Question

我设法实现了一个很棒的列表视图，我在这里找到http://www.learn-android.com/2011/11/22/lots-of-lists-custom-adapter/comment-page-1/ 但我似乎无法添加一个onclicklistener 我只是希望能够在单击行时执行操作，当然包含该行包含的数据有任何想法吗？感谢

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.liste);
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    // Setup the list view
    final ListView prestListView = (ListView) findViewById(R.id.list);
    final prestationAdapterEco prestationAdapterEco = new prestationAdapterEco(this, R.layout.prestation);

    prestListView.setAdapter(prestationAdapterEco);

    // Populate the list, through the adapter
    for(final prestationEco entry : getPrestations()) {
        prestationAdapterEco.add(entry);
    }
    prestListView.setClickable(true);
    prestListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
            Object o = prestListView.getItemAtPosition(position);
            String str=(String)o;//As you are using Default String Adapter
            Toast.makeText(getApplicationContext(),str,Toast.LENGTH_SHORT).show();
        }
    });
}

Answer 1

listView.setOnItemClickListener(new OnItemClickListener() {

    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        Object o = prestListView.getItemAtPosition(position);
        prestationEco str = (prestationEco)o; //As you are using Default String Adapter
        Toast.makeText(getBaseContext(),str.getTitle(),Toast.LENGTH_SHORT).show();
    }
});

Answer 2

如果您的活动扩展了ListActivity，您可以简单地覆盖OnListItemClick()方法，如下所示：

/** {@inheritDoc} */
@Override  
protected void onListItemClick(ListView l, View v, int pos, long id) {  
    super.onListItemClick(l, v, pos, id);

    // TODO : Logic
}

Answer 3

list.setOnItemSelectedListener(new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1,
                int arg2, long arg3) {
            // TODO Auto-generated method stub

        }

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

        }
    });

Answer 4

prestListView.getItemAtPosition（position）;返回UI小部件：Text，Icon，...

请改为尝试：

Object o = prestationAdapterEco.getItemAtPosition(position);

或

Object o = arg0.getItemAtPosition(position);

从适配器获取对象。不是从列表视图。

2。对象o是prestationEco对象。不是字符串。

Answer 5

你在做什么

Object o = prestListView.getItemAtPosition(position);
String str=(String)o;//As you are using Default String Adapter

您获得的o不是字符串，而是prestationEco，因此您在执行(String)o

时会获得CCE

Answer 6

试试这个：

    list.setOnItemSelectedListener(new OnItemSelectedListener() {

    @Override
    public void onItemSelected(AdapterView<?> arg0, View arg1,
            int arg2, long arg3)
    }

    @Override
    public void onNothingSelected(AdapterView<?> arg0) {

    }
});

将onclicklistener添加到listview（android）

6 个答案: