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按HOME按钮后，应用程序启动应用程序主要活动的新实例

[英]After pressing HOME button, application starts a new instance of the application's main activity

原文 2013-03-12 09:23:00 9 2 android/ android-homebutton

I have MyApp ready, Now I see this bug, When I install the app it displays the splash screen, and moves to second activity and so on.Now when I click on HOME button and again start the app it starts from beginning and not from where I had left and this happens only when I install the app from Eclipse, and I notice that after the app restarts from beginning when I click back I can see that activity where I had left earlier? 我已准备好MyApp，现在我看到了这个错误，当我安装应用程序时它显示启动画面，然后移动到第二个活动等等。现在当我点击HOME按钮并再次启动应用程序时，它从头开始而不是从我离开的地方，只有当我从Eclipse安装应用程序时才会发生这种情况，我注意到应用程序从开始重新启动后，当我点击回来时，我可以看到我之前离开的活动？

I have looked into the following links: 我查看了以下链接：

https://code.google.com/p/android/issues/detail?id=14262 https://code.google.com/p/android/issues/detail?id=14262

How to prevent multiple instances of an activity when it is launched with different intents 如何使用不同的意图启动活动时，如何防止活动的多个实例

2 个解决方案

I think this is a bug in Android. 我认为这是Android中的一个错误。

Please perform following steps. 请执行以下步骤。

1)Delete your application and reinstall it. 1）删除您的应用程序并重新安装。

2) After installing the application, it will display two option "Done" & "Open" click on Done button. 2）安装完应用程序后，将显示两个选项“完成”和“打开”，单击完成按钮。

3) Now open the application from the application menu. 3）现在从应用程序菜单打开应用程序。 Your problem will be solved. 你的问题将得到解决。

When ever the HOME button is pressed, the application will start from the state where it left. 当按下HOME按钮时，应用程序将从它离开的状态开始。

If you are relaunching the same activity multiple times, please make use of intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP) or other Intent flags as applicable and also finish() your activities if they are not required in the activity chain. 如果您多次重新启动相同的活动，请使用intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)或其他适用的Intent标志，如果活动链中不需要，还要finish()您的活动。 You can as well control your back button using onKeyDown and control the presence on your activities explicitly. 您还可以使用onKeyDown控制后退按钮，并明确控制活动的状态。