App.java 文件源码

@Override
public void onCreate() {
    super.onCreate();

    // the 'theme' has two values, 0 and 1
    // 0 --> day theme, 1 --> night theme
    if (getSharedPreferences("user_settings",MODE_PRIVATE).getInt("theme", 0) == 0) {
        AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
    } else {
        AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
    }
}