gameloop线程崩溃onresume

时间:2013-11-10 18:00:55

标签: android game-loop

我刚刚完成了一个小游戏,第二个,基于java4edu完成的代码: http://www.edu4java.com/en/game/game0-en.html

然而,在我的mod之后,我遇到了一个小故障,无论什么时候我,恢复,旋转屏幕,将屏幕更改为(从图库加载),或者将画布发送到背景的任何内容; onresume,我得到一个错误,其中logcat总是指向这个:     canvas.drawBitmap(bka,0,0,null);

我认为更重要的是我需要在合适的时间停止我的游戏循环线程,以便刷新并重新加载绘制值,但是idk,建议请给我一个!!

package com.doggy.__elite;


import android.annotation.SuppressLint;
import android.graphics.Canvas;

public class GameLoopThread extends Thread {
       static final long FPS = 100;
       private GameView view;
       private boolean running = false;

       public GameLoopThread(GameView view) {
             this.view = view;
       }

       public void setRunning(boolean run) {
             running = run;
       }

       @SuppressLint("WrongCall")
    @Override
       public void run() {

             while (running) {
                    Canvas c = null;

                    try {
                           c = view.getHolder().lockCanvas();
                           synchronized (view.getHolder()) {
                                  view.onDraw(c);
                           }
                    } finally {
                           if (c != null) {
                                  view.getHolder().unlockCanvasAndPost(c);
                           }
                    }



             }
       }

}

第141行是:         bka = Bitmap.createScaledBitmap(bka,Dwidtha,Dheighta,true); - 要么 -         canvas.drawBitmap(bka,0,0,null); 我发现暂停问题,我只需要添加:     public void onPause(Bundle savedInstanceState){         super.onPause();     } :)

恢复时会发生这种情况:

11-24 12:16:12.538:E / AndroidRuntime(20772):致命异常:主要 11-24 12:16:12.538:E / AndroidRuntime(20772):java.lang.NullPointerException 11-24 12:16:12.538:E / AndroidRuntime(20772):at com.doggy .__ elite.GameView $ 1.surfaceCreated(GameView.java:66) 11-24 12:16:12.538:E / AndroidRuntime(20772):在android.view.SurfaceView.updateWindow(SurfaceView.java:545) 11-24 12:16:12.538:E / AndroidRuntime(20772):在android.view.SurfaceView.onWindowVisibilityChanged(SurfaceView.java:226) 11-24 12:16:12.538:E / AndroidRuntime(20772):在android.view.View.dispatchWindowVisibilityChanged(View.java:5851) 11-24 12:16:12.538:E / AndroidRuntime(20772):在android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:951) 11-24 12:16:12.538:E / AndroidRuntime(20772):在android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:951) 11-24 12:16:12.538:E / AndroidRuntime(20772):在android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:951) 11-24 12:16:12.538:E / AndroidRuntime(20772):在android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1038) 11-24 12:16:12.538:E / AndroidRuntime(20772):在android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2583) 11-24 12:16:12.538:E / AndroidRuntime(20772):在android.os.Handler.dispatchMessage(Handler.java:99) 11-24 12:16:12.538:E / AndroidRuntime(20772):在android.os.Looper.loop(Looper.java:137) 11-24 12:16:12.538:E / AndroidRuntime(20772):在android.app.ActivityThread.main(ActivityThread.java:4508) 11-24 12:16:12.538:E / AndroidRuntime(20772):at java.lang.reflect.Method.invokeNative(Native Method) 11-24 12:16:12.538:E / AndroidRuntime(20772):at java.lang.reflect.Method.invoke(Method.java:511) 11-24 12:16:12.538:E / AndroidRuntime(20772):at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:809) 11-24 12:16:12.538:E / AndroidRuntime(20772):at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576) 11-24 12:16:12.538:E / AndroidRuntime(20772):at dalvik.system.NativeStart.main(Native Method)

第66行是:                 gameLoopThread.setRunning(真);

0 个答案:

没有答案