Android viewModel savedStateHandle [英] Android viewModel savedStateHandle

问题描述

这更多是一个概念性的问题.

This is more of a conceptual question.

Android最近引入了在ViewModel内部处理进程死机时处理状态的概念，而不是以前曾在Activity或Fragment中使用的 savedInstanceState .

Android recently introduced the concept of handling the state during process death inside viewModel rather than savedInstanceState which previously used to be in Activity or Fragment.

我的问题是如何测试此过程的死亡?如果我正确地理解了文档，那么当应用程序不再在后台使用时，进程死亡恰好是Android杀死了该应用程序，因为该应用程序的内存已满.

My question is how do I test this process death? If I rightly understand the documentation, the Process death happens to be Android killing the app due to full memory when app is no longer used in background.

当用户从RAM中杀死应用程序时，viewModel也将保存状态吗?这样我就可以在用户再次打开应用程序时检索状态.

Also will the viewModel save the state when user kills the app from the RAM? So that I can retrieve the state as the user opens the app again.

推荐答案

1. 启用不保留活动"
2. 启动您的应用
3. 点击主页按钮
4. 您的应用将立即被杀死(调用 Activity.onDestroy )

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