SwitchPreference棒棒糖中的回调行为改变

时间:2015-06-18 04:30:52

标签: android android-5.0-lollipop preferences android-5.1.1-lollipop

enter image description here

在我们的项目中,我们使用的SwitchPreference类似于wifi settings.user可以通过点击切换按钮来切换值,用户可以通过点击标题查看更多选项。

但这不适用于棒棒糖。我可以在棒棒糖中看到一些行为改变。

在kitkat:

当用户点击切换按钮时,会调用 onPreferenceChanged 回调,当用户点击标题时,会调用 onPreferenceClicked

在棒棒糖中: 您点击切换按钮或标题 onPreferenceClicked 始终被调用,然后调用 onPreferenceChanged 。 如何在棒棒糖中获得相同的行为?这种行为打破了我们的功能。

2 个答案:

答案 0 :(得分:1)

我遇到同样的问题,我发现了这个问题:https://code.google.com/p/android/issues/detail?can=2&start=0&num=100&q=&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars&groupby=&sort=&id=172425

经过一番尝试后,我发现了如何实现适用于我的案例的解决方法:

public class MySwitchPreference extends SwitchPreference {

/**
 * Construct a new SwitchPreference with the given style options.
 *
 * @param context The Context that will style this preference
 * @param attrs Style attributes that differ from the default
 * @param defStyle Theme attribute defining the default style options
 */
public MySwitchPreference(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}

/**
 * Construct a new SwitchPreference with the given style options.
 *
 * @param context The Context that will style this preference
 * @param attrs Style attributes that differ from the default
 */
public MySwitchPreference(Context context, AttributeSet attrs) {
    super(context, attrs);
}

/**
 * Construct a new SwitchPreference with default style options.
 *
 * @param context The Context that will style this preference
 */
public MySwitchPreference(Context context) {
    super(context, null);
}

@Override
protected void onBindView(View view) {
    ViewGroup viewGroup= (ViewGroup)view;
    setSwitchClickable(viewGroup);
    super.onBindView(view);
}

private void setSwitchClickable(ViewGroup viewGroup) {
      if (null == viewGroup) {
      return;
  }

  int count = viewGroup.getChildCount();
  for(int n = 0; n < count; ++n) {
      View childView = viewGroup.getChildAt(n);
      if(childView instanceof Switch) {
          final Switch switchView = (Switch) childView;
          switchView.setClickable(true);
          return;
      } else if (childView instanceof ViewGroup){
        ViewGroup childGroup = (ViewGroup)childView;
        setSwitchClickable(childGroup);
      }
  }

}

然后你只需要使用你自己的&#34; MySwitchPreference&#34;直接进入SwitchPreference。

答案 1 :(得分:0)

作为一种解决方法,我创建了自定义SwitchPreference类

public class CustomSwitchPreference extends SwitchPreference {
public CustomSwitchPreference(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}

public CustomSwitchPreference(Context context, AttributeSet attrs) {
    super(context, attrs);
}

public CustomSwitchPreference(Context context) {
    super(context);
}
 @Override
    protected View onCreateView(ViewGroup parent) {
        View view =  super.onCreateView(parent);
 LinearLayout switchView =  (LinearLayout) ((LinearLayout) view).getChildAt(2);
switchView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final boolean newValue = !isChecked();
                if (callChangeListener(newValue)) {
                    setChecked(newValue);
                }
            }
        });
}

看起来很脏但是为我工作。