无法在DayNight主题中动态切换模式

问题描述

我在我的应用程序中实现了DayNight主题，并添加了在昼夜模式之间切换的设置，但是如果不重新启动，我将无法在模式之间动态切换.

I implemented the DayNight theme in my app and added a setting to switch between day and night mode, but I'm not able to switch between modes dynamically without a restart.

如果在更改设置后使用setDefaultNightMode()，则设置活动不会更改模式，但后堆栈中的活动会更改.如果我另外使用setLocalNightMode()，则将重新创建设置活动并更改其模式，但是现在堆栈中的活动不再.我找不到一种方法来完成这两项工作.有办法吗?

If I use setDefaultNightMode() after the setting has been changed, the settings activity doesn't change mode, but the activities in the backstack do. If I additionally use setLocalNightMode() the settings activity gets recreated and changes its mode, but now the activities in the backstack don't. I could not find a way to accomplish both. Is there a way to do this?

推荐答案

这是 CheeseSquare 存储库位于这里:

private void setNightMode(@AppCompatDelegate.NightMode int nightMode) {
    AppCompatDelegate.setDefaultNightMode(nightMode);

    if (Build.VERSION.SDK_INT >= 11) {
        recreate();
    }
}

这是从V25开始的recreate()的描述.我似乎找不到此调用的其他文档-请注意，它是在V11中添加的.

Here is the description of recreate() as of V25. I can't seem to find other documentation for this call - note that it was added at V11.

/* Cause this Activity to be recreated with a new instance.  This results
 * in essentially the same flow as when the Activity is created due to
 * a configuration change -- the current instance will go through its
 * lifecycle to {@link #onDestroy} and a new instance then created after it.
 */

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