package com.example.wang.testapp2;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
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"
));
lm.add(new MyClass(R.drawable.f9,"美食9","美食9的介绍"
));
lm.add(new MyClass(R.drawable.f10,"美食10","美食10的介绍"
));
MyBaseAdapter myBaseAdapter=
new MyBaseAdapter();
lv_3.setAdapter(myBaseAdapter);
}
//装载数据的类 实体类 POJO类
//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;
}
//默认构造方法
public MyClass()
{
}
//直接初始化属性的构造方法
public MyClass(
int img,String name,String content)
{
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
//convertView 可以复用的视图
@Override
public View getView(
int position, View convertView, ViewGroup parent) {
//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_adpter,
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());
//4-返回数据
return convertView;
}
}
}
java
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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.example.wang.testapp2.TestActivity9">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/lv_3"></ListView>
</LinearLayout>
xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="70dp"
android:layout_height="70dp"
android:src="@drawable/f1"
android:id="@+id/iv_2"/>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_marginLeft="20dp"
android:gravity="center_vertical"
android:layout_weight="1">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="名字=aaa"
android:id="@+id/tv_7"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="内容=aaa"
android:id="@+id/tv_8"/>
</LinearLayout>
</LinearLayout>
View Code
转载于:https://www.cnblogs.com/wangchuanqi/p/5509909.html
相关资源：Android 常用适配器总结
