刚刚在 Android 开发控制台上收到以下崩溃报告，但它没有命中我的代码，并且报告没有显示 Android 版本：
检查 4.1.x 和 4.0.x 的源代码，第 345 行是这个，length() 在接口中定义：return getText().length();
这怎么可能真的不见了？我假设我在某些东西上使用了 setText() 并且它不好，但是我是否进行调查，虽然我不知道它实际发生在哪里！？
java.lang.IncompatibleClassChangeError: interface not implemented
at android.text.BoringLayout.getLineStart(BoringLayout.java:345)
at android.text.Layout.drawText(Layout.java:229)
at android.text.Layout.draw(Layout.java:205)
at android.text.BoringLayout.draw(BoringLayout.java:400)
at android.widget.TextView.onDraw(TextView.java:4886)
at android.view.View.draw(View.java:13470)
at android.view.View.draw(View.java:13354)
at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
at android.view.View.draw(View.java:13352)
at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
at android.view.View.draw(View.java:13352)
at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
at android.view.View.draw(View.java:13575)
at android.widget.FrameLayout.draw(FrameLayout.java:467)
at android.widget.ScrollView.draw(ScrollView.java:1569)
at android.view.View.draw(View.java:13354)
at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
at android.view.View.draw(View.java:13352)
at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
at android.view.View.draw(View.java:13352)
at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
at android.view.View.draw(View.java:13352)
at android.view.ViewGroup.drawChild(ViewGroup.java:2929)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2799)
at android.view.View.draw(View.java:13473)
at android.widget.FrameLayout.draw(FrameLayout.java:467)
at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2185)
at android.view.ViewRootImpl.drawSoftware(ViewRootImpl.java:2258)
at android.view.ViewRootImpl.draw(ViewRootImpl.java:2153)
at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2021)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1832)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4214)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
at android.view.Choreographer.doCallbacks(Choreographer.java:555)
at android.view.Choreographer.doFrame(Choreographer.java:525)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4899)
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:791)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558)
at dalvik.system.NativeStart.main(Native Method)