Android(安卓)NullPointerException at android.text.BoringLayout.isBoring
16lz
2022-05-28
最近遇到个很奇怪的问题,如题,下面是详细报错信息:
E/AndroidRuntime: FATAL EXCEPTION: main java.lang.NullPointerException at android.text.BoringLayout.isBoring(BoringLayout.java:260) at android.widget.TextView.onMeasure(TextView.java:6158) at android.view.View.measure(View.java:15518) at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:681) at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461) at android.view.View.measure(View.java:15518) at android.widget.ListView.setupChild(ListView.java:1909) at android.widget.ListView.makeAndAddView(ListView.java:1834) at android.widget.ListView.fillSpecific(ListView.java:1320) at android.widget.ListView.layoutChildren(ListView.java:1642) at android.widget.AbsListView.onLayout(AbsListView.java:1994) at android.view.View.layout(View.java:14008) at android.view.ViewGroup.layout(ViewGroup.java:4373) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521) at android.widget.LinearLayout.onLayout(LinearLayout.java:1434) at android.view.View.layout(View.java:14008) at android.view.ViewGroup.layout(ViewGroup.java:4373) at android.widget.FrameLayout.onLayout(FrameLayout.java:448) at android.view.View.layout(View.java:14008) at android.view.ViewGroup.layout(ViewGroup.java:4373) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521) at android.widget.LinearLayout.onLayout(LinearLayout.java:1434) at android.view.View.layout(View.java:14008) at android.view.ViewGroup.layout(ViewGroup.java:4373) at android.widget.FrameLayout.onLayout(FrameLayout.java:448) at android.view.View.layout(View.java:14008) at android.view.ViewGroup.layout(ViewGroup.java:4373) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1663) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1521) at android.widget.LinearLayout.onLayout(LinearLayout.java:1434) at android.view.View.layout(View.java:14008) at android.view.ViewGroup.layout(ViewGroup.java:4373) at android.widget.FrameLayout.onLayout(FrameLayout.java:448) at android.view.View.layout(View.java:14008) at android.view.ViewGroup.layout(ViewGroup.java:4373) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1892) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1711) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749) at android.view.Choreographer.doCallbacks(Choreographer.java:562) at android.view.Choreographer.doFrame(Choreographer.java:532) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735) at android.os.Handler.handleCallback(Handler.java:725) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:5041) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) at dalvik.system.NativeStart.main(Native Method)
经过排查,是因为项目中用了一个继承自 TextView 的自定义控件,在 setText 方法里面,某些情况直接 return 掉了,然后导致的异常。当重写了 setText 方法的时候,如果调用它,它必须被设值,不能中途强行中断。
http://stackoverflow.com/questions/18214450/nullpointerexception-at-boringlayout-isboring-is-anything-but-boring
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