[英]Android Activity Life Cycle: OnRestart being called after OnDestroy
I have come across an unusual problem. 我遇到了一个不寻常的问题。 In my Android App, I log all the activity lifecycle events as a matter of routine.
在我的Android应用程序中,我记录所有活动生命周期事件作为例行事项。 One of my activities should be finished when another one opens.
当另一个活动打开时,我的一个活动应该完成。 However, occasionally I get bugs occurring because it has not closed.
但是,偶尔我会发现错误,因为它还没有关闭。 Upon investigation it seems that the activity is being destroyed, but then restarted - below is the relevant portion of my app's log, most recent event first:
经过调查,似乎活动正在被销毁,但随后重新开始 - 以下是我的应用程序日志的相关部分,最近的事件是:
dt="16:37:47:982" (1) Activity [Job Details] resumed dt =“16:37:47:982”(1)活动[工作细节]恢复
dt="16:37:47:980" (1) Activity [Job Details] restarted dt =“16:37:47:980”(1)活动[作业详细信息]重新启动
dt="16:34:54:689" (1) Activity [Job Details] on destroyed dt =“16:34:54:689”(1)被破坏的活动[工作细节]
dt="16:34:54:686" (1) Activity [Job Details] stopped dt =“16:34:54:686”(1)活动[工作细节]停止
According to the activity life cycle OnRestart cannot be called after OnDestroy, see http://developer.android.com/reference/android/app/Activity.html All the relevant activity life cycle events are logged - eg OnCreate would result in an entry in my log, but there is no evidence for this! 根据活动生命周期OnRestart在OnDestroy之后无法调用,请参阅http://developer.android.com/reference/android/app/Activity.html所有相关活动生命周期事件都会被记录 - 例如OnCreate会导致输入在我的日志中,但没有证据证明这一点! Has anyone seen something similar?
有没有人见过类似的东西? I don't know what's going on!
我不知道发生了什么事! This happened on Android 5.0
这发生在Android 5.0上
My log statements are in a base class for each activity. 我的日志语句位于每个活动的基类中。 My Activity is declared thus (it is written in C# / Xamarin):
我的Activity被声明(它是用C#/ Xamarin编写的):
[Activity(Label = "Job Details")]
public class WebViewer : BaseActivity
Where BaseActivity contains overrides of all the lifecycle events which I log. 其中BaseActivity包含我记录的所有生命周期事件的覆盖。 For example:
例如:
public class BaseActivity : Activity, IForceLogOff, ISettingsUpdated, IJobUnassigned, IDisplayUpgradeWarning
{
protected override void OnDestroy()
{
base.OnDestroy();
Log.WriteLog("Activity [" + this.Title + "] on destroyed", ELogType.GUI);
AppStorage.GetAppStorageInstance().LastGUIActivityDT = TConverting.GetCurrentDT();
NoInstancesManager.DecrementCount(this.GetType().FullName);
}
protected override void OnRestart()
{
base.OnRestart();
Log.WriteLog("Activity [" + this.Title + "] restarted", ELogType.GUI);
AppStorage.GetAppStorageInstance().LastGUIActivityDT = TConverting.GetCurrentDT();
}
etc
}
There's nearly 3 minutes between the destruction of your Activity and the restart of it. 在销毁活动和重新启动活动之间差不多有3分钟。 I guess you restarted it yourself ?
我猜你自己重启了吗?
PS : Code of your Activity might help identify the problem, if there's one. PS:您的活动代码可能有助于识别问题,如果有的话。
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