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我只是在玩帆布和表面視圖以獲得更好的理解，但是當我打開手機的碰撞和視圖幾乎相同時我雖然表面是支持保重在這裏我的代碼可以告訴我發生了什麼以及如何解決它。android canvas當我的手機崩潰時
public class test extends Activity {
private int Playery =0;
private int Playerx =0;
private float RectStartx =0;
private float RectStarty= 120;
private float RectEndx =240;
private float RectEndy =240;
private int ImageBottom;
private boolean trueOrFalse = true;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new Frame(this));
}
class Frame extends SurfaceView implements SurfaceHolder.Callback{
private frameThread thread;
public Frame(Context context) {
super(context);
getHolder().addCallback(this);
thread = new frameThread(getHolder(),this);
}
@Override
public void onDraw(Canvas canvas){
canvas.drawColor(Color.RED);
canvas.drawRect(RectStartx, RectStarty, RectEndx, RectEndy, new Paint(Color.RED));
if(trueOrFalse == true){
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.icon);
canvas.drawBitmap(bitmap, Playerx, Playery, null);
ImageBottom = Playery + bitmap.getHeight();
if(ImageBottom != RectStarty || Playerx > RectEndx || Playerx < RectStartx){
Playery = Playery+2;
}
if(Playery > RectEndx){
trueOrFalse = false;
}
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if(ImageBottom == RectStarty){
Playerx = Playerx+10;
}
return super.onTouchEvent(event);
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
public void surfaceCreated(SurfaceHolder holder) {
thread.setRunning(true);
thread.start();
}
public void surfaceDestroyed(SurfaceHolder holder) {
boolean retry = true;
while (retry){
try{
thread.join();
retry = false;
}catch(InterruptedException e){
}
}
}
}
class frameThread extends Thread{
private SurfaceHolder _surfaceHolder;
private Frame _frame;
private boolean _run = false;
public frameThread(SurfaceHolder surfaceHolder, Frame frame){
_surfaceHolder = surfaceHolder;
_frame = frame;
}
public void setRunning(boolean run){
_run = run;
}
@Override
public void run(){
Canvas c;
while(_run){
c = null;
try{
c = _surfaceHolder.lockCanvas(null);
synchronized (_surfaceHolder){
_frame.onDraw(c);
}
}finally{
if(c != null){
_surfaceHolder.unlockCanvasAndPost(c);
}
}
}
}
}
}