超简单recyclerview 最后一行显示不全解决方案_app

超简单recyclerview 最后一行显示不全解决方案项目代码在最后面！！！！跳转到最后问题现象：

在设置recyclerview的时候我们常常会遇到类似如下图片显示的情况，最后一个item总是显示一半？那么怎么快速解决呢？

解决方案（仅修改adapter几行代码即可）：

基于item本身的容器，我们其实可以在默认再添加一个容器然后不显示即可，修改代码如下：
修改处1 将本就不存在的item置为INVISION 顺便处理好你本身的item点击逻辑，避免干扰

  @Override

    public void onBindViewHolder(@NonNull SViewHolder holder, int position) {

        if (position==getItemCount()-1){
            holder.itemView.setVisibility(View.INVISIBLE);//修改处1 将本就不存在的item置为INVISION 顺便处理好你本身的item点击逻辑，避免干扰
        }else {
           //...原来的逻辑
        }
        
    }

修改处2 适配选项器底部显示不全问题

 @Override
    public int getItemCount() {
        return selectorList.size()+1;//修改处2 增加1个底部item  适配选项器底部显示不全问题
    }

adapter完整代码

package com.ui.design.main.adapter;

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

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

import com.alibaba.android.arouter.launcher.ARouter;
import com.ui.design.R;
import com.ui.design.main.bean.SelectorBean;

import java.util.List;

/**
 * 选项适配器
 * tangxianfeng
 * 2021.7.21
 */
public class SelectorAdapter extends RecyclerView.Adapter<SelectorAdapter.SViewHolder> {

    private final List<SelectorBean> selectorList;
    private final Context mContext;

    public SelectorAdapter(Context context, List<SelectorBean> selectors){
        this.mContext=context;
        this.selectorList=selectors;
    }
    @NonNull
    @Override
    public SViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        return new SViewHolder(LayoutInflater.from(mContext).inflate(R.layout.selector_item, parent,false));
    }

    @Override

    public void onBindViewHolder(@NonNull SViewHolder holder, int position) {

        if (position==getItemCount()-1){
            holder.itemView.setVisibility(View.INVISIBLE);//修改处1 将本就不存在的item置为INVISION 顺便处理好你本身的item点击逻辑，避免干扰
        }else {
            holder.cardname.setText(selectorList.get(position).Selectorname);
            holder.itemView.setOnClickListener(v -> {
                ARouter.getInstance().build(selectorList.get(position).routeName).withString("title",selectorList.get(position).Selectorname).withString("blogurl",selectorList.get(position).blogurl).navigation();
            });
        }
    }

    @Override
    public int getItemCount() {
        return selectorList.size()+1;//修改处2 适配选项器底部显示不全问题
    }

    static class SViewHolder extends RecyclerView.ViewHolder{

        private final TextView cardname;
        public SViewHolder(@NonNull View itemView) {
            super(itemView);
            cardname=(TextView) itemView.findViewById(R.id.card_selector_name);
        }

    }
}

尾部增加1个item 修改效果

或许可能上面最后一个item可能还是欠点意思，没有完全显示，这时再加一个item就行

adapter完整代码

package com.ui.design.main.adapter;

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

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

import com.alibaba.android.arouter.launcher.ARouter;
import com.ui.design.R;
import com.ui.design.main.bean.SelectorBean;

import java.util.List;

/**
 * 选项适配器
 * tangxianfeng
 * 2021.7.21
 */
public class SelectorAdapter extends RecyclerView.Adapter<SelectorAdapter.SViewHolder> {

    private final List<SelectorBean> selectorList;
    private final Context mContext;

    public SelectorAdapter(Context context, List<SelectorBean> selectors){
        this.mContext=context;
        this.selectorList=selectors;
    }
    @NonNull
    @Override
    public SViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        return new SViewHolder(LayoutInflater.from(mContext).inflate(R.layout.selector_item, parent,false));
    }

    @Override

    public void onBindViewHolder(@NonNull SViewHolder holder, int position) {

        if (position==getItemCount()-1||position==getItemCount()-2){
            holder.itemView.setVisibility(View.INVISIBLE);//修改处1 将本就不存在的item置为INVISION 顺便处理好你本身的item点击逻辑，避免干扰
        }else {
            holder.cardname.setText(selectorList.get(position).Selectorname);
            holder.itemView.setOnClickListener(v -> {
                ARouter.getInstance().build(selectorList.get(position).routeName).withString("title",selectorList.get(position).Selectorname).withString("blogurl",selectorList.get(position).blogurl).navigation();
            });
        }
    }

    @Override
    public int getItemCount() {
        return selectorList.size()+2;//修改处2 适配选项器底部显示不全问题
    }

    static class SViewHolder extends RecyclerView.ViewHolder{

        private final TextView cardname;
        public SViewHolder(@NonNull View itemView) {
            super(itemView);
            cardname=(TextView) itemView.findViewById(R.id.card_selector_name);
        }

    }
}