如何在每项活动中使黑暗模式 [英] How to make dark mode in every activity

问题描述

当我单击夜间模式按钮时，它仅适用于设置活动，而其他活动不是夜间模式.

When I click night mode button it only apply in settings activity but other activities are not night mode.

This is xml
<Switch
        android:id="@+id/switch_button"
        android:layout_marginStart="10dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/night"/>

This is SettingsActivity
Switch aSwitch = findViewById(R.id.switch_button);
    aSwitch.setOnCheckedChangeListener((compoundButton, isChecked) -> {
        if (isChecked) {
            getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_YES);
        }
        else
        {
            getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_NO);
        }
    });

当我关闭应用程序并再次打开时，夜间模式也不会保存.该怎么做?

And also when I close app and open again, night mode is not saved. How to do that?

推荐答案

尝试一下:

1. 确保活动扩展了AppCompatActivity.

1. Make sure that the activities extends AppCompatActivity.

您的主题必须使用Theme.AppCompat.DayNight，因此您应将主主题或AppTheme设置为DayNight:

Your theme must use Theme.AppCompat.DayNight therefore you should set your main theme or AppTheme to DayNight:

<style name="AppTheme" parent="Theme.AppCompat.DayNight">

在AndroidManifest中将活动"的主题设置为:

Set the theme of your Activities in your AndroidManifest to:

android:theme="@style/AppTheme"

或使用Theme.AppCompat.DayNight的任何主题

or any theme that uses Theme.AppCompat.DayNight

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