ListView中的ItemView

Question

我有一个带有ListView的布局。在onCreate（）中我将Adapter设置为ListView，以显示列表，这工作正常。

但我尝试像这样访问listview的ItemView。

https://stackoverflow.com/a/2679284/1149815

public class MainActivity extends Activity {

private ListView listView;  

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    listView = (ListView)findViewById(R.id.listView1); 
    listView.setAdapter(new TestAdapter(this, getLayoutInflater()));

    int wantedPosition = 1; 
    int firstPosition = listView.getFirstVisiblePosition() - listView.getHeaderViewsCount(); // This is the same as child #0
    int wantedChild = wantedPosition - firstPosition;

    if (wantedChild < 0 || wantedChild >= listView.getChildCount()) {
      Log.w("--", "Unable to get view");
    }

    View wantedView = listView.getChildAt(wantedChild);

    Log.i("--","" +( wantedView == null) + "");
}}

我需要访问wantedView，有人可以帮助我吗？

LogCat说：

- ＆＃34;无法获得视图

- 是的

感谢名单

Answer 1

将以int wantedPosition = 1及更低版本开头的代码移动到设置适配器后发布的Runnable：listview.post（runnable）