安卓第六次作业

 

 

<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/iv"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
           />
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    >
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        >
    <ImageView
    android:id="@+id/jd"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
        />
    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginTop="5dp"
        >
        <TextView
            android:id="@+id/name1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="京东商城"
            android:textSize="50sp"
            />
    </RelativeLayout>
    </LinearLayout>
</LinearLayout>

package cn.itcase.android;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.ListView;
import  android.widget.BaseAdapter;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    private ListView mListView;
    private  String[] titles ={"京东商城","QQ","QQ斗地主","新浪微博","天猫商城","UC浏览器","微信"};
    private int[] icons ={R.drawable.jd,R.drawable.qq,R.drawable.ddz,R.drawable.wb,R.drawable.tm,R.drawable.ll,R.drawable.wx};
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mListView =(ListView) findViewById(R.id.iv);
        MyBaseAdapter mAdapter =new MyBaseAdapter();
        mListView.setAdapter(mAdapter);
    }
    class  MyBaseAdapter extends  BaseAdapter{
        public  int getCount(){
            return titles.length;
        }
        public  Object getItem(int posision){
            return titles[posision];
        }
        public long getItemId(int position){
            return position;
        }
        public View getView(int position, View convertView, ViewGroup parent){
            View view =View.inflate(MainActivity.this,R.layout.list_layout,null);
            TextView title =(TextView) view.findViewById((R.id.name1));
            title.setText(titles[position]);
            ImageView lv=(ImageView)view.findViewById(R.id.jd);
            lv.setBackgroundResource(icons[position]);
            return view;
        }
    }

}