调度点击ListView的活动时实现OnTOuchListener [英] Dispatch click to ListView when activity implements OnTOuchListener

问题描述

我的活动实现OnTouchListener，它里面有只有在一个ListView控件。
当在ListView的用户联系，我需要派遣ClickEvent到具有OnItemClickListener处理程序的ListView。

My activity implements OnTouchListener and it have one ListView inside it. When user touch over ListView, I need to dispatch ClickEvent to ListView that has OnItemClickListener handler.

我怎样才能做到这一点？

How can I do this?

编辑：

的ListView每个列表项有onTouchEvent的处理程序。
ListView控件有onItemClick处理程序。

Each list item of listView have onTouchEvent handler. ListView have onItemClick handler.

  @Override
    public boolean onTouch(View view, MotionEvent event) {
        float actionUpX;

        switch(event.getAction()){

        case MotionEvent.ACTION_DOWN:
            actionDownX = event.getX();
            break;

        case MotionEvent.ACTION_UP:
            actionUpX = event.getX();

            mFlipper = (ViewFlipper) view.findViewById(R.id.view_listitem_flipper);


            if(actionDownX < actionUpX){
                // |--->
                mFlipper.showNext();                
            } else if(actionDownX > actionUpX){
                // <---|
                mFlipper.showPrevious();
            } else {
                    //Click
                    //Need to dispatch itemClickEvent to ListView

                    //view.performClick();  this line causes StackOverflowException 
                    }
            break;
        }
        return true;
    }

@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
        long id) {
    //Need do an action using position of view

}

我的列表项为ViewFlipper，当用户触摸和拖动项目，ViewFlipper需要执行
showNext或显示previous和一个单一的点击已经被onItemClick处理

My list item is a ViewFlipper, when user touch and drag item, ViewFlipper need perform showNext or ShowPrevious and an single click have to handled by onItemClick

推荐答案

如果您希望能够单击一个项目在列表中，有一些事情发生，你需要做类似如下：

If you want to be able to click on an item in the list and have something happen you need to do something like the following:

public class YourClass extends ListActivity {
    //Your Variables
    ArrayList<Type> yourlist;
    YourAdapterClass adapter;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        yourlist = new ArrayList<Type>();
        this.adapter = new YourAdapterClass(this, R.layout.row, yourlist);
        setListAdapter(this.adapter);

        //you might be able to see if the below works instead of overriding 
        //the OnListItemClickListener farther below
        ListView lv = getListView();

        lv.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View view,
                                    int position, long id) {
                Log.i("testy", "I Clicked on Row " + position + " and it worked!");
             }
         });
    }

    @Override
    /**
     * When the user selects an item in the list, do an action
     * @param ListView l
     * @param View v
     * @param int position
     * @param long id
     */
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);

        final int index = position;

        //You can add whatever you want to happen when you click here

        Log.i("testy", "I Clicked on Row " + index + " and this overriding worked!");

    }

//other methods can go here for you list


}

您还需要一个适配器类（在我的例子中我的适配器类叫做 YourAdapterClass ），则可以使这个私有类在ListActivty或一个完全新的类像下面它自己的Java文件：

You will also need an adapter class (in my example my adapter class is called YourAdapterClass) You can either make this a private class in your ListActivty or a completely new class in its own Java file like the following:

public class YourAdapterClass extends ArrayAdapter {
        protected ArrayList items;

        public YourAdapterClass(Context context, int textViewResourceId, ArrayList items) {
            super(context, textViewResourceId, items);
            this.items = items;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View v = convertView;

            if(v == null) {
                LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                v = vi.inflate(R.layout.row, null);
            }

          //do stuff to your list view row if it is a custom row with multiple 
          //components like text views, image views etc.

            return v;


       }
}

用于自定义列表视图

通常这种方式（使用定制的行列表，但你可以使用它的一个普通视图以及）

Usually this way is used for custom ListViews (lists with custom made rows, but you can use it for a normal view as well)

希望这有助于你至少在正确的方向开始。

Hope this helps you at least get started in the right direction.

好运。

（这是一个答案，我基本放弃了与此类似自定义的ListView另一个线程和的onclick ）

(this was an answer I basically gave for another thread similar to this one Custom ListVIew and onclick)

这篇关于调度点击ListView的活动时实现OnTOuchListener的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！