Java 尝试长时间后，无法在回收器视图内的两个卡片视图元素之间提供水平和垂直空间

我想在水平回收器视图和垂直回收器视图中的两张卡之间添加一些空间，但无法添加尝试过的所有内容，但无法获得sol，如下图所示，水平回收器视图中的两张卡都在彼此上方

我在XML代码中定义了回收器视图。和版本：-

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:layout_height="match_parent"
    android:background="@color/AppBackground">

    <com.google.android.material.appbar.AppBarLayout
        android:id="@+id/appBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        tools:ignore="MissingConstraints">

        <androidx.appcompat.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?android:attr/actionBarSize"
            android:background="@color/AppBackground">

        </androidx.appcompat.widget.Toolbar>

    </com.google.android.material.appbar.AppBarLayout>


    <androidx.core.widget.NestedScrollView
        android:id="@+id/nestedsview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="10dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/appBar">


        <androidx.constraintlayout.widget.ConstraintLayout
            android:id="@+id/constraint"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:padding="10dp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintStart_toStartOf="parent">

            <TextView
                android:id="@+id/text"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="10dp"
                android:fontFamily="@font/playfair_display_bold_italic"
                android:text="Looking for a delecious cake?"
                android:textColor="@android:color/black"
                android:textSize="20sp"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent" />

            <LinearLayout
                android:id="@+id/linear"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="10dp"
                android:orientation="horizontal"
                app:layout_constraintBottom_toTopOf="@id/recyclerViewHorizontal"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/text">

                <TextView
                    android:id="@+id/textView3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="10dp"
                    android:fontFamily="@font/playfair_display_bold_italic"
                    android:text="More"
                    android:textColor="@android:color/black"
                    android:textSize="20sp"
                    app:layout_constraintTop_toTopOf="parent" />

                <Button
                    android:id="@+id/button"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="200dp"
                    android:layout_marginEnd="20dp"
                    android:text="Button"
                    app:layout_constraintTop_toTopOf="parent"
                    tools:layout_editor_absoluteX="266dp" />
            </LinearLayout>

            <androidx.recyclerview.widget.RecyclerView
                android:id="@+id/recyclerViewHorizontal"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="10dp"
                android:paddingLeft="5dp"
                android:paddingTop="5dp"
                android:paddingRight="5dp"
                android:paddingBottom="5dp"
                app:layout_constraintBottom_toTopOf="@+id/textView6"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="0.526"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/linear"
                tools:context=".FirstActivity">

            </androidx.recyclerview.widget.RecyclerView>

            <TextView
                android:id="@+id/textView6"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="0dp"
                android:layout_marginTop="10dp"
                android:fontFamily="@font/playfair_display_bold_italic"
                android:text="Best Selling"
                android:textColor="@android:color/black"
                android:textSize="20sp"
                app:layout_constraintBottom_toTopOf="@+id/recyclerViewVertical"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@id/recyclerViewHorizontal" />

            <androidx.recyclerview.widget.RecyclerView

                android:id="@+id/recyclerViewVertical"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginHorizontal="20dp"
                android:layout_marginStart="30dp"
                android:layout_marginTop="10dp"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/textView6"
                tools:context=".FirstActivity"

                >

            </androidx.recyclerview.widget.RecyclerView>


        </androidx.constraintlayout.widget.ConstraintLayout>

    </androidx.core.widget.NestedScrollView>


</androidx.constraintlayout.widget.ConstraintLayout>

我的信用卡Xml代码：

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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="wrap_content"
    android:layout_height="wrap_content"
    android:padding="20dp"
    >

    <androidx.cardview.widget.CardView
        android:id="@+id/cardView"
        android:layout_width="170dp"
        android:layout_height="220dp"
        android:padding="10dp"
        android:elevation="10dp"
        app:cardBackgroundColor="@color/CardColor"
        app:cardCornerRadius="25sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:id="@+id/constraint"
            android:layout_width="130dp"
            android:layout_height="180dp"
            android:layout_gravity="center"
            android:background="@color/CardColor"
            android:padding="5dp">

            <ImageView
                android:id="@+id/imageView"
                android:layout_width="90dp"
                android:layout_height="100dp"
                android:foregroundGravity="center_horizontal"
                android:scaleType="fitXY"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent" />

            <TextView
                android:id="@+id/textView4"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="5dp"
                android:layout_marginTop="5dp"
                android:fontFamily="@font/playfair_display_bold_italic"
                android:gravity="center"
                android:text="Great"
                android:textColor="@android:color/black"
                android:textSize="12sp"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/imageView" />

            <TextView
                android:id="@+id/textViewForPieceInfo"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginStart="5dp"
                android:layout_marginTop="5dp"
                android:fontFamily="@font/playfair_display_bold_italic"
                android:text="Ram"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/textView4" />

            <TextView
                android:id="@+id/textViewforPrice"
                android:text="Shyam"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginStart="5dp"
                android:layout_marginTop="5dp"
                android:fontFamily="@font/playfair_display_bold_italic"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/textViewForPieceInfo" />

            <com.google.android.material.floatingactionbutton.FloatingActionButton
                android:id="@+id/floatingActionButton"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginEnd="10dp"
                android:layout_marginBottom="2dp"
                app:fabSize="mini"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="1.0"
                app:layout_constraintStart_toStartOf="parent"
                app:srcCompat="@drawable/ic_baseline_add_24" />

        </androidx.constraintlayout.widget.ConstraintLayout>

    </androidx.cardview.widget.CardView>


</androidx.coordinatorlayout.widget.CoordinatorLayout>

我的回收器视图类别代码：

package com.example.cako;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.app.Activity;
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 androidx.appcompat.widget.Toolbar;

import android.os.Bundle;
import android.widget.Toast;

import com.bumptech.glide.Glide;
import com.google.android.material.floatingactionbutton.FloatingActionButton;

public class FirstActivity extends AppCompatActivity{

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_first);

        String []x={"Aaran", "Aaren", "Aarez", "Aarman", "Aaron", "Aaron-James", "Aarron", "Aaryan", "Abhinav","Ankit"};
        String []image= {"https://upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Aloo_gobi.jpg/180px-Aloo_gobi.jpg",
                "https://upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Aloo_gobi.jpg/180px-Aloo_gobi.jpg",
                "https://upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Aloo_Tikki_served_with_chutneys.jpg/180px-Aloo_Tikki_served_with_chutneys.jpg",
                "https://upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Aloo_Mattar.jpg/180px-Aloo_Mattar.jpg",
                "https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Aloo_Methi_%28Aaloo_Methi%29.JPG/180px-Aloo_Methi_%28Aaloo_Methi%29.JPG",
                "https://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Spicy_alloo_with_tadka_mirchi.jpg/180px-Spicy_alloo_with_tadka_mirchi.jpg",
                "https://upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Aloo_gobi.jpg/180px-Aloo_gobi.jpg",
                "https://upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Aloo_gobi.jpg/180px-Aloo_gobi.jpg",
                "https://upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Aloo_Tikki_served_with_chutneys.jpg/180px-Aloo_Tikki_served_with_chutneys.jpg",
                "https://upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Aloo_Mattar.jpg/180px-Aloo_Mattar.jpg"
        };

        Toolbar toolbar=findViewById(R.id.toolbar) ;
        setSupportActionBar(toolbar);

        RecyclerView horizontalrecyclerView =(RecyclerView)findViewById(R.id.recyclerViewHorizontal);
        horizontalrecyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL,false));
        horizontalrecyclerView.setAdapter(new RecyclerVview(this,x,image));

        RecyclerView verticalrecyclerView =(RecyclerView)findViewById(R.id.recyclerViewVertical);
        verticalrecyclerView.setLayoutManager(new GridLayoutManager(this,2));
        verticalrecyclerView.setAdapter(new RecyclerVview(this,x,image));
    }
}

class RecyclerVview extends RecyclerView.Adapter<RecyclerVview.Holder>{
    Activity co;
    String[] name;
    String[] image;

    public RecyclerVview(Context applicationContext, String[] x, String[] image) {
        co=(Activity)applicationContext;
        name=x;
        this.image=image;
    }

    @NonNull
    @Override
    public Holder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View v=LayoutInflater.from(co).inflate(R.layout.layout_for_horizontal_recyclerview,parent,false);
        return new Holder(v);
    }

    @Override
    public void onBindViewHolder(@NonNull final Holder holder, int position) {
        holder.textViewForItemName.setText(name[position]);
        Glide.with(co).load(image[position]).into(holder.image);
        holder.floatingActionButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(co, "yesWorking", Toast.LENGTH_SHORT).show();
                Log.i("yes","log");
            }
        });
        holder.textViewForPrice.setText("30$");
        holder.textViewForPieceInfo.setText("Single Piece Only.");
    }

    @Override
    public int getItemCount() {
        return name.length;
    }

    public class Holder extends RecyclerView.ViewHolder{
        ImageView image;
        TextView textViewForItemName;
        FloatingActionButton floatingActionButton;
        TextView textViewForPrice;
        TextView textViewForPieceInfo;

        public Holder(@NonNull View itemView) {
            super(itemView);
            image=itemView.findViewById(R.id.imageView);
            textViewForItemName=itemView.findViewById(R.id.textView4);
            floatingActionButton=itemView.findViewById(R.id.floatingActionButton);
            textViewForPieceInfo=itemView.findViewById(R.id.textViewForPieceInfo);
            textViewForPrice=itemView.findViewById(R.id.textViewforPrice);

        }
    }
}

package com.example.cako；
导入androidx.annotation.NonNull；
导入androidx.appcompat.app.appcompat活动；
导入androidx.recyclerview.widget.GridLayoutManager；
导入androidx.recyclerview.widget.LinearLayoutManager；
导入androidx.recyclerview.widget.recyclerview；
导入android.app.Activity；
导入android.content.Context；
导入android.util.Log；
导入android.view.LayoutInflater；
导入android.view.view；
导入android.view.ViewGroup；
导入android.widget.ImageView；
导入android.widget.TextView；
导入androidx.appcompat.widget.Toolbar；
导入android.os.Bundle；
导入android.widget.Toast；
导入com.bumptech.glide.glide；
导入com.google.android.material.floatingactionbutton.floatingactionbutton；
公共类FirstActivity扩展了AppCompatActivity{
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_优先）；
字符串[]x={“Aaran”、“Aaren”、“Aarez”、“Aarman”、“Aaron”、“Aaron James”、“Aarron”、“Aaryan”、“Abhinav”、“Ankit”}；
字符串[]图像={”https://upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Aloo_gobi.jpg/180px-Aloo_gobi.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Aloo_gobi.jpg/180px-Aloo_gobi.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Aloo_Tikki_served_with_chutneys.jpg/180px-Aloo_Tikki_served_with_chutneys.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Aloo_Mattar.jpg/180px-Aloo_Mattar.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Aloo_Methi_%28Aaloo_Methi%29.JPG/180px-Aloo_Methi_%28Aaloo_Methi%29.JPG“，
"https://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Spicy_alloo_with_tadka_mirchi.jpg/180px-Spicy_alloo_with_tadka_mirchi.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Aloo_gobi.jpg/180px-Aloo_gobi.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Aloo_gobi.jpg/180px-Aloo_gobi.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Aloo_Tikki_served_with_chutneys.jpg/180px-Aloo_Tikki_served_with_chutneys.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Aloo_Mattar.jpg/180px-Aloo_Mattar.jpg"
};
Toolbar Toolbar=findviewbyd（R.id.Toolbar）；
设置支持操作栏（工具栏）；
RecyclerView水平RecyclerView=（RecyclerView）findViewById（R.id.RecyclerView水平）；
horizontalrecyclerView.setLayoutManager（新的LinearLayoutManager（此，LinearLayoutManager.HORIZONTAL，false））；
setAdapter（新的RecyclerView（this，x，image））；
RecyclerView verticalrecyclerView=（RecyclerView）findViewById（R.id.RecyclerView垂直）；
setLayoutManager（新的GridLayoutManager（this，2））；
setAdapter（新的RecyclerView（this，x，image））；
}
}
类RecyclerView扩展了RecyclerView.Adapter{
活动公司；
字符串[]名称；
字符串[]图像；
公共视图（上下文应用程序上下文，字符串[]x，字符串[]图像）{
co=（活动）应用上下文；
name=x；
这个。图像=图像；
}
@非空
@凌驾
public Holder onCreateViewHolder（@NonNull ViewGroup父级，int viewType）{
视图v=布局从（co）开始变平。充气（R.layout.LAYOU为水平布局\U为回收视图，父视图，false）；
返还新持有人（五）；
}
@凌驾
public void onBindViewHolder（@NonNull final Holder，int position）{
holder.textViewForItemName.setText（名称[位置]）；
将（图像[位置]）滑入（支架图像）；
holder.floatingActionButton.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图）{
Toast.makeText（co，“yesWorking”，Toast.LENGTH_SHORT）.show（）；
Log.i（“是”、“日志”）；
}
});
holder.textViewForPrice.setText（“30$”）；
holder.textViewForPieceInfo.setText（“仅限单件”）；
}
@凌驾
public int getItemCount（）{
返回name.length；
}
公共类持有者扩展了RecyclerView.ViewHolder{
图像视图图像；
TextView textViewForItemName；
浮动操作按钮浮动操作按钮；
text查看text查看价格；
TextView textViewForPieceInfo；
公共持有者（@NonNull View itemView）{
超级（项目视图）；
image=itemView.findviewbyd（R.id.imageView）；
textViewForItemName=itemView.findViewById（R.id.textView4）；
floatingActionButton=itemView.findViewById（R.id.floatingActionButton）；
textViewForPieceInfo=itemView.findViewById（R.id.textViewForPieceInfo）；
textViewForPrice=itemView.findViewById（R.id.textViewForPrice）；
}
}
}

为

车视图

版面和合同版面内部添加边距 用这个做你的卡

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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="wrap_content"
    android:layout_height="wrap_content"
    android:margin="8dp"
    >

    <androidx.cardview.widget.CardView
        android:id="@+id/cardView"
        android:layout_width="170dp"
        android:layout_height="220dp"
        android:margin="8dp"
        android:elevation="10dp"
        app:cardBackgroundColor="@color/CardColor"
        app:cardCornerRadius="25sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:id="@+id/constraint"
            android:layout_width="130dp"
            android:layout_height="180dp"
            android:layout_gravity="center"
            android:background="@color/CardColor"
            android:padding="5dp">

            <ImageView
                android:id="@+id/imageView"
                android:layout_width="90dp"
                android:layout_height="100dp"
                android:foregroundGravity="center_horizontal"
                android:scaleType="fitXY"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent" />

            <TextView
                android:id="@+id/textView4"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="5dp"
                android:layout_marginTop="5dp"
                android:fontFamily="@font/playfair_display_bold_italic"
                android:gravity="center"
                android:text="Great"
                android:textColor="@android:color/black"
                android:textSize="12sp"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/imageView" />

            <TextView
                android:id="@+id/textViewForPieceInfo"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginStart="5dp"
                android:layout_marginTop="5dp"
                android:fontFamily="@font/playfair_display_bold_italic"
                android:text="Ram"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/textView4" />

            <TextView
                android:id="@+id/textViewforPrice"
                android:text="Shyam"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginStart="5dp"
                android:layout_marginTop="5dp"
                android:fontFamily="@font/playfair_display_bold_italic"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/textViewForPieceInfo" />

            <com.google.android.material.floatingactionbutton.FloatingActionButton
                android:id="@+id/floatingActionButton"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginEnd="10dp"
                android:layout_marginBottom="2dp"
                app:fabSize="mini"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="1.0"
                app:layout_constraintStart_toStartOf="parent"
                app:srcCompat="@drawable/ic_baseline_add_24" />

        </androidx.constraintlayout.widget.ConstraintLayout>

    </androidx.cardview.widget.CardView>


</androidx.coordinatorlayout.widget.CoordinatorLayout>