[英]Android Application class method onCreate being called multiple times
我在我的Android應用程序中重載了Application類,我正在使用ACRA報告系統。 我的應用程序看起來像( 這里的真實源代碼 ):
public class MyApplication extends Application
{
@Override
public void onCreate() {
ACRA.init( this );
/*
* Initialize my singletons etc
* ...
* ...
*/
super.onCreate();
}
}
據我所知,Application對象只應創建一次,因此onCreate方法只應調用一次。 問題是,在我的崩潰報告中(來自ACRA)我有這個:
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)
所以似乎onCreate的應用程序被多次調用,對此有何看法?
筆記:
我認為您的申請中還有其他流程。 這就是為什么不止一次調用Application.onCreate的原因。 查看您的清單文件並嘗試使用android:process =等內容查找活動或服務。 這意味着活動/服務正在第二個Dalvik VM中啟動,這就是創建另一個應用程序實例的原因。
如果查看堆棧跟蹤,看起來ACRA.init
正在調用makeApplication
。 我懷疑是有某種形式的代碼檢查,如果該應用程序已經被創建,如果沒有,創建它,它是由您的通話造成ACRA.init
之前super.onCreate
。 通常,當覆蓋onCreate
方法(無論是Application
還是Activity
)時,建議將super.onCreate
作為實現的第一行調用,然后再執行自定義操作。 我會試一試,看看它是否能解決問題。
我也在野外看到ACRA 4.4.0。
也許在init方法下這么簡單?
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...
編輯:12/27/12作為對此的跟進,看起來Kevin已經采納了這些變化。 詳情請訪問: https : //github.com/ACRA/acra/commit/cda06f5b803a09e9e7cc7dafae2c65c8fa69b861
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