gridview.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical">
<!--
android:numColumns="" 每一行显示多少列
android:horizontalSpacing="" 两列之间的间距
android:verticalSpacing="" 两行之间的间距
-->
<GridView
android:id="@+id/gridview1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:numColumns="3"
android:horizontalSpacing="10dp"
android:verticalSpacing="10dp">
</GridView>
</android.support.constraint.ConstraintLayout>
gridview中每一项显示:gridviewitem.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:orientation="vertical">
<ImageView
android:id="@+id/gridviewimg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@mipmap/ic_launcher"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent" />
<TextView
android:id="@+id/gridviewtext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="文字"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent" />
</android.support.constraint.ConstraintLayout>
gridview.java
package com.example.administrator.listview;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Created by Administrator on 2018/3/9 0009.
*/
public class gridview extends AppCompatActivity implements AdapterView.OnItemClickListener{
private GridView gridView;
private List<Map<String,Object>> dataList;
private int[] icon={R.mipmap.ic_launcher,R.mipmap.ic_launcher,
R.mipmap.ic_launcher,R.mipmap.ic_launcher,R.mipmap.ic_launcher,
R.mipmap.ic_launcher,R.mipmap.ic_launcher,R.mipmap.ic_launcher,
R.mipmap.ic_launcher};
private String[] iconName={"通讯录1","通讯录2","通讯录3","通讯录4",
"通讯录5","通讯录6","通讯录7","通讯录8","通讯录9"};
private SimpleAdapter simpleAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.gridview);
gridView = findViewById(R.id.gridview1);
/*
* 1.准备数据源
* 2.新建适配器(simpleAdapter)
* 3.GridView加载适配器
* 4.GridView配置事件监听器(OnItemClickListener)
* */
dataList =new ArrayList<Map<String,Object>>();
// getdata();
simpleAdapter=new SimpleAdapter(this,getdata(),R.layout.gridviewitem,new String[]{"img","text"},new int[]{R.id.gridviewimg,R.id.gridviewtext});
gridView.setAdapter(simpleAdapter);
gridView.setOnItemClickListener(this);
}
private List<Map<String,Object>> getdata() {
Log.i("tag", "iconlength="+icon.length);
for (int i=0;i<icon.length;i++){
Map<String,Object> map=new HashMap<String,Object>();
map.put("img",icon[i]);
map.put("text",iconName[i]);
dataList.add(map);
}
return dataList;
}
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Toast.makeText(this,"我是"+iconName[i],Toast.LENGTH_SHORT).show();
}
}
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