ListView入門級單擊，長按監聽

原創

2020-02-21 09:36

listactivity

package com.lt.an1609_listview.com.yz.listview;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

import com.lt.an1609_listview.AsyncTask.DownLoadTask;
import com.lt.an1609_listview.MyListViewActivity;
import com.lt.an1609_listview.R;

public class MainActivity extends AppCompatActivity {
    String path = "http://10.0.165.155/MusicServer/loadMusics.jsp";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void doClick(View view) {
        Intent intent = new Intent();
        //switch (view.getId()){
            //case R.id.btn_01:
                //DownLoadTask task =new  //DownLoadTask(this);
                //task.execute(path);
                //break;
            case R.id.my_list://這部分爲listview的
                //跳轉到其他目錄
                intent.setClass(this, MyListViewActivity.class);
                startActivity(intent);
                break;
        }
    }
}

mainactivity

package com.lt.an1609_listview;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;

/**
 * Created by 風情萬種冷哥哥 on 2016/9/29.
 * 監聽器 //單擊的監聽器 mListView.setOnItemClickListener(new
 *         OnItemClickListener() {
 *
 *         AdapterView<?> parent, 適配器組件
 *
 *         View view, 每一個item 視圖
 *
 *         int position, 點擊的視圖位置下標
 *
 *         long id ,視圖的id(忽略)
 *
 *
 * @Override public void onItemClick(AdapterView<?> parent, View view, int
 *           position, long id) { // TODO Auto-generated method stub
 *
 *           } });
 *


}
 */

public class MyListViewActivity extends AppCompatActivity {
    //組件的聲明
    private ListView mListView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my_list);
        //組件初始化
        init();
        //通過數組方式直接綁定了數據--跳過了綁定適配器
        //給listview 監聽器的綁定
        //長按監聽器
        //mListView.setOnLongClickListener();
        //單擊監聽器
        mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                //獲取單擊的值
                String msg = parent.getItemAtPosition(position).toString();
                makeToast(msg);

            }
        });
        //長按監聽器
       mListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener(){

           @Override
           public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
               //獲取單擊的值
               String msg = parent.getItemAtPosition(position).toString();
               makeToast(msg);
               return true;
           }
       });


    }

    //數據的初始化
    private void init() {
        mListView = (ListView) findViewById(R.id.listview_list_lv);

    }
    //創建快顯信息的方法
    private void makeToast(String msg){
        Toast.makeText(this,msg,Toast.LENGTH_SHORT).show();

    }
}

activity-main

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".com.yz.listview.MainActivity">

    <Button
        android:id="@+id/my_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="doClick"
        android:text="listview的監聽" />
</RelativeLayout>


activity_list