package com.hanqi.testapp2;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
public class TestActivity9 extends AppCompatActivity {
ListView lv_3;
List<MyClass> lm;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test9);
lv_3=(ListView)findViewById(R.id.lv_3);
//数据集合
lm=new ArrayList<>();
MyClass myClass=new MyClass(R.drawable.f1,"美食1","美食1的介绍");
lm.add(myClass);
lm.add(new MyClass(R.drawable.f2,"美食2","美食2的介绍"));
lm.add(new MyClass(R.drawable.f3,"美食3","美食3的介绍"));
lm.add(new MyClass(R.drawable.f4,"美食4","美食4的介绍"));
lm.add(new MyClass(R.drawable.f5,"美食5","美食5的介绍"));
lm.add(new MyClass(R.drawable.f6,"美食6","美食6的介绍"));
lm.add(new MyClass(R.drawable.f7,"美食7","美食7的介绍"));
lm.add(new MyClass(R.drawable.f8,"美食8","美食8的介绍"));
MyBaseAdapter myBaseAdapter=new MyBaseAdapter();
lv_3.setAdapter(myBaseAdapter);
}
//装载数据的类 实体类 POJO类,简单java对象
//一般只包含属性和属性的getter和setter方法
class MyClass
{
//img
private int img;
//name
private String name;
//content
private String content;
public int getImg() {
return img;
}
public void setImg(int img) {
this.img = img;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public MyClass()//默认构造方法
{
}
//直接初始化属性的构造方法
public MyClass(int img,String name,String content)//默认构造方法
{
this.img=img;
this.name=name;
this.content=content;
}
}
//内部类继承抽象类BaseAdapter实现4个方法
class MyBaseAdapter extends BaseAdapter
{
@Override
public int getCount() {
return lm.size();
}
@Override
public Object getItem(int position) {
return lm.get(position);
}
@Override
public long getItemId(int position) {
return 0;
}
//返回适配完成的视图
@Override //convertView可以复用的视图
public View getView(int position, View convertView, ViewGroup parent) {
Log.e("TAG","适配器getView="+position);
//适配一条数据和View
//1 得到数据
MyClass myClass=lm.get(position);
if (convertView==null)
{
Log.e("TAG","适配器getView"+position);
//2 得到View
//加载Layout文件
convertView= View.inflate(TestActivity9.this, R.layout.simple_adapter1, null);
}
//3 把数据放到View里
ImageView imageView=(ImageView)convertView.findViewById(R.id.iv_2);
imageView.setImageResource(myClass.getImg());
TextView textView=(TextView)convertView.findViewById(R.id.tv_7);
textView.setText(myClass.getName());
TextView textView1=(TextView)convertView.findViewById(R.id.tv_8);
textView1.setText(myClass.getContent());
return convertView;
}
}
}
![](https://images2015.cnblogs.com/blog/885594/201605/885594-20160518162119138-1216810528.png)