RecyclerView基础控件用法（二）

网格布局示例

Main代码如下

public class WangGeActivity extends AppCompatActivity {
    
    
    private RecyclerView recyclerView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    
    
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_wang_ge);
        recyclerView = findViewById(R.id.recyclerView2);
        //设置布局方式以及列数
        recyclerView.setLayoutManager(new GridLayoutManager(WangGeActivity.this,3));
        recyclerView.setAdapter(new WangGeAdapter(WangGeActivity.this));
    }
}

适配器代码
和列表适配器的基本上一毛一样
代码看不懂可以去看我上一篇的教程，那个注释多

package com.huatex.recyclerlayout.Adapter;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.huatex.recyclerlayout.R;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

public class WangGeAdapter extends RecyclerView.Adapter<WangGeAdapter.LinearViewHolder> {
    
    
    public WangGeAdapter(Context mcontext) {
    
    
        this.mcontext = mcontext;
    }

    private Context mcontext;

    @NonNull
    @Override
    public WangGeAdapter.LinearViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    
    
        return new LinearViewHolder(LayoutInflater.from(mcontext).inflate(R.layout.layout_wangge_item, parent, false));
    }

    @Override
    public void onBindViewHolder(@NonNull WangGeAdapter.LinearViewHolder holder, int position) {
    
    
        holder.tv.setText("时崎狂三");
    }

    @Override
    public int getItemCount() {
    
    
        return 30;
    }

    public class LinearViewHolder extends RecyclerView.ViewHolder {
    
    
        private TextView tv;

        public LinearViewHolder(@NonNull View itemView) {
    
    
            super(itemView);

            tv = itemView.findViewById(R.id.textView);
        }
    }
}

列表布局采用卡片式

效果图