网格布局作业

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.example.administrator.testapp">
 4
 5     <application
 6         android:allowBackup="true"
 7         android:icon="@mipmap/ic_launcher"
 8         android:label="@string/app_name"
 9         android:supportsRtl="true"
10         android:theme="@style/AppTheme">
11         <activity android:name=".MainActivity" />
12         <activity android:name=".test_activity6" />
13         <activity android:name=".TestActivity7" />
14         <activity android:name=".TestActivity8" />
15         <activity android:name=".Main2Activity" />
16         <activity android:name=".TestActivity9">
17         </activity>
18         <activity android:name=".TestActivity10">
19             <intent-filter>
20                 <action android:name="android.intent.action.MAIN" />
21                 <category android:name="android.intent.category.LAUNCHER" />
22             </intent-filter>
23         </activity>
24     </application>
25
26 </manifest>

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     tools:context="com.example.administrator.testapp.TestActivity10">
 7
 8     <GridView
 9         android:layout_width="match_parent"
10         android:layout_height="match_parent"
11         android:id="@+id/gv_1"
12         android:numColumns="4"
13         android:horizontalSpacing="20dp"
14         android:stretchMode="columnWidth"
15         android:gravity="center">
16     </GridView>
17 </LinearLayout>

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:orientation="vertical"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent">
 6
 7     <ImageView
 8         android:layout_width="100dp"
 9         android:layout_height="100dp"
10         android:src="@drawable/f1"
11         android:id="@+id/gv_2"/>
12     <TextView
13         android:layout_width="wrap_content"
14         android:layout_height="wrap_content"
15         android:id="@+id/gv_3"
16         android:text="123"
17         android:layout_gravity="center_horizontal"
18         android:textColor="#000"
19         android:textStyle="bold"/>
20 </LinearLayout>

  1 package com.example.administrator.testapp;
  2
  3 import android.os.Bundle;
  4 import android.support.v7.app.AppCompatActivity;
  5 import android.view.View;
  6 import android.view.ViewGroup;
  7 import android.widget.BaseAdapter;
  8 import android.widget.GridView;
  9 import android.widget.ImageView;
 10 import android.widget.TextView;
 11
 12 import java.util.ArrayList;
 13 import java.util.List;
 14
 15 public class TestActivity10 extends AppCompatActivity {
 16
 17     GridView gv_1;
 18     List<MyClass> liv;
 19     TextView gv_3;
 20     ImageView gv_2;
 21     @Override
 22     protected void onCreate(Bundle savedInstanceState) {
 23         super.onCreate(savedInstanceState);
 24         setContentView(R.layout.activity_test10);
 25         gv_1 = (GridView)findViewById(R.id.gv_1);
 26         gv_3 = (TextView)findViewById(R.id.tv_3);
 27         gv_2 = (ImageView)findViewById(R.id.gv_2);
 28
 29         //1、数据 图片的id
 30         liv = new ArrayList<>();
 31         MyClass myClass = new MyClass(R.drawable.f1,"美食1");
 32         liv.add(myClass);
 33         liv.add(new MyClass(R.drawable.f2,"美食2"));
 34         liv.add(new MyClass(R.drawable.f3,"美食3"));
 35         liv.add(new MyClass(R.drawable.f4,"美食4"));
 36         liv.add(new MyClass(R.drawable.f5,"美食5"));
 37         liv.add(new MyClass(R.drawable.f6,"美食6"));
 38         liv.add(new MyClass(R.drawable.f7,"美食7"));
 39         liv.add(new MyClass(R.drawable.f8,"美食8"));
 40         ImageAdapter imageAdapter = new ImageAdapter();
 41         {
 42             gv_1.setAdapter(imageAdapter);
 43         }
 44     }
 45     class MyClass
 46     {
 47         private int img;
 48         private String content;
 49
 50         public int getImg() {
 51             return img;
 52         }
 53
 54         public void setImg(int img) {
 55             this.img = img;
 56         }
 57
 58         public String getContent() {
 59             return content;
 60         }
 61
 62         public void setContent(String content) {
 63             this.content = content;
 64         }
 65         public MyClass(int img,String content)
 66         {
 67             this.img = img;
 68             this.content = content;
 69         }
 70     }
 71     //适配器
 72     class ImageAdapter extends BaseAdapter
 73     {
 74         @Override
 75         public int getCount() {
 76             return liv.size();
 77         }
 78
 79         @Override
 80         public Object getItem(int position) {
 81             return liv.get(position);
 82         }
 83
 84         @Override
 85         public long getItemId(int position) {
 86             return 0;
 87         }
 88
 89         @Override
 90         public View getView(int position, View convertView, ViewGroup parent) {
 91             //1.得到数据 图片的id
 92             MyClass myClass = liv.get(position);
 93             //2.准备View
 94             if (convertView ==null) {
 95                 convertView = View.inflate(TestActivity10.this, R.layout.gridlayout, null);
 96             }
 97             //3.适配
 98             //转换
 99             ImageView imageView = (ImageView)convertView.findViewById(R.id.gv_2);
100             imageView.setImageResource(myClass.getImg());
101
102             TextView textView = (TextView)convertView.findViewById(R.id.gv_3);
103             textView.setText(myClass.getContent());
104
105             return convertView;
106         }
107     }
108 }