SettingsFragment.java 文件源码

@Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
        PreferenceKeys preferenceKeys = new PreferenceKeys(getResources());
        if(key.equals(preferenceKeys.night_mode_pref_key)){
            SharedPreferences themePreferences = getActivity().getSharedPreferences(MainActivity.THEME_PREFERENCES, Context.MODE_PRIVATE);
            SharedPreferences.Editor themeEditor = themePreferences.edit();
            //We tell our MainLayout to recreate itself because mode has changed
            themeEditor.putBoolean(MainActivity.RECREATE_ACTIVITY, true);

            CheckBoxPreference checkBoxPreference = (CheckBoxPreference)findPreference(preferenceKeys.night_mode_pref_key);
            if(checkBoxPreference.isChecked()){
                //Comment out this line if not using Google Analytics
//                app.send(this, "Settings", "Night Mode used");
                themeEditor.putString(MainActivity.THEME_SAVED, MainActivity.DARKTHEME);
            }
            else{
                themeEditor.putString(MainActivity.THEME_SAVED, MainActivity.LIGHTTHEME);
            }
            themeEditor.apply();

            getActivity().recreate();
        }
    }