Android - GLSurface, errror while closing

Question

Every time I occur an error while I close the app. I dont know why? Its occur only on 2.3.7. Everything working fine on 3.2 and 4

FATAL EXCEPTION: main
java.lang.NullPointerException
at android.opengl.GLSurfaceView.onDetachedFromWindow(GLSurfaceView.java:533)
at android.view.View.dispatchDetachedFromWindow(View.java:6190)
at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
at android.view.ViewRoot.dispatchDetachedFromWindow(ViewRoot.java:1751)
at android.view.ViewRoot.doDie(ViewRoot.java:2766)
at android.view.ViewRoot.die(ViewRoot.java:2736)
at android.view.WindowManagerImpl.removeViewImmediate(WindowManagerImpl.java:218)
at android.view.Window$LocalWindowManager.removeViewImmediate(Window.java:477)
atandroid.app.ActivityThread.handleDestroyActivity(ActivityThread.java:2822)
at android.app.ActivityThread.access$2100(ActivityThread.java:123)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:972)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3835)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:847)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
at dalvik.system.NativeStart.main(Native Method)

score 2 · Accepted Answer · edited May 23 '17 at 11:49

2

Possibly a duplicate of this: GLSurfaceView.onDetachedFromWindow

Is the game actually working and running when you close the window? In the other question sounds like they never attached the renderer, but I'm not sure if that's true in your case.

edited May 23 '17 at 11:49

Community

1
1

answered Apr 24 '12 at 16:12

Tim

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score 0 · Answer 2 · answered Jan 14 '15 at 07:00

Because on 2.3 the GLSurfaceView.onDetachedFromWindow method didn't do nullpointer protection;However this method did nullpointer protection on other version above 2.3.

protected void onDetachedFromWindow() {
  super.onDetachedFromWindow();
  mGLThread.requestExitAndWait();
}

the solution is that set a render for your GLSurfaceView object like below:
mGLSurfaceView.setRenderer(new MyRenderer());

mGLThread is init in setRenderer() method;the code is below:

    public void setRenderer(Renderer renderer) {
        checkRenderThreadState();
        if (mEGLConfigChooser == null) {
            mEGLConfigChooser = new SimpleEGLConfigChooser(true);
        }
        if (mEGLContextFactory == null) {
            mEGLContextFactory = new DefaultContextFactory();
        }
        if (mEGLWindowSurfaceFactory == null) {
            mEGLWindowSurfaceFactory = new DefaultWindowSurfaceFactory();
        }
        mRenderer = renderer;
        mGLThread = new GLThread(mThisWeakRef);
        mGLThread.start();
    }
so if you have set a renderer on 2.3,you would not met the nullpointer exception;Hope this could help you.

Android - GLSurface, errror while closing

2 Answers2