如何写在Android中的ListView onclick事件？ [英] How to write onclick event for ListView in Android?

问题描述

您好我有ListView控件在它sixitems，但是当我呼吁事件ALET功能，它不工作？让我知道如何写一篇关于项目事件的函数上的点击？

 公共类PhotoListView扩展ListActivity {
     的String [] = listItems中{爆头，BodyShot，ExtraShot，视频Take1，视频TAKE2，视频Take3};
    @覆盖
     公共无效的onCreate（捆绑savedInstanceState）{
         super.onCreate（savedInstanceState）;
         的setContentView（R.layout.main）;
         setListAdapter（新ArrayAdapter（这一点，android.R.layout.simple_list_item_1，listItems中））;
     }
 

OnListclick

 的ListView射击= getListView（）;
  保护无效onListItemClick（查看视图）{    如果（查看==射击）{        AlertDialog.Builder alertbox =新AlertDialog.Builder（本）;        //设置为显示该消息
          alertbox.setMessage（请做好准备）;    }
 

解决方案

ListView的射击= getListView（）;

在射击你有id为列表视图，而不是对列表中的每个项目。

  @覆盖
    保护无效onListItemClick（ListView中升，视图V，INT位置，长的id）{
        // TODO自动生成方法存根
        super.onListItemClick（L，V，位置ID）; AlertDialog.Builder alertbox =新AlertDialog.Builder（本）;        //设置为显示该消息
          alertbox.setMessage（请做好准备）显示（）。    }
 

或者你可以使用的ListView :: setOnItemClickListener

 公共类PhotoListView扩展ListActivity实现OnItemClickListener
ListView的投篮= getListView（）;
        shot.setOnItemClickListener（本）;
@覆盖
    公共无效onItemClick（适配器视图＆LT;＆GT;为arg0，ARG1观，诠释ARG2，长ARG3）{
        AlertDialog.Builder alertbox =新AlertDialog.Builder（本）;    //设置为显示该消息
      alertbox.setMessage（请做好准备）显示（）。
    }
 

Hi i have the listview the sixitems in it, but when i call alet function on event it doesnt work ? let me know how to write a function on item event on click?

     public class PhotoListView extends ListActivity {
     String[] listItems = {"HeadShot", "BodyShot ", "ExtraShot", "Video Take1", "Video Take2", "Video Take3", }; 
    @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         setListAdapter(new ArrayAdapter(this,android.R.layout.simple_list_item_1, listItems));
     }

OnListclick

  ListView Shot = getListView();
  protected void onListItemClick(View view) {

    if(view == Shot){

        AlertDialog.Builder alertbox = new AlertDialog.Builder(this);

        // set the message to display
          alertbox.setMessage("Please Get Ready");

    }    

解决方案

ListView Shot = getListView();

In Shot you have the id for the listview and not for each item in the list.

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        // TODO Auto-generated method stub
        super.onListItemClick(l, v, position, id);

 AlertDialog.Builder alertbox = new AlertDialog.Builder(this);

        // set the message to display
          alertbox.setMessage("Please Get Ready").show();

    }

Or you could use ListView::setOnItemClickListener

public class PhotoListView extends ListActivity implements OnItemClickListener


ListView shot = getListView();
        shot.setOnItemClickListener(this);


@Override
    public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
        AlertDialog.Builder alertbox = new AlertDialog.Builder(this);

    // set the message to display
      alertbox.setMessage("Please Get Ready").show();


    }

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