传递ListView项的ID来ActionMode.Callback对象 [英] Passing id of ListView item to ActionMode.Callback object

问题描述

所以现在我的问题是，现在我长点击它会弹出一个上下文操作栏一个ListView的项目。传递到onItemLongClick ID是我想在mActionModeCallback的使用上ActionItemClicked（）方法中的变量。这似乎是这将是一个相当普遍的方法，因为如果一个用户正在编辑的项目列表，你想访问该行的id在数据库不知何故，当用户点击编辑或删除操作。

  listView.setOnItemLongClickListener（新OnItemLongClickListener（）{
    公共布尔onItemLongClick（适配器视图＆LT;指p，观景，INT POS，长I​​D）{        //行的数据库中的ID
        长variableThatIWantToPassToCallback = ID;
        mActionMode = getActivity（）startActionMode（mActionModeCallback）。
        view.setSelected（真）;
        返回true;
    }
}）;私人ActionMode.Callback mActionModeCallback =新ActionMode.Callback（）{    公共布尔onCreateActionMode（ActionMode模式，菜单菜单）{}    在prepareActionMode公共布尔（ActionMode模式，菜单菜单）{}    公共布尔onActionItemClicked（ActionMode模式，菜单项项）{
        //我想访问点击项目的ID在这里，不item.getItemId（）
    }    公共无效onDestroyActionMode（ActionMode模式）{}
};
 

解决方案

要做到这一点，正确的方法是调用 mActionMode.setTag（1）在 onItemCheckedStateChanged ，然后从 onActionItemClicked 函数调用 mode.getTag（）;

So my problem right now is that right now I am long clicking an item in a ListView which brings up a contextual action bar. The id passed into onItemLongClick is the variable that I would like to use in the mActionModeCallback's on ActionItemClicked() method. This seems like it would be a fairly common procedure since if a user is editing a list of items, you would want to access the id of that row in the database somehow when the user clicked an "edit" or a "delete" action.

listView.setOnItemLongClickListener(new OnItemLongClickListener() {
    public boolean onItemLongClick(AdapterView<?> p, View view, int pos, long id) {

        //The id of the row in the database
        long variableThatIWantToPassToCallback = id; 
        mActionMode = getActivity().startActionMode(mActionModeCallback);
        view.setSelected(true);
        return true;
    }
});

private ActionMode.Callback mActionModeCallback = new ActionMode.Callback() {

    public boolean onCreateActionMode(ActionMode mode, Menu menu) {}

    public boolean onPrepareActionMode(ActionMode mode, Menu menu) {}

    public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
        //I would like access to the id of the clicked item here, NOT item.getItemId()
    }

    public void onDestroyActionMode(ActionMode mode) {}
};

解决方案

The proper way to do this is to call mActionMode.setTag("1") in onItemCheckedStateChanged and then from the onActionItemClicked function call mode.getTag();

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