Android课程设计第四天ListView运用

注意：课程设计只为完成任务，不做细节描述~

效果图

 <?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"
     tools:context=".MainActivity">
     <ListView
         android:id="@+id/listview"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:text="asad"
         >
     </ListView>

 </RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <ImageView
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:id="@+id/img_ico"
        android:src="@mipmap/x2017612"/>
    <TextView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:id="@+id/text1"
        android:layout_toRightOf="@id/img_ico"
        android:text="miemie"
        android:textSize="16sp"
        android:textColor="#0ccfff"/>
    <TextView

        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:id="@+id/text2"
        android:layout_below="@id/text1"
        android:layout_alignLeft="@id/text1"
        android:text="xxxxx"
        android:textSize="16sp"
        android:textColor="#0ccfff"
        />
</RelativeLayout>

 package com.example.myapplication;

 import android.content.Context;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.BaseAdapter;
 import android.widget.ImageView;
 import android.widget.TextView;

 /**
  * Created by 樱花落舞 on 2017/6/12.
  */

 public class MyAdapter extends BaseAdapter {
     private String names[], contents[];
     private int images[];
     //上下文
     private Context context;

     public MyAdapter(String names[], String contents[], int images[],Context context) {
         this.names = names;
         this.contents = contents;
         this.images = images;
         this.context=context;
     }

     //获取列表总数
     @Override
     public int getCount() {
         return names.length;
     }

     //获取单个item
     @Override
     public Object getItem(int position) {
         return names[position];
     }

     //获取itemid
     @Override
     public long getItemId(int position) {
         return position;
     }

     //得到item视图
     @Override
     public View getView(int position, View convertView, ViewGroup parent) {
         View view = LayoutInflater.from(context).inflate(R.layout.item,null);
         ImageView image = (ImageView) view.findViewById(R.id.img_ico);
         TextView name = (TextView) view.findViewById(R.id.text1);
         TextView content = (TextView) view.findViewById(R.id.text2);

         image.setImageResource(images[position]);
         name.setText(names[position]);
         content.setText(contents[position]);

         return view;
     }
 }

 package com.example.myapplication;

 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;
 /*
     listview的使用
         在布局中准备控件
         在java代码中声明实例化
         准备数据源
         创建适配器
         加载适配器

  */
 public class MainActivity extends AppCompatActivity {
     //声明控件
     private ListView listView;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         listView= (ListView) findViewById(R.id.listview);

         String names[]={"xh","xhh","xhhh","xhhhh"};
         String contents[]={"Max","max","min","Min"};
         int images[]={R.mipmap.a,R.mipmap.b,R.mipmap.c,R.mipmap.d};
         MyAdapter adapter =new MyAdapter(names,contents,images,MainActivity.this);
         listView.setAdapter(adapter);
     }
 }