Java android复选框首选项获取和设置布尔值

我是android的初学者，我尝试制作一个带有偏好活动的简单手电筒应用程序。所以我的问题是,；我想使灯光和声音设置是可选的复选框

settings.xml

  <PreferenceCategory
     android:title="@string/sct_behaviour">

     <CheckBoxPreference
       android:key="pref_light"
       android:title="@string/st_pref_light"
       android:summary="@string/ss_pref_light"
       android:defaultValue="true"
       />
    <CheckBoxPreference
       android:key="pref_switch_sound"
       android:title="@string/st_pref_sound"
       android:summary="@string/ss_pref_sound"
       android:defaultValue="true"
       />
    <CheckBoxPreference
       android:key="pref_notification_sound"
       android:title="@string/st_pref_notification_sound"
       android:summary="@string/ss_pref_notification_sound"
       android:defaultValue="true"
       />

我的闪光灯功能

 private void turnOnFlash() {
    if (!isFlashOn) {
        if (camera == null || params == null) {
            return;
        }

        params = camera.getParameters();
        params.setFlashMode(Parameters.FLASH_MODE_TORCH);
        camera.setParameters(params);
        camera.startPreview();
        isFlashOn = true;

        // changing button/switch image
        toggleButtonImage();

     // play sound
        playSound();
    }
}

启动函数

@Override
protected void onStart() {
    super.onStart();
    if(VERBOSE) Log.v(TAG, "++ ON START ++");
    // on starting the app get the camera params
    getCamera();
turnOnFlash(value);
}

---

我想根据用户的选择将此真值或假值设置为onStart cycle。我不知道如何实现这一点

如果我理解正确，您应该在Resume（）上获取首选项并相应地采取行动：

protected void onResume() {
    super.onResume();
    if(VERBOSE) Log.v(TAG, "++ ON START ++");
    // on starting the app get the camera params

    SharedPreferences prefs =   PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
    boolean lightPref = prefs.getBoolean("pref_light", true);
    getCamera();
    turnOnFlash(lightPref);
}

---

我认为你应该使用；单击侦听器

    Preference pLight = (Preference)findPreference("pref_light");
    Preference pSwitchSound = (Preference)findPreference("pref_switch_sound");
    Preference pNotificationSound = (Preference)findPreference("pref_notification_sound");

    pLight.setOnPreferenceClickListener(this);
    pSwitchSound.setOnPreferenceClickListener(this);
    pNotificationSound.setOnPreferenceClickListener(this);

    Preference pLight = (Preference)findPreference("pref_light");
    Preference pSwitchSound = (Preference)findPreference("pref_switch_sound");
    Preference pNotificationSound = (Preference)findPreference("pref_notification_sound");

    pLight.setOnPreferenceClickListener(this);
    pSwitchSound.setOnPreferenceClickListener(this);
    pNotificationSound.setOnPreferenceClickListener(this);