如何从列表视图中的选定项目获取值？

Question

这是我的代码到目前为止。这是工作，但它只显示我在listView中的第一个值，而不是用户选择的项目。请用这个来激励我。这非常重要。

 unitListView.setChoiceMode(AbsListView.CHOICE_MODE_SINGLE); 

      unitListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
       public void onItemClick(AdapterView<?> parent, View view, 
           int position, long id) { 

        // selected item 
       TextView t1 = (TextView) findViewById(R.id.lblLUnitName); 

       String name=t1.getText().toString(); 

      // String a= (String) unitListView.getItemAtPosition(position); 

         // touchpressed=position; 
        Toast.makeText(getApplicationContext(), "Selected Item :" +name, Toast.LENGTH_SHORT).show(); 

     } 
    }); 

Answer 1

查看只是为了显示UI上的一些值。如果您想获得实际的价值，请使用position从您的ListAdapter中获取价值。

@Override 
public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
    YourItemClass item = (YourItemClass)listAdapter.getItem(position); 
    //[...] 
} 

另一种方法是从你的unitListView直接拿到ListAdapter：

@Override 
public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
    Object item = unitListView.getAdapter().getItem(position); 
    //[...] 
} 

Answer 2

更新你的代码如下，并尝试;

 unitListView.setChoiceMode(AbsListView.CHOICE_MODE_SINGLE); 
     unitListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
      public void onItemClick(AdapterView<?> parent, View view,int position, long id) { 

      TextView t1 = (TextView) findViewById(R.id.lblLUnitName); 
      String name=String.valuesOf(position); 
      Toast.makeText(getApplicationContext(), "Selected Item :" +name, Toast.LENGTH_SHORT).show(); 

    } 
}); 

Answer 3

替换
TextView t1 = (TextView) findViewById(R.id.lblLUnitName);

通过

TextView t1 = (TextView) view.findViewById(R.id.lblLUnitName);