GridView

Posted 2020-07-09 beens

layout代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.my.myapplication.Test_GridView">

    <GridView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/gv_1"
        android:numColumns="4"
        android:stretchMode="columnWidth"
        android:horizontalSpacing="30dp"></GridView>
</LinearLayout>

View Code

gridviewlayout代码：

<?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="match_parent">

    <ImageView
        android:layout_width="110dp"
        android:layout_height="110dp"
        android:src="@drawable/f1"
        android:id="@+id/iv_2"/>
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/tv_9"/>
</LinearLayout>

View Code

Activity代码：

package com.example.my.myapplication;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

public class Test_GridView extends AppCompatActivity {

    GridView gv_1;
    List<MyClass> liv;
    TextView tv_9;
    ImageView iv_2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test__grid_view);

        gv_1=(GridView)findViewById(R.id.gv_1);
        tv_9=(TextView)findViewById(R.id.tv_9);
        iv_2=(ImageView)findViewById(R.id.iv_2);

        //1.数据 图片的id
        liv=new ArrayList<>();
        MyClass myClass=new MyClass(R.drawable.f1,"美食1的价格");
        liv.add(myClass);
        liv.add(new MyClass(R.drawable.f2,"美食2的价格"));
        liv.add(new MyClass(R.drawable.f3,"美食3的价格"));
        liv.add(new MyClass(R.drawable.f4,"美食4的价格"));
        liv.add(new MyClass(R.drawable.f5,"美食5的价格"));
        liv.add(new MyClass(R.drawable.f6,"美食6的价格"));
        liv.add(new MyClass(R.drawable.f7,"美食7的价格"));
        liv.add(new MyClass(R.drawable.f8,"美食8的价格"));
        liv.add(new MyClass(R.drawable.f9,"美食9的价格"));
        liv.add(new MyClass(R.drawable.f10,"美食10的价格"));
        ImageAdapter imageAdapter =new ImageAdapter();
        {
            gv_1.setAdapter(imageAdapter);
        }

    }

    class MyClass
    {
        private int img;
        private String content;
        public  int getImg()
        {
            return img;
        }
        public void setImg(int img)
        {
            this.img=img;
        }
        public String getContent()
        {
            return content;
        }
        public void setContent(String content)
        {
            this.content=content;
        }
        public MyClass(int img,String content)
        {
            this.img=img;
            this.content=content;
        }
    }

    //适配器

    class ImageAdapter extends BaseAdapter
    {
        @Override
        public int getCount() {
            return liv.size();
        }

        @Override
        public Object getItem(int position) {
            return liv.get(position);
        }

        @Override
        public long getItemId(int position) {
            return 0;
        }

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

            //1.得到数据 图片的id
            MyClass myClass=liv.get(position);

            //2.准备View
            if (convertView==null)
            {
                convertView=View.inflate(Test_GridView.this,R.layout.gridview,null);

            }

            //3.适配
            //转换
            ImageView imageView=(ImageView)convertView.findViewById(R.id.iv_2);
            imageView.setImageResource(myClass.getImg());

//            imageView.setMaxWidth(70);
//            imageView.setMaxHeight(70);
            //imageView.setLayoutParams(new GridView.LayoutParams(70,70));

            TextView textView=(TextView)convertView.findViewById(R.id.tv_9);
            textView.setText(myClass.getContent());
            return convertView;
        }
    }
}

View Code

效果图：