Android 异常 java.lang.UnsupportedOperationException at android.view.GLES20Canvas.clipPath(GLES20Canv

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本文介绍了一个关于Android 4.0版本中默认开启硬件加速功能所导致的问题，并提供了两种解决方案：一种是在Java代码中设置View的LayerType为软件绘制；另一种是在AndroidManifest.xml中禁用特定组件的硬件加速。

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异常logcat：

10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.ViewGroup.drawChild(ViewGroup.java:2850)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2489)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.View.getDisplayList(View.java:10420)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.ViewGroup.drawChild(ViewGroup.java:2850)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2489)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.View.getDisplayList(View.java:10420)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.ViewGroup.drawChild(ViewGroup.java:2850)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2489)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.View.draw(View.java:10986)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.widget.FrameLayout.draw(FrameLayout.java:450)
10-14 09:48:06.092: E/AndroidRuntime(1597): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2127)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.View.getDisplayList(View.java:10422)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.HardwareRenderer$GlRenderer.draw(HardwareRenderer.java:842) //硬件加速
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.ViewRootImpl.draw(ViewRootImpl.java:2039)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1763)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2580)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.os.Handler.dispatchMessage(Handler.java:99)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.os.Looper.loop(Looper.java:137)
10-14 09:48:06.092: E/AndroidRuntime(1597): at android.app.ActivityThread.main(ActivityThread.java:4424)
10-14 09:48:06.092: E/AndroidRuntime(1597): at java.lang.reflect.Method.invokeNative(Native Method)
10-14 09:48:06.092: E/AndroidRuntime(1597): at java.lang.reflect.Method.invoke(Method.java:511)
10-14 09:48:06.092: E/AndroidRuntime(1597): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
10-14 09:48:06.092: E/AndroidRuntime(1597): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
10-14 09:48:06.092: E/AndroidRuntime(1597): at dalvik.system.NativeStart.main(Native Method)

这个问题是Google4.0原生的FW Bug。大概就是4.0之后默认开启硬件加速功能。

导致在eclipse里面编译没有，在源代码中编译有，后来找到原因，是源码编译打开了硬件加速导致的

解决方法1 java中:

View.setLayerType(View.LAYER_TYPE_SOFTWARE, null);  //View 就是你的view

解决方法2AndroidManifest.xml中 :

就是在AndroidManifest.xml中禁用硬件加速，可以写在Application标签里，也可以写在Activity里

android:hardwareAccelerated = "false"