RecyclerView展示数据
导入依赖:
implementation 'com.android.support:recyclerview-v7:28.0.0'
布局引用:
<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:orientation="vertical"
android:layout_height="match_parent"
tools:context=".MainActivity">
<android.support.v7.widget.RecyclerView
android:id="@+id/ceshilist"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
适配器:
package com.example.administrator.recyclerviewdemo;
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.TextView;
import java.util.List;
/*
* @Comment :list的适配器
* @Created :2018/11/5 17:49
* @Name : YJ
*/public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyHolder> {
private Context context;
private List<String> list;
public MyAdapter(Context context, List<String> list) {
this.context = context;
this.list = list;
}
@NonNull
@Override
public MyAdapter.MyHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
MyHolder myHolder=new MyHolder(LayoutInflater.from(context).inflate(R.layout.item,viewGroup,false));
return myHolder;
}
@Override
public void onBindViewHolder(@NonNull MyAdapter.MyHolder myHolder, final int i) {
myHolder.mText.setText("第"+i+"条数据");
}
@Override
public int getItemCount() {
return list.size();
}
public class MyHolder extends RecyclerView.ViewHolder {
private TextView mText;
public MyHolder(@NonNull View itemView) {
super(itemView);
mText= itemView.findViewById(R.id.text);
}
}
}
代码引用:
package com.example.administrator.recyclerviewdemo;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private RecyclerView mCeshiList;
private MyAdapter myAdapter;
private List<String> list;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mCeshiList=findViewById(R.id.ceshilist);
setList();
}
public void setList(){
//添加数据
list=new ArrayList<>();
for (int i=0;i<50;i++){
list.add("第"+i+"条数据");
}
LinearLayoutManager linearLayoutManager=new LinearLayoutManager(this);
mCeshiList.setLayoutManager(linearLayoutManager);
myAdapter=new MyAdapter(this,list);
mCeshiList.setAdapter(myAdapter);
}
}