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android - GLSurfaceView.onDetachedFromWindow 方法

转载 作者:行者123 更新时间:2023-11-29 00:48:41 29 4
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我对 GLSurfaceView 有一些小问题,当我开始我的 Activity 时,我使用这行代码使 GLSurfaceView 不可见:

glSurface.setVisibility(View.INVISIBLE);

在这段时间里,我启动了一个从网络下载图像的 AsyncTask,此时,如果我按下后退按钮,我会遇到这个异常:

java.lang.NullPointerException
E/AndroidRuntime( 1847): at android.opengl.GLSurfaceView.onDetachedFromWindow(GLSurfaceView.java:530)
E/AndroidRuntime( 1847): at android.view.View.dispatchDetachedFromWindow(View.java:6033)
E/AndroidRuntime( 1847): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1156)
E/AndroidRuntime( 1847): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1156)
E/AndroidRuntime( 1847): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1156)
E/AndroidRuntime( 1847): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1156)
E/AndroidRuntime( 1847): at android.view.ViewRoot.dispatchDetachedFromWindow(ViewRoot.java:1630)
E/AndroidRuntime( 1847): at android.view.ViewRoot.doDie(ViewRoot.java:2671)
E/AndroidRuntime( 1847): at android.view.ViewRoot.die(ViewRoot.java:2641)
E/AndroidRuntime( 1847): at android.view.WindowManagerImpl.removeViewImmediate(WindowManagerImpl.java:218)
E/AndroidRuntime( 1847): at android.view.Window$LocalWindowManager.removeViewImmediate(Window.java:436)
E/AndroidRuntime( 1847): at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3684)
E/AndroidRuntime( 1847): at android.app.ActivityThread.access$2900(ActivityThread.java:125)
E/AndroidRuntime( 1847): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
E/AndroidRuntime( 1847): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 1847): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime( 1847): at android.app.ActivityThread.main(ActivityThread.java:4627)
E/AndroidRuntime( 1847): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 1847): at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime( 1847): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
E/AndroidRuntime( 1847): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
E/AndroidR

怎么了?

最佳答案

可能是您没有设置渲染器。

来自android reference :

 onDetachedFromWindow ()... Must not be called before a renderer has been set.

因此,如果您设置渲染器(即使您还没有渲染任何东西),这可能会避免这个问题。

关于android - GLSurfaceView.onDetachedFromWindow 方法,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/4785182/

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