color.WHITE); mPaint.setAntiAlias(true); setFocusable(true); for (int i = 0; i < mFishBitmaps.length; i++) { mFishBitmaps[i]=BitmapFactory.decodeResource(getResources(), R.drawable.fish0+i); } } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { // TODO Auto-generated method stub } @Override public void surfaceCreated(SurfaceHolder holder) { mFlag=true; mThread=new Thread(this,"My Thread"); 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 logic() { mCurrentFrame++; if(mCurrentFrame>=mFishBitmaps.length){ mCurrentFrame=0; } } private void myDraw() { mCanvas=mSurfaceHolder.lockCanvas(); if (mCanvas != null) { mCanvas.drawColor(Color.WHITE); mCanvas.drawBitmap(mFishBitmaps[mCurrentFrame], 0,0,mPaint); } mSurfaceHolder.unlockCanvasAndPost(mCanvas); } }

问题一：

private void logic() { mCurrentFrame++; if(mCurrentFrame>=mFishBitmaps.length){ mCurrentFrame=0; } }在刚开始写这个函数的时候将if(mCurrentFrame>=mFishBitmaps.length)写成if(mCurrentFrame>mFishBitmaps.length)导致画面播放一会之后出现java.lang.ArrayIndexOutOfBoundsException