最近我在使用Android 4.0.3时遇到了一个问题,应用程序一启动就会出现以下异常(在其他版本的Android上运行正常):
java.lang.NullPointerException
at android.view.GLES20RecordingCanvas.drawPatch(GLES20RecordingCanvas.java:97)
at android.graphics.NinePatch.draw(NinePatch.java:125)
at android.graphics.drawable.NinePatchDrawable.draw(NinePatchDrawable.java:189)
at android.widget.ImageView.onDraw(ImageView.java:892)
at android.view.View.draw(View.java:10978)
at android.view.ViewGroup.drawChild(ViewGroup.java:2887)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2489)
at android.view.ViewGroup.drawChild(ViewGroup.java:2885)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2489)
at android.view.View.getDisplayList(View.java:10415)
at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2597)
at android.view.View.getDisplayList(View.java:10380)
at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2597)
at android.view.View.getDisplayList(View.java:10380)
at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2597)
at android.view.View.getDisplayList(View.java:10380)
at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2597)
at android.view.View.getDisplayList(View.java:10380)
at android.view.HardwareRenderer$GlRenderer.draw(HardwareRenderer.java:842)
at android.view.ViewRootImpl.draw(ViewRootImpl.java:1910)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1634)
at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
这与启用硬件加速有关,一旦我在清单上禁用它,应用程序就可以正常工作了。
通过搜索,我找到了Romain Guy的一些对话log(在该文档中搜索“drawPatch”),他在其中讨论了可能导致此问题的原因,尽管没有提出解决方法或修复建议,但我想知道是否应该仅为此Android版本禁用硬件加速,或者是否有解决方法?
感谢您的时间。
myView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
您需要一个if语句来检查API版本,然后使用上面的代码。 - A--C