如何在Android中处理ListView单击

Question

如何在ListView上收听点击事件？

这就是我现在拥有的

ListView list = (ListView)findViewById(R.id.ListView01);  
...  
list.setAdapter(adapter);  

当我做以下

list.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {  
   public void onItemSelected(AdapterView parentView, View childView, 
                                                         int position, long id) 
   {  
       setDetail(position);  
   }

   public void onNothingSelected(AdapterView parentView) {  

   }  
});  

这似乎没有点击任何事情.
所有这些代码都存在于扩展Activity的类中.

Answer 1

在列表视图中,使用 setOnItemClickListener

Answer 2

假设ListView对象是lv,请执行以下操作 -

lv.setClickable(true);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {

  @Override
  public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {

    Object o = lv.getItemAtPosition(position);
    /* write you handling code like...
    String st = "sdcard/";
    File f = new File(st+o.toString());
    // do whatever u want to do with 'f' File object
    */  
  }
});

Answer 3

您需要在适配器类getView()方法中设置膨胀视图"可单击"和"能够侦听单击事件".

convertView = mInflater.inflate(R.layout.list_item_text, null);
convertView.setClickable(true);
convertView.setOnClickListener(myClickListener);

并在ListActivity中声明单击侦听器,如下所示,

public OnClickListener myClickListener = new OnClickListener() {
public void onClick(View v) {
                 //code to be written to handle the click event
    }
};

仅当您通过扩展BaseAdapter自定义适配器时才适用.

有关详细信息,请参阅ANDROID_SDK/samples/ApiDemos/src/com/example/android/apis/view/List14.java

Answer 4

我之前的两个答案是正确的 - 你可以使用OnItemClickListener.

这是很好的注意,之间的区别OnItemClickListener和OnItemSelectedListener,虽然听上去含蓄,其实显著,为项目选择和重点与您的触摸模式相关AdapterView.

默认情况下,在触摸模式下,没有选择和焦点.您可以在这里查看有关该主题的更多信息.

Answer 5

这个解决方案非常简约,不会弄乱您的代码.

在你的list_item.xml(不是listView!)中分配属性android:onClick,如下所示:

<RelativeLayout android:onClick="onClickDoSomething">

然后在你的活动中调用这个方法:

public void onClickDoSomething(View view) {
   // the view is the line you have clicked on
}

Answer 6

你必须用setOnItemClickListener某人说.
代码应该是这样的:

listView.setOnItemClickListener(new OnItemClickListener() {
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        // When clicked, show a toast with the TextView text or do whatever you need.
        Toast.makeText(getApplicationContext(), ((TextView) view).getText(), Toast.LENGTH_SHORT).show();
    }
});

Answer 7

首先,该类必须实现click listenener:

implements OnItemClickListener

然后将侦听器设置为ListView

yourList.setOnItemclickListener(this);

最后,创建clic方法:

@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Toast.makeText(MainActivity.this, "You Clicked at " +countries[+ position], Toast.LENGTH_SHORT).show();
}

你可以在这里查看和下载代码