安卓作业(补
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; } } } <?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> <?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>