本文实例为大家分享了android listview列表展示效果的具体代码，供大家参考，具体内容如下
1.封装一些新闻数据
2.使用listview展示出来
3.设置条目点击事件,点击后跳转浏览器查看新闻
package com.itheima74.newscustom.domain;
import android.graphics.drawable.Drawable;
/**
* Created by My on /11/8.
*/
public class NewsBean {
public String title;
public String des;
public Drawable icon;
public String news_url;
}
package com.itheima74.newscustom.utils;
import android.content.Context;
import com.itheima74.newscustom.R;
import com.itheima74.newscustom.domain.NewsBean;
import java.util.ArrayList;
/**
* Created by My on /11/8.
*/
public class NewsUtils {
/**
* @param context 上下文环境
* @return 新闻集合
*/
public static ArrayList getAllNews(Context context) {
ArrayList arrayList = new ArrayList<>();
for (int i = 0; i < 5; i++) {
NewsBean newsBean1 = new NewsBean();
newsBean1.title = "鸟瞰暴雨后的武汉 全市已转移16万人次";
newsBean1.des = "7月5-6日，武汉普降暴雨-大暴雨，中心城区、蔡甸部分地区出现特大暴雨。江夏大道汤逊湖大桥段，被湖水冲破的路障。记者贾代腾飞 陈卓摄";
newsBean1.icon = context.getResources().getDrawable(R.drawable.wuhan);
newsBean1.news_url = "http://slide./s/slide_1_2841_101020.html#p=1";
arrayList.add(newsBean1);
NewsBean newsBean2 = new NewsBean();
newsBean2.title = "安徽暴雨 三四十条鳄鱼逃至附近农田";
newsBean2.des = "因强降雨造成内涝，安徽省芜湖市芜湖县花桥镇鳄鱼湖农庄所养鳄鱼逃跑至附近农田。。据悉，溜出来的鳄鱼为散养的扬子鳄，比较温驯。初步预计有三四十条，具体数量未统计，其中最大的约1.8米长。图为网友拍摄到的农田中的鳄鱼。";
newsBean2.icon = context.getResources().getDrawable(R.drawable.eyu);
newsBean2.news_url = "http://slide./s/slide_1_2841_101024.html#p=1";
arrayList.add(newsBean2);
NewsBean newsBean3 = new NewsBean();
newsBean3.title = "暴雨过后 南京理工大学变“奇幻森林”";
newsBean3.des = "近日，持续强降雨，导致地势低洼的南京理工大学出现严重积水。这一组几张照片，南理工恍若童话世界中。网友：泡在水中的南理工，也可以倔强地刷出颜值新高度。";
newsBean3.icon = context.getResources().getDrawable(R.drawable.qihuan);
newsBean3.news_url = "http://slide./s/slide_1_2841_101010.html#p=1";
arrayList.add(newsBean3);
}
return arrayList;
}
}
package com.itheima74.newscustom.activity;
import android.content.Intent;
import .Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import com.itheima74.newscustom.R;
import com.itheima74.newscustom.domain.NewsBean;
import com.itheima74.newscustom.utils.NewsUtils;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
private ListView lv;
private ArrayList mList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initUI();
initData();
initAdapter();
}
private void initAdapter() {
lv.setAdapter(new NewsAdapter());
}
private void initData() {
mList = NewsUtils.getAllNews(this);
}
private void initUI() {
lv = (ListView) findViewById(R.id.lv);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView> parent,View view,int position,long id) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setData(Uri.parse(mList.get(position).news_url));
startActivity(intent);
}
});
}
private class NewsAdapter extends BaseAdapter {
@Override
public int getCount() {
return mList.size();
}
@Override
public NewsBean getItem(int position) {
return mList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position,View convertView,ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = View.inflate(getApplicationContext(),R.layout.listview_item,null);
holder.tv_title = (TextView) convertView.findViewById(R.id.tv_title);
holder.tv_des = (TextView) convertView.findViewById(R.id.tv_des);
holder.iv_icon = (ImageView) convertView.findViewById(R.id.iv_icon);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
NewsBean item = getItem(position);
holder.tv_title.setText(item.title);
holder.tv_des.setText(item.des);
holder.iv_icon.setImageDrawable(item.icon);
return convertView;
}
}
private static class ViewHolder {
TextView tv_title;
TextView tv_des;
ImageView iv_icon;
}
}
listview_item.xml:
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="horizontal"
android:padding="10dp">
android:id="@+id/iv_icon"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginEnd="10dp"
android:layout_marginRight="10dp"
android:src="@mipmap/ic_launcher" />
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
android:id="@+id/tv_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="3dp"
android:maxLines="1"
android:text="新闻标题"
android:textColor="#000000"
android:textSize="16sp" />
android:id="@+id/tv_des"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:maxLines="2"
android:text="新闻内容"
android:textColor="#666666"
android:textSize="13sp" />
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程小技巧。
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