Android studio之GridView使用

效果图：

代码：

UserGridviewAdapter

package com.example.gridviewpro.Adapter;import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;import com.example.gridviewpro.R;
import com.example.gridviewpro.bean.UserGridviewBean;import java.util.List;public class UserGridviewAdapter extends BaseAdapter {private Context mContext;private List<UserGridviewBean> mUserGridviewBeanList;public UserGridviewAdapter(Context context, List<UserGridviewBean> userGridviewBeanList) {mContext = context;mUserGridviewBeanList = userGridviewBeanList;}@Overridepublic int getCount() {return mUserGridviewBeanList == null ? 0 : mUserGridviewBeanList.size();}@Overridepublic Object getItem(int i) {return getItem(i);}@Overridepublic long getItemId(int i) {return i;}@Overridepublic View getView(int i, View view, ViewGroup viewGroup) {ViewHolder viewHolder;if (view == null) {view = View.inflate(mContext, R.layout.gridview_item, null);viewHolder = new ViewHolder(view);view.setTag(viewHolder);} else {viewHolder = (ViewHolder) view.getTag();}UserGridviewBean userGridviewBean = mUserGridviewBeanList.get(i);viewHolder.mImageView.setImageResource(R.drawable.img);viewHolder.mUserName.setText(userGridviewBean.getUserName());viewHolder.mPower.setText(String.valueOf(userGridviewBean.getPower()));return view;}staticclass ViewHolder {View mView;ImageView mImageView;TextView mUserName;TextView mPower;ViewHolder(View view) {this.mView = view;this.mImageView = (ImageView) view.findViewById(R.id.img);this.mUserName = (TextView) view.findViewById(R.id.userName);this.mPower = (TextView) view.findViewById(R.id.power);}}
}

UserGridviewBean

package com.example.gridviewpro.bean;public class UserGridviewBean {private int mImage;private String mUserName;private int mPower;public UserGridviewBean(int image, String userName, int power) {mImage = image;mUserName = userName;mPower = power;}public int getImage() {return mImage;}public void setImage(int image) {mImage = image;}public String getUserName() {return mUserName;}public void setUserName(String userName) {mUserName = userName;}public int getPower() {return mPower;}public void setPower(int power) {mPower = power;}
}

MainActivity

package com.example.gridviewpro;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;import com.example.gridviewpro.Adapter.UserGridviewAdapter;
import com.example.gridviewpro.bean.UserGridviewBean;import java.util.ArrayList;
import java.util.List;public class MainActivity extends AppCompatActivity {private List<UserGridviewBean> mUserGridviewBeanList = new ArrayList<>();private GridView mGridView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);DateResourse();mGridView = findViewById(R.id.gv);mGridView.setAdapter(new UserGridviewAdapter(MainActivity.this, mUserGridviewBeanList));//监控item点击情况mGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {Toast.makeText(MainActivity.this, mUserGridviewBeanList.get(i).getUserName(), Toast.LENGTH_SHORT).show();}});}private void DateResourse() {for (int i = 0; i < 100; i++) {mUserGridviewBeanList.add(new UserGridviewBean(R.drawable.img, "张三" + i, 100 + i));}}
}

item

<?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">
<ImageViewandroid:id="@+id/img"android:layout_width="60dp"android:layout_height="60dp"android:layout_gravity="center"/><TextViewandroid:id="@+id/userName"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textSize="10sp"android:layout_gravity="center"/><TextViewandroid:id="@+id/power"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textSize="10sp"android:layout_gravity="center"/>
</LinearLayout>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"tools:context=".MainActivity"><GridViewandroid:id="@+id/gv"android:layout_width="match_parent"android:layout_height="match_parent"android:numColumns="4"/>
</LinearLayout>