Instrumentation.execStartActivity 中的 Android NullPointerException [英] Android NullPointerException in Instrumentation.execStartActivity

问题描述

我不断收到一些用户的波纹管异常:

I keep getting the bellow exception from some users:

java.lang.NullPointerException
    at android.app.Instrumentation.execStartActivity(Instrumentation.java:1414)
    at android.app.Activity.startActivityForResult(Activity.java:2880)
    at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:817)
    at android.app.Activity.startActivity(Activity.java:2986)
    at com.google.android.gms.internal.bb$5.onClick(Unknown Source)
    at android.view.View.performClick(View.java:2535)
    at android.view.View$PerformClick.run(View.java:9130)
    at android.os.Handler.handleCallback(Handler.java:618)
    at android.os.Handler.dispatchMessage(Handler.java:123)
    at android.os.Looper.loop(SourceFile:351)
    at android.app.ActivityThread.main(ActivityThread.java:3826)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:538)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:969)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:727)
    at dalvik.system.NativeStart.main(Native Method)

我在此处发现了类似的问题a> 但自四月以来就没有得到照顾.我只知道它是在三星 Galaxy Y (GT-S5360) 上复制的，我使用的是 Google Maps Android API v2.

I've found a similar problem here but it's not taken care of since April. All I know is that it was reproduced on a Samsung Galaxy Y (GT-S5360) and I'm using Google Maps Android API v2.

你知道我该如何解决这个问题吗?

Do you have any idea how can I make a workaround for this?

推荐答案

我也有同样的错误，我也在使用 Google Maps API.它似乎发生在所有 Android 版本和手机上.仅举几例:

I have the same error, I also use Google Maps API. It seems to happen on all Android versions and phones. Just to mention few:

AN10DG3、GT-I8190、F815、GT-I9300、GOOPHONE、HTC One、KFTT、MID8127、KFAPWI、AN10DG3

AN10DG3, GT-I8190, F815, GT-I9300, GOOPHONE, HTC One, KFTT, MID8127, KFAPWI, AN10DG3

java.lang.NullPointerException
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1409)
at android.app.Activity.startActivityForResult(Activity.java:3351)
at android.app.Activity.startActivityForResult(Activity.java:3312)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:839)
at android.app.Activity.startActivity(Activity.java:3522)
at android.app.Activity.startActivity(Activity.java:3490)
at com.google.android.gms.dynamic.a$5.onClick(Unknown Source)
at android.view.View.performClick(View.java:4084)
at android.view.View$PerformClick.run(View.java:16966)
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:4745)
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:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method) 

当我在某处读到时，解决方案是:

as I read somewhere, solution is:

如果您的模拟器或设备未安装 google play 服务，则可能会出现上述问题.我没有完美的解决方案，但我想出了一些解决方法来避免您的应用程序崩溃.在这种情况下，您必须遵循简单的步骤

Above mentioned problem can occur if you have emulator or device in which google play services are not installed. I don't have perfect solution but I figured out some work around to save your app from crashing. In this case you have to follow simple steps

1. 覆盖 startActivityForResult(intent, requestcode)
2. 在 startActivityForResult 中添加 super 调用 super.startActivityForResult 在 try catch 中并捕获 NullPointerException

轻松完成现在您可以在此处捕获空指针异常并在 catch 中添加您的错误处理

Easy its done Now you can trap the nullpointerexception here and add your error handling in catch

@Override
public void startActivityForResult(Intent intent, int requestCode) {
    try {
        super.startActivityForResult(intent, requestCode);
    } catch (Exception e) {
        // fixes Google Maps bug: http://stackoverflow.com/a/20905954/2075875
    }
}

这篇关于Instrumentation.execStartActivity 中的 Android NullPointerException的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！