Google Play在Monodroid应用程序上的崩溃报告

Question

I have received this this crash report on my goole play console:

  java.lang.NullPointerException
at com.google.android.maps.PixelConverter.toPixels(PixelConverter.java:71)
at com.google.android.maps.PixelConverter.toPixels(PixelConverter.java:61)
at com.google.android.maps.MapView.onLayout(MapView.java:727)
at android.view.View.layout(View.java:14459)
at android.view.ViewGroup.layout(ViewGroup.java:4469)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1669)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1527)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1440)
at android.view.View.layout(View.java:14459)
at android.view.ViewGroup.layout(ViewGroup.java:4469)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:14459)
at android.view.ViewGroup.layout(ViewGroup.java:4469)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1669)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1527)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1440)
at android.view.View.layout(View.java:14459)
at android.view.ViewGroup.layout(ViewGroup.java:4469)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:14459)
at android.view.ViewGroup.layout(ViewGroup.java:4469)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2132)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1951)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1164)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4845)
at android.view.Choreographer$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$FrameDisplayEventReceiver.run(Choreographer.java:735)
at android.os.Handler.handleCallback(Handler.java:725)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5264)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
at dalvik.system.NativeStart.main(Native Method)

This is a java stack trace and my code is on the monodroid and by c#. How can I detect what is my problem?

Answer 1

Your problem seems to be that you are mixing Maps API v2 and deprecated v1. com.google.android.maps.MapView is a class from the old API.

Answer 2

Please see first line of crash report: java.lang.NullPointerException

One method interrupted with an exception, so some global variables not instantiate and remain null . so application cause with crash.