java - Textview 可见性在 recyclerview 中自动创建

Question

在我的应用程序中，我将文本可见性设置为不可见，并且我使用的是 firebase 数据库。因此，如果来 self 的 firebase 数据库的权限为真，则 TextView 将设置为可见。它正在工作，但在回收站 View 列表项中出现问题，它在列表的每第 8 项之后可见。请查看我的问题的截图

使用 log.d 我检查了我的项目是否具有 true 权限，结果显示为 true，因为我只给出了一个 true 值。

这是我截图的链接 https://ibb.co/YDpfgxF

Menuadapter.java - 我的 TextView 是“推荐的”

package com.example.myapplication;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.squareup.picasso.Picasso;

import java.util.ArrayList;

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

import static androidx.constraintlayout.widget.Constraints.TAG;

public class MenuAdapter extends RecyclerView.Adapter<MenuAdapter.menuViewHolder>{

    Context context;
    ArrayList<dish> dishes;

    public MenuAdapter(Context c , ArrayList<dish> p)
    {
        context = c;
        dishes = p;

    }

    @NonNull
    @Override
    public menuViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        Log.d(TAG ,"On Create View Holder: called");

        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.cardview, parent, false);

        return new MenuAdapter.menuViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull menuViewHolder holder, final int position) {
        holder.dishname.setText(dishes.get(position).getDishname());
        holder.dishrate.setText(dishes.get(position).getDishrate());



        Picasso.get().load(dishes.get(position).getDishImage()).placeholder(R.drawable.ic_launcher_background).into(holder.dishImage);


        holder.dishImage.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.d(TAG, " : " + dishes.get(position).getDishImage() );
                Toast.makeText(context,"clicked on" + dishes.get(position).getDishname(), Toast.LENGTH_SHORT).show();
            }
        });


        boolean flag = dishes.get(position).getPermission();
        if (flag){
            Log.d(TAG," recommended : " + dishes.get(position).getDishname());
            holder.recommended.setVisibility(View.VISIBLE);

        }



    }

    @Override
    public int getItemCount() {
        return dishes.size();
    }

    class menuViewHolder extends RecyclerView.ViewHolder {

        TextView dishname, dishrate, recommended;
        ImageView dishImage;


            public menuViewHolder(@NonNull View itemView)
            {
                super(itemView);
                dishname = (TextView) itemView.findViewById(R.id.dishname);
                dishrate = (TextView) itemView.findViewById(R.id.dishrate);
                dishImage = (ImageView) itemView.findViewById(R.id.dishImage);
                recommended = (TextView) itemView.findViewById(R.id.recommended);

            }
        }

}

CardView.xml - textview id“推荐”

<?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"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:weightSum="2"
    android:layout_height="wrap_content"
    android:layout_margin="1dp">

    <androidx.cardview.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:elevation="1dp"
        app:cardCornerRadius="2dp"
        app:cardMaxElevation="8dp">


        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="120dp"
            android:gravity="center_vertical">



    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="120dp"
        android:layout_weight="1"
        android:gravity="center_vertical"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textSize="18sp"
            android:textStyle="bold"
            android:layout_marginStart="10dp"
            android:id="@+id/dishname"
            android:textColor="@color/dishnamecolor"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_marginTop="5dp"
            android:text="Recommended"
            android:layout_marginStart="10dp"
            android:background="@color/recommended"
            android:id="@+id/recommended"
            android:textColor="#ffffff"
            android:layout_height="wrap_content"
            android:visibility="invisible"
            />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textSize="18sp"
            android:textStyle="bold"
            android:id="@+id/dishrate"
            android:layout_marginStart="10dp"
            android:layout_marginTop="10dp"
            android:layout_marginBottom="10dp"
            android:textColor="@color/dishratecolor"/>

    </LinearLayout>

    <LinearLayout
        android:layout_width="10dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="end"

        >

        <ImageView
            android:id="@+id/dishImage"
            android:layout_width="100dp"
            android:scaleType="fitXY"
            android:layout_marginRight="10dp"
            android:layout_gravity="end"
            android:layout_marginLeft="20dp"
            android:layout_height="100dp" />
    </LinearLayout>

        </LinearLayout>

    </androidx.cardview.widget.CardView>

</LinearLayout>

I/art: Do partial code cache collection, code=26KB, data=29KB
    After code cache collection, code=25KB, data=28KB
    Increasing code cache capacity to 128KB
D/Constraints: On Create View Holder: called
D/Constraints: On Create View Holder: called
D/Constraints: On Create View Holder: called
V/FA: Inactivity, disconnecting from the service
I/art: Do partial code cache collection, code=57KB, data=60KB
I/art: After code cache collection, code=57KB, data=60KB
    Increasing code cache capacity to 256KB
D/Constraints:  recommended : Chili Paneer(Dry)

Answer 1

我实际上并没有设法理解你的问题，但我认为如果你在像这样检查权限状态后添加一个 else 就可以解决

if (flag){
        Log.d(TAG," recommended : " + dishes.get(position).getDishname());
        holder.recommended.setVisibility(View.VISIBLE);
    }else{
        holder.recommended.setVisibility(View.INVISIBLE);

 }