15

我已经在我的 android 应用程序中重载了 Application 类，并且我正在使用ACRA报告系统。我的应用看起来像（这里是真正的源代码）：

public class MyApplication extends Application 
{
    @Override
    public void onCreate() {        
        ACRA.init( this );

        /*
         * Initialize my singletons etc
         * ...
         * ...
         */
        super.onCreate();
    }
}

据我所知，Application 对象应该只创建一次，所以 onCreate 方法应该只调用一次。问题是，在我的崩溃报告中（来自 ACRA）我有这个：

java.lang.RuntimeException: Unable to create service it.evilsocket.myapp.net.N ...
java.lang.RuntimeException: Unable to create service it.evilsocket.myapp.net.NetworkMonitorService: java.lang.RuntimeException: Unable to create application it.evilsocket.myapp.MyApplication: **java.lang.IllegalStateException: ACRA#init called more than once**
    at android.app.ActivityThread.handleCreateService(ActivityThread.java:2283)
    at android.app.ActivityThread.access$1600(ActivityThread.java:127)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1212)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:4441)
    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:784)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
    at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Unable to create application it.evilsocket.myapp.MyApplication: java.lang.IllegalStateException: ACRA#init called more than once
    at android.app.LoadedApk.makeApplication(LoadedApk.java:495)
    at android.app.ActivityThread.handleCreateService(ActivityThread.java:2269)
    ... 10 more
Caused by: java.lang.IllegalStateException: ACRA#init called more than once
    at org.acra.ACRA.init(ACRA.java:118)
    at it.evilsocket.myapp.MyApplication.onCreate(MyApplication.java:46)
    at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:969)
    at android.app.LoadedApk.makeApplication(LoadedApk.java:492)
    ... 11 more
java.lang.RuntimeException: Unable to create application it.evilsocket.myapp.MyApplication: java.lang.IllegalStateException: ACRA#init called more than once
    at android.app.LoadedApk.makeApplication(LoadedApk.java:495)
    at android.app.ActivityThread.handleCreateService(ActivityThread.java:2269)
    at android.app.ActivityThread.access$1600(ActivityThread.java:127)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1212)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:4441)
    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:784)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
    at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException: ACRA#init called more than once
    at org.acra.ACRA.init(ACRA.java:118)
    at it.evilsocket.myapp.MyApplication.onCreate(MyApplication.java:46)
    at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:969)
    at android.app.LoadedApk.makeApplication(LoadedApk.java:492)
    ... 11 more
java.lang.IllegalStateException: ACRA#init called more than once
    at org.acra.ACRA.init(ACRA.java:118)
    at it.evilsocket.myapp.MyApplication.onCreate(MyApplication.java:46)
    at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:969)
    at android.app.LoadedApk.makeApplication(LoadedApk.java:492)
    at android.app.ActivityThread.handleCreateService(ActivityThread.java:2269)
    at android.app.ActivityThread.access$1600(ActivityThread.java:127)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1212)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:4441)
    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:784)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
    at dalvik.system.NativeStart.main(Native Method)

所以看起来应用程序 onCreate 被多次调用，对此有什么想法吗？

笔记：

  • 在我的 android xml 清单中，我没有使用android:process="string" 属性。
  • 是的，我确信在我的初始化例程中我不会意外调用 MyApplication.onCreate 。
4

3 回答 3

30

我认为您的申请中有额外的流程。这就是 Application.onCreate 被多次调用的原因。查看您的清单文件并尝试使用类似android:process=的内容查找活动或服务。这意味着活动/服务正在第二个 Dalvik VM 中启动，这就是创建另一个应用程序实例的原因。

于 2013-05-16T09:59:20.367 回答
8

如果您查看堆栈跟踪，它看起来像是ACRA.init在调用makeApplication. 我怀疑有某种代码可以检查应用程序是否已经创建，如果没有，请创建它，并且它是由您调用ACRA.initbefore引起的super.onCreate。通常，在覆盖onCreate方法（无论是Application还是Activity）时，建议将其super.onCreate作为实现的第一行调用，然后再执行自定义操作。我会试一试，看看它是否能解决问题。

于 2012-10-09T23:54:24.977 回答
6

我也在野外使用 ACRA 4.4.0 看到了这一点。

也许在 init 方法下像这样简单？

if (mApplication != null) {
    throw new IllegalStateException("ACRA#init called more than once");
    //(return or finish or gracefully exit somehow)       
} else {
    mApplication = app;
    //and then continue with rest of acra init...

编辑：2012 年 12 月 27 日作为对此的跟进，凯文似乎已经采用了这些更改。详细信息在这里： https ://github.com/ACRA/acra/commit/cda06f5b803a09e9e7cc7dafae2c65c8fa69b861

于 2012-11-25T17:18:33.700 回答