05-17 列表视图（2）

1.AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.administrator.testapp">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity" />
        <activity android:name=".test_activity6"></activity>
        <activity android:name=".TestActivity7">
        </activity>
        <activity android:name=".TestActivity8">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

2.activity_test8.xml

<?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"
    tools:context=".TestActivity8">

    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/lv_2">
    </ListView>
</LinearLayout>

3.simple_adapter.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="match_parent">

    <ImageView
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:src="@drawable/f1"
        android:id="@+id/iv_2"/>
    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_weight="1"
        android:layout_marginTop="20dp">
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="名字=aaa"
            android:gravity="center"
            android:id="@+id/tv_8"
            android:textSize="20dp"
            android:textColor="#F0F"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="内容=aaa"
            android:gravity="center"
            android:id="@+id/tv_9"
            android:textSize="20dp"
            android:textColor="#F0F"/>
    </LinearLayout>
</LinearLayout>

4.TestActivity8.java

package com.example.administrator.testapp;

import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleAdapter;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Objects;

public class TestActivity8 extends AppCompatActivity {
    ListView lv_2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test_8);

        lv_2 = (ListView)findViewById(R.id.lv_2);

        //1-1.数据源集合
        List<Map<String,Object>> lm = new ArrayList<Map<String,Object>>();

        Map<String,Object> map = new HashMap<String,Object>();
        map.put("img",R.drawable.f1);
        map.put("name", "美食1");
        map.put("content", "美食1的介绍");
        lm.add(map);

        map = new HashMap<String,Object>();
        map.put("img",R.drawable.f2);
        map.put("name", "美食2");
        map.put("content", "美食2的介绍");
        lm.add(map);

        map = new HashMap<String,Object>();
        map.put("img",R.drawable.f3);
        map.put("name", "美食3");
        map.put("content", "美食3的介绍");
        lm.add(map);

        map = new HashMap<String,Object>();
        map.put("img",R.drawable.f4);
        map.put("name", "美食4");
        map.put("content", "美食4的介绍");
        lm.add(map);

        map = new HashMap<String,Object>();
        map.put("img",R.drawable.f5);
        map.put("name", "美食5");
        map.put("content", "美食5的介绍");
        lm.add(map);

        map = new HashMap<String,Object>();
        map.put("img",R.drawable.f6);
        map.put("name", "美食6");
        map.put("content", "美食6的介绍");
        lm.add(map);

        map = new HashMap<String,Object>();
        map.put("img",R.drawable.f7);
        map.put("name", "美食7");
        map.put("content", "美食7的介绍");
        lm.add(map);

        map = new HashMap<String,Object>();
        map.put("img",R.drawable.f8);
        map.put("name", "美食8");
        map.put("content", "美食8的介绍");
        lm.add(map);

        map = new HashMap<String,Object>();
        map.put("img",R.drawable.f9);
        map.put("name", "美食9");
        map.put("content", "美食9的介绍");
        lm.add(map);

        map = new HashMap<String,Object>();
        map.put("img",R.drawable.f10);
        map.put("name", "美食10");
        map.put("content", "美食10的介绍");
        lm.add(map);


        //数组 key的数组
        String [] strings = {"img","name","content"};

        int[]ids = {R.id.iv_2,R.id.tv_8,R.id.tv_9};

        //1-2.创建simple-AdaPter

        SimpleAdapter simpleAdapter = new SimpleAdapter(this,
                lm,R.layout.simple_adapter,strings,ids);

        //1-3.绑定适配器

        lv_2.setAdapter(simpleAdapter);

    }
}