使用ACRA时的例外情况

Question

我的应用使用ACRA进行错误报告，并且我收到了一些来自我的设备的错误报告：只能使用低16位的requestCode .. Google显示使用时发生此错误startActivityForResult，但我已经搜索了我的代码几次，并且我不会在任何地方调用。

我很困惑，想知道这是如何影响用户的（有趣的是，崩溃报告测试版没有显示在所有的任何错误）。

其他人遇到这样？

java.lang.RuntimeException: Unable to resume activity {com.myapp/com.myapp.MyActivity}: 
java.lang.IllegalArgumentException: Can only use lower 16 bits for requestCode 
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2120) 
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2135) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:957) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:130) 
at android.app.ActivityThread.main(ActivityThread.java:3683) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:507) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
at dalvik.system.NativeStart.main(Native Method) 
Caused by: java.lang.IllegalArgumentException: Can only use lower 16 bits for requestCode 
at android.support.v4.app.g.startActivityForResult(SourceFile:690) 
at com.android.e.a.a(Unknown Source) 
at com.android.e.e.a(Unknown Source) 
at com.android.o.e.a(Unknown Source) 
at com.android.o.b.a(Unknown Source) 
at com.android.framework.context.d.a(Unknown Source) 
at com.android.framework.context.d.onResume(Unknown Source) 
at com.android.Kiwi.onResume(Unknown Source) 
at com.myapp.MyActivity.onResume(SourceFile) 
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1150) 
at android.app.Activity.performResume(Activity.java:3832) 
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2110) 
... 10 more 
java.lang.IllegalArgumentException: Can only use lower 16 bits for requestCode 
at android.support.v4.app.g.startActivityForResult(SourceFile:690) 
at com.android.e.a.a(Unknown Source) 
at com.android.e.e.a(Unknown Source) 
at com.android.o.e.a(Unknown Source) 
at com.android.o.b.a(Unknown Source) 
at com.android.framework.context.d.a(Unknown Source) 
at com.android.framework.context.d.onResume(Unknown Source) 
at com.android.Kiwi.onResume(Unknown Source) 
at com.myapp.MyActivity.onResume(SourceFile) 
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1150) 
at android.app.Activity.performResume(Activity.java:3832) 
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2110) 
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2135) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:957) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:130) 
at android.app.ActivityThread.main(ActivityThread.java:3683) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:507) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
at dalvik.system.NativeStart.main(Native Method) 

有人可以帮助我吗？

Answer 1

从FragmentActivity的源代码：

/** 
* Modifies the standard behavior to allow results to be delivered to fragments. 
* This imposes a restriction that requestCode be <= 0xffff. 
*/ 
@Override 
public void startActivityForResult(Intent intent, int requestCode) { 
    if (requestCode != -1 && (requestCode&0xffff0000) != 0) { 
     throw new IllegalArgumentException("Can only use lower 16 bits for requestCode"); 
    } 
    super.startActivityForResult(intent, requestCode); 
} 

看来你的请求的代码只能去高达0xffff，换算成65535我们基地10种痴迷人类。