clipover上的UnsupportedOperationException

使用Canvas clipPath时出现UnsupportedOperationException。clipover上的UnsupportedOperationException

这发生在HTC Sensation XE（4.0.3）上。它可以在其他4.0.3设备上完美工作。

这是代码：

@Override 
protected void dispatchDraw(Canvas canvas) { 
    canvas.save(); 
    canvas.clipPath(this._mClip); 
    super.dispatchDraw(canvas); 
    canvas.restore(); 
}

它未能对 “clipPath” 和以下堆栈：

11-06 12:05:53.650: E/AndroidRuntime(25021): FATAL EXCEPTION: main 

11-06 12:05:53.650: E/AndroidRuntime(25021): java.lang.UnsupportedOperationException 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.GLES20Canvas.clipPath(GLES20Canvas.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at com.applicat.meuchedet.views.RoundedListView.dispatchDraw(RoundedListView.java:76) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.View.draw(View.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.widget.AbsListView.draw(AbsListView.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.widget.ListView.draw(ListView.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.View.getDisplayList(View.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewGroup.drawChild(ViewGroup.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewGroup.dispatchDraw(ViewGroup.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.View.getDisplayList(View.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewGroup.drawChild(ViewGroup.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewGroup.dispatchDraw(ViewGroup.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.View.draw(View.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.View.getDisplayList(View.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewGroup.drawChild(ViewGroup.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewGroup.dispatchDraw(ViewGroup.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.View.getDisplayList(View.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewGroup.drawChild(ViewGroup.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewGroup.dispatchDraw(ViewGroup.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.View.getDisplayList(View.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewGroup.drawChild(ViewGroup.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewGroup.dispatchDraw(ViewGroup.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.View.draw(View.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.widget.FrameLayout.draw(FrameLayout.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.View.getDisplayList(View.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.HardwareRenderer$GlRenderer.draw(HardwareRenderer.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewRootImpl.draw(ViewRootImpl.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.os.Handler.dispatchMessage(Handler.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.os.Looper.loop(Looper.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at android.app.ActivityThread.main(ActivityThread.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at java.lang.reflect.Method.invokeNative(Native Method) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at java.lang.reflect.Method.invoke(Method.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java) 
11-06 12:05:53.650: E/AndroidRuntime(25021): at dalvik.system.NativeStart.main(Native Method)

来源

2012-11-06 theblitz

可能的重复[解决Canvas中不支持的Canvas.clipPath（）任何更多]（http://stackoverflow.com/questions/8895677/work-around-canvas-clippath-that-is-not-supported- in-android-any-more） – Warpzit

有一个答案here。简而言之：不再支持它，但如果禁用硬件加速，则仍然可以使用它。查看帖子了解更多信息。

来源

2012-11-06 10:49:12 Warpzit

非常感谢。现在尝试。 – theblitz

您可以通过编辑清单文件作为任何

<application android:hardwareAccelerated="true"> 
<activity ... /> 
<activity android:hardwareAccelerated="false" />

来源

2013-06-20 06:16:39 karts

对于其他人，您可以创建values-v14和values-v15（例如）并创建布尔值，以便根据API级别使用硬件加速：android：hardwareAccelerated =“@ bool/hardware_accelerated” – BamsBamx

我遇到同样的UnsupportedOperationException异常problem-当我有试图用帆布clipPath视图控制个别活动的硬件加速（），它只会在运行4.0.3的设备上崩溃。你可以看到我如何解决它here。

来源

2014-03-25 18:57:55 Phileo99

即使我来到这里了同样的错误是答案，帮我运行应用程序Android UnsupportedOperationException at Canvas.clipPath

来源

2015-02-03 10:22:07 Anonymous

就Android的新版本都支持clipPath()与硬件加速转向，这可能是一个更好的解决方案：

try { 
    canvas.clipPath(path); 
} catch (UnsupportedOperationException exception) { 
    setLayerType(View.LAYER_TYPE_SOFTWARE, null); 
    try { 
     canvas.clipPath(path); 
    } catch (UnsupportedOperationException exception2) { 
     // shouldn't happen, but just in case 
    } 
}

来源

2017-10-12 20:24:39

clipover上的UnsupportedOperationException

回答

相关问题