Android第六周作业

Android购物商城

1.MainActivity.java

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>