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我的片段中有这个

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
        getListView().setMultiChoiceModeListener(new PlayerMultiChoiceListener(getListView(), getBaseActivity()));
        ...    
    }

这就是实现

public abstract class PlayerMultiChoiceListener implements MultiChoiceModeListener {

    protected final ListView listView;
    protected final BaseActivity activity;
    protected final PlayerManager playerManager;

    public AbstractMultiChoiceListener(ListView listView, BaseActivity activity) {
        this.listView = listView;
        this.activity = activity;
        this.playerManager = PlayerManager.getInstance(activity);
    }

    ...

    @Override
    public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
        mode.setTitle(listView.getCheckedItemCount() + activity.getString(R.string.action_mode_title_selected));
        mode.getMenu().clear();
        if (listView.getCheckedItemCount() > 1) {
            mode.getMenuInflater().inflate(R.menu.list_actionmode, mode.getMenu());
        } else {
            mode.getMenuInflater().inflate(R.menu.list_actionmode_one_selected, mode.getMenu());
        }
        listView.getChildAt(position).setBackgroundResource(
                checked ? android.R.color.holo_blue_light : android.R.color.transparent);
    }

}

第一个选择的项目（我长按进入 ActionMode 的那个）没有被holo_blue_light. 它被标记为选中，并且更改背景的代码被执行但没有任何效果。下一个选定的项目被突出显示就好了。有任何想法吗？

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0 回答 0