安卓第六周作业

package com.example.myapplication;

 

import androidx.appcompat.app.AppCompatActivity;

 

import android.annotation.SuppressLint;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.net.Uri;

import android.os.Bundle;

import android.widget.ImageView;

import android.widget.ListView;

import android.widget.TextView;

 

public class MainActivity extends AppCompatActivity {

    private ListView mListView;

    private String[] titles={ "桌子","苹果","蛋糕","线衣","猕猴桃","围巾"};

    private String[] prices={ "1800元","10元/kg","300元","350元","10元/kg","280元"};

    private int[] icons={ R.mipmap.table,R.mipmap.apple,R.mipmap.cake,R.mipmap.wireclothes,R.mipmap.kiwifruit,R.mipmap.scarf};

    @SuppressLint("WrongViewCast")

    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;

        }

 

        @Override

        public Object getItem(int position) {

            return titles[position];

        }

        public long getItemId(int position){

            return position;

 

        }

        public View getView(int position, View convertView, ViewGroup parent){

            View view=View.inflate(MainActivity.this,R.layout.layout2,null);

            TextView title=(TextView) view.findViewById(R.id.title);

            TextView price=(TextView) view.findViewById(R.id.price);

            ImageView iv=(ImageView) view.findViewById(R.id.iv);

            title.setText(titles[position]);

            price.setText(prices[position]);

            iv.setBackgroundResource(icons[position]);

            return view;

 

        }

    }

 

}

　　2.activity_main.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="vertical">       <TextView         android:layout_width="match_parent"         android:layout_height="45dp"         android:text="商城购物"         android:textSize="18sp"         android:textColor="#FFFFFF"         android:background="#FF8F03"         android:gravity="center"         ></TextView>     <ListView         android:id="@+id/Iv"         android:layout_width="match_parent"         android:layout_height="wrap_content">       </ListView>   </LinearLayout>

　　3.layout2.xml

<?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"     android:padding="16dp">         <ImageView             android:id="@+id/iv"             android:layout_width="120dp"             android:layout_height="90dp"             android:layout_centerVertical="true" ></ImageView>         <RelativeLayout             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_marginLeft="10dp"             android:layout_toRightOf="@+id/iv"             android:layout_centerVertical="true">             <TextView             android:id="@+id/title"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:text="桌子"             android:textSize="20sp"             android:textColor="#000000"></TextView>             <TextView             android:id="@+id/tv_price"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:text="价格:"             android:textSize="20sp"             android:layout_marginTop="10dp"             android:layout_below="@+id/title"             android:textColor="#FFEF03"></TextView>             <TextView             android:id="@+id/price"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:text="1000"             android:textSize="20sp"             android:layout_below="@+id/title"             android:layout_toRightOf="@+id/tv_price"             android:textColor="#FF8F03"             android:layout_marginTop="10dp"></TextView>         </RelativeLayout> </RelativeLayout>