效果图
activity
package com.example.recyclerview.activity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.view.View;
import com.example.recyclerview.R;
import com.example.recyclerview.User;
import com.example.recyclerview.adapter.ThreeAdapter;
public class ThreeActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
RecyclerView recyclerView = findViewById(R.id.recyclerview);
StaggeredGridLayoutManager staggeredGridLayoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
recyclerView.setLayoutManager(staggeredGridLayoutManager);
ThreeAdapter threeAdapter = new ThreeAdapter(this);
String[] avatarArray = new String[]{
"https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1544442373811&di=848a4182d8f35674317cd145fa09fa88&imgtype=0&src=http%3A%2F%2Fi0.hdslb.com%2Fbfs%2Fface%2Faf5068ab80526f8d4a9acb8907277b534c633d07.jpg",
"https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1545037250&di=866ab32daebc69e66bcb041b97340fb7&imgtype=jpg&er=1&src=http%3A%2F%2Fhellorfimg.zcool.cn%2Fpreview%2F293300162.jpg",
"https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1544452449351&di=9063f14cfc8d124e7ed08c635f677d19&imgtype=0&src=http%3A%2F%2Fimgsrc.baidu.com%2Fimgad%2Fpic%2Fitem%2Ff9dcd100baa1cd11a438a2e9b312c8fcc2ce2d69.jpg"};
for (int i = 0; i < 30; i++) {
User user = new User();
user.setName("张"+i);
user.setAvatar(avatarArray[i%avatarArray.length]);
threeAdapter.addItem(user);
}
recyclerView.setAdapter(threeAdapter);
recyclerView.setItemAnimator(new DefaultItemAnimator());
}
}
xml布局
<?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.support.v7.widget.RecyclerView
android:id="@+id/recyclerview"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
adapter代码
package com.example.recyclerview.adapter;
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import com.example.recyclerview.R;
import com.example.recyclerview.User;
import java.util.ArrayList;
import java.util.List;
public class ThreeAdapter extends RecyclerView.Adapter<ThreeAdapter.MyViewholder> {
private List<User> mDatas;
private Context context;
public ThreeAdapter(Context context) {
this.mDatas = new ArrayList<>();
this.context = context;
}
public void addItem(User user){
if(user != null){
mDatas.add(user);
}
}
@NonNull
@Override
public MyViewholder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(context).inflate(R.layout.three,viewGroup,false);
return new MyViewholder(view);
}
@Override
public void onBindViewHolder(@NonNull MyViewholder myViewholder, int i) {
User user = mDatas.get(i);
myViewholder.title.setText(user.getName());
Glide.with(context).load(user.getAvatar()).into(myViewholder.avatar);
myViewholder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
}
@Override
public int getItemCount() {
return mDatas.size();
}
public class MyViewholder extends RecyclerView.ViewHolder {
public final TextView title;
public final ImageView avatar;
public MyViewholder(@NonNull View itemView) {
super(itemView);
title = itemView.findViewById(R.id.title);
avatar = itemView.findViewById(R.id.avatar);
}
}
}
xml代码
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/avatar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"/>
<TextView
android:id="@+id/title"
android:layout_width="match_parent"
android:layout_height="50dp"
android:gravity="center"/>
</LinearLayout>