微调：当选择的项目是一样的onItemSelected不叫 [英] Spinner : onItemSelected not called when selected item remains the same

问题描述

我有一个 OnItemSelectedListener 我的微调，但是当所选择的项目是一样的，因为它不叫在previous之一。显然， OnClickListener 不是一个微调选项。 我需要赶上每次一个项目一个用户的点击。你知道吗？

也许是事实，这微调里面的动作条扰乱了正常的行为？

  @覆盖
公共无效onCreateOptionsMenu（功能菜单，MenuInflater充气）{
    inflater.inflate（R.menu.tracklist_menu，菜单）;
    微调微调=（微调）menu.findItem（R.id.option_ordering_spinner）
            .getActionView（）;
    spinner.setAdapter（mSpinnerAdapter）;
    spinner.setSelection（prefsHelper.getOrderingSpinnerPos（preFS））;
    spinner.setOnItemSelectedListener（新OnItemSelectedListener（）{

        @覆盖
        公共无效onItemSelected（适配器视图＆LT;＆GT;母公司视图中查看，
                INT位置，长的id）{
            字符串str =选择;
            的System.out.println（STR）;
            如果（optionMenuInitialized）{

                开关（位置）{
                情况下0：
                    // RDM
                    getActivity（）
                            .sendBroadcast（
                                    新的意向（
                                            MyIntentAction.DO_RESHUFFLE_PLAYLIST））;
                    smp.setCurrentTracklistCursorPos（-1）;
                    trackAdapter.notifyDataSetChanged（）;
                    打破;
                情况1：
                    // 艺术家
                    getActivity（）
                            .sendBroadcast（
                                    新的意向（
                                            MyIntentAction.DO_ORDER_PLAYLIST_BY_ARTIST））;
                    smp.setCurrentTracklistCursorPos（-1）;
                    trackAdapter.notifyDataSetChanged（）;
                    打破;
                案例2：
                    // 夹
                    getActivity（）
                            .sendBroadcast（
                                    新的意向（
                                            MyIntentAction.DO_ORDER_PLAYLIST_BY_FOLDER））;
                    smp.setCurrentTracklistCursorPos（-1）;
                    trackAdapter.notifyDataSetChanged（）;
                    打破;
                }
                prefsHelper.setOrderingSpinnerPos（prefEditor，位置）;
                prefEditor.commit（）;
            }
            optionMenuInitialized = TRUE;
        }

        @覆盖
        公共无效onNothingSelected（适配器视图＆LT;＆GT;母公司）{
        }
    }）;
}
 

解决方案

好吧，我终于找到了一个解决方案，通过创建自己的类扩展微调：

 公共类MySpinner扩展微调{
OnItemSelectedListener监听;

公共MySpinner（上下文的背景下，ATTRS的AttributeSet）{
    超（背景下，ATTRS）;
}

@覆盖
公共无效setSelection（INT位置）{
    super.setSelection（位置）;
    如果（听众！= NULL）
        listener.onItemSelected（NULL，NULL，位置，0）;
}

公共无效setOnItemSelectedEvenIfUnchangedListener（
        OnItemSelectedListener监听器）{
    this.listener =侦听器;
}
}
 

I have a OnItemSelectedListener for my Spinner, but it is not called when the selected item is the same as the previous one. Apparently the OnClickListener is not an option for a Spinner. I need to catch everytime a user click on an item. Any idea?

Maybe the fact that this Spinner is inside the ActionBar disturbs normal behavior?

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.tracklist_menu, menu);
    Spinner spinner = (Spinner) menu.findItem(R.id.option_ordering_spinner)
            .getActionView();
    spinner.setAdapter(mSpinnerAdapter);
    spinner.setSelection(PrefsHelper.getOrderingSpinnerPos(prefs));
    spinner.setOnItemSelectedListener(new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> parent, View view,
                int position, long id) {
            String str = "selected";
            System.out.println(str);
            if (optionMenuInitialized) {

                switch (position) {
                case 0:
                    // rdm
                    getActivity()
                            .sendBroadcast(
                                    new Intent(
                                            MyIntentAction.DO_RESHUFFLE_PLAYLIST));
                    smp.setCurrentTracklistCursorPos(-1);
                    trackAdapter.notifyDataSetChanged();
                    break;
                case 1:
                    // artist
                    getActivity()
                            .sendBroadcast(
                                    new Intent(
                                            MyIntentAction.DO_ORDER_PLAYLIST_BY_ARTIST));
                    smp.setCurrentTracklistCursorPos(-1);
                    trackAdapter.notifyDataSetChanged();
                    break;
                case 2:
                    // folder
                    getActivity()
                            .sendBroadcast(
                                    new Intent(
                                            MyIntentAction.DO_ORDER_PLAYLIST_BY_FOLDER));
                    smp.setCurrentTracklistCursorPos(-1);
                    trackAdapter.notifyDataSetChanged();
                    break;
                }
                PrefsHelper.setOrderingSpinnerPos(prefEditor, position);
                prefEditor.commit();
            }
            optionMenuInitialized = true;
        }

        @Override
        public void onNothingSelected(AdapterView<?> parent) {
        }
    });
}

解决方案

Ok, I finally found a solution, by creating my own class extending Spinner :

public class MySpinner extends Spinner {
OnItemSelectedListener listener;

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

@Override
public void setSelection(int position) {
    super.setSelection(position);
    if (listener != null)
        listener.onItemSelected(null, null, position, 0);
}

public void setOnItemSelectedEvenIfUnchangedListener(
        OnItemSelectedListener listener) {
    this.listener = listener;
}
}

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