Android自定义列表视图，setOnItemSelectedListener不起作用 [英] Android custom listview, setOnItemSelectedListener not working

问题描述

我刚刚开始Android开发，并且我正在努力获得一个带有复选框的自定义列表视图.我创建了一个扩展 Activity 的基类，创建了一个Adapter并覆盖了getView()方法以将复选框添加到列表视图.我假设我需要这样做，因为我需要与Obj C中的didSelectRowIndexAtPath等效的东西来更新我的模型.请让我知道是否还有另一种方法！

I'm just beginning Android development, and I'm working to get a Custom listview with a checkbox working. I've created a base class that extends Activity, Created an Adapter and overrode the getView() method to add the checkbox to the listview. I'm assuming I need to do this because I need something equivalent to didSelectRowIndexAtPath from Obj C to update my model. Please let me know if there's an alternate way of doing this too!

现在在我的基类中，我有以下代码-

Now in my base class, I have the following code -

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //setContentView(R.layout);
    setContentView(R.layout.facilityscreen);

    /* Static Data source */
    facilityModel = new FacilityDataModel[2];

    facilityModel[0] = new FacilityDataModel();
    facilityModel[1] = new FacilityDataModel();


    facilityModel[0].setFacilityName("Test 1");
    facilityModel[0].setFacilityID("Facid0001");
    facilityModel[0].setChecked(false);


    facilityModel[1].setFacilityName("Test 2");
    facilityModel[1].setFacilityID("Facid0002");
    facilityModel[1].setChecked(true);


    facilityListView = (ListView) findViewById(R.id.facilityListView);

    FacilityScreenAdapter adapter = new FacilityScreenAdapter(this, facilityModel);

    facilityListView.setAdapter(adapter);    

    myPatBtn = (Button) findViewById(R.id.myPatBtn);
    myPatBtn.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            int i=0;
            i++;
        }});

    facilityListView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1,
                int arg2, long arg3) {
            int i=0;
            i++;

        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
            // TODO Auto-generated method stub
        }
    });

}    

我现在的问题是根本没有调用setOnItemSelectedListener.现在已经为此苦苦挣扎了两个小时，我不知道为什么根本不会调用它.

My problem now is the setOnItemSelectedListener isn't getting called at all. Been struggling with this for a couple of hours now, and I can't figure out why it wouldn't get called at all.

非常感谢您的帮助！

谢谢，
Teja.

Thanks,
Teja.

推荐答案

我知道这是一个过时的答案，但是我打算写这个，以防其他一些具有相同问题"的人碰到这个页面:

I know this is an outdated answer but I'm going to write it just in case some other fellow who has the same "problem" bumps onto this page :

上述问题的解决方案不是问题，只是一个误会，它是在触发ListView.onItemSelected()事件时出现的:

The solution to the above problem which is not a problem but just a misunderstanding is that the ListView.onItemSelected() event is fired up, upon :

1)浏览模拟器交叉手柄或 2)就我的HTC-Hero而言，白色小滚球上的滚动动作.

1) Navigating through the emulators-cross handles or 2) as far-as my HTC-Hero is concerned, the rolling-action on the white little roller-ball.

您不必将活动明确地扩展到ListActivity.

You don't have to extend your activity explicitly to a ListActivity.

这是我的小代码，可从中检索电话号码 Listview项内的TextView控件. 当用户触摸列表项或使用

Here's my tiny little code which retrieves a phone number from a TextView control, inside a listview item. When the user either touches the list item or scrolls through the list with

myList.setOnItemClickListener(new OnItemClickListener() 
        {
            public void onItemClick(AdapterView<?> parent, View view, int position, long i) 
            {
                TextView myPhone = (TextView)view.findViewById(R.id.txtphone);
                MakeACall(myPhone.getText().toString());        
            }
        });

        myList.setOnItemSelectedListener(new OnItemSelectedListener() 
        {
            public void onItemSelected(AdapterView<?> parent, View view, int position, long i) 
            {
                TextView myPhone = (TextView)view.findViewById(R.id.txtphone);
                MakeACall(myPhone.getText().toString());
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
                // TODO Auto-generated method stub

            }
        });

我希望这对您有所帮助...:)

I hope that was helpful... :)

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