自定义view出错，怎么找到出错位置？ 400 请求报错 

android开发使用自定义view的时候，在部分机型上会报出这样的错误：

java.lang.IllegalStateException: onMeasure() did not set the measured dimension by calling setMeasuredDimension()
	at android.view.View.measure(View.java:18864)
	at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:728)
	at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:464)
	at android.view.View.measure(View.java:18849)
	at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:728)
	at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:464)
	at android.view.View.measure(View.java:18849)
	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5904)
	at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1435)
	at android.widget.LinearLayout.measureVertical(LinearLayout.java:721)
	at android.widget.LinearLayout.onMeasure(LinearLayout.java:612)
	at android.view.View.measure(View.java:18849)
	at android.widget.ScrollView.measureChildWithMargins(ScrollView.java:2019)
	at android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
	at android.widget.ScrollView.onMeasure(ScrollView.java:487)
	at android.view.View.measure(View.java:18849)
	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5904)
	at android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
	at android.view.View.measure(View.java:18849)
	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5904)
	at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1435)
	at android.widget.LinearLayout.measureVertical(LinearLayout.java:721)
	at android.widget.LinearLayout.onMeasure(LinearLayout.java:612)
	at android.view.View.measure(View.java:18849)
	at android.widget.ScrollView.measureChildWithMargins(ScrollView.java:2019)
	at android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
	at android.widget.ScrollView.onMeasure(ScrollView.java:487)
	at android.view.View.measure(View.java:18849)
	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5904)
	at android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
	at android.view.View.measure(View.java:18849)
	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5904)
	at android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
	at android.view.View.measure(View.java:18849)
	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5904)
	at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:447)
	at android.view.View.measure(View.java:18849)
	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5904)
	at android.widget.FrameLayout.onMeasure(FrameLayout.java:436)
	at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:3073)
	at android.view.View.measure(View.java:18849)
	at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2343)
	at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1380)
	at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1623)
	at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1265)
	at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6945)
	at android.view.Choreographer$CallbackRecord.run(Choreographer.java:826)
	at android.view.Choreographer.doCallbacks(Choreographer.java:605)
	at android.view.Choreographer.doFrame(Choreographer.java:575)
	at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:812)
	at android.os.Handler.handleCallback(Handler.java:739)
	at android.os.Handler.dispatchMessage(Handler.java:95)
	at android.os.Looper.loop(Looper.java:145)
	at android.app.ActivityThread.main(ActivityThread.java:6837)
	at java.lang.reflect.Method.invoke(Native Method)
	at java.lang.reflect.Method.invoke(Method.java:372)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)