🍓🍓简述

最近因为需要所以学习了一下recycleview,使用Adapter修饰器修饰，使用一个Adapter+recycleview实现多种布局，而不是之前的三个Adapter在同一个recycleview中实现三个布局。点击区分布局中的gridview的图片和姓名。

嗯~，算是之前的在同一个recycleview中实现三个不同布局的升级版吧。因为之前使用了三个Adapter【修饰器】，而这个只是用了一个Adapter【修饰器】

🍓🍓效果图

动态图》》》

🍓🍓代码

🥭🥭AllAdapter.java

package Adapter;import android.app.Activity;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 androidx.annotation.NonNull;import androidx.lifecycle.GenericLifecycleObserver;import androidx.recyclerview.widget.GridLayoutManager;import androidx.recyclerview.widget.LinearLayoutManager;import androidx.recyclerview.widget.RecyclerView;import com.example.layout_test.MainActivity;import com.example.layout_test.R;import org.jetbrains.annotations.NotNull;import java.util.List;import domain.FuritBean;import static domain.msgcode.TYPE_1;import static domain.msgcode.TYPE_2;import static domain.msgcode.TYPE_3;public class AllAdapter extends RecyclerView.Adapter<AllAdapter.ViewHolder> {    private List<FuritBean> mFruitList;    private RecyclerView mRecycleView;    private OnItemClickListener mOnItemClickListener;    public int Position1,Position2;    private View View;    class ViewHolder extends RecyclerView.ViewHolder{        private final ImageView mfruitImage;        private final TextView mfruitName;        private final RecyclerView mRecycleView,mRecycleView2;        public ViewHolder(@NonNull @NotNull View view) {            super(view);            mfruitImage=view.findViewById(R.id.mImg1);            mfruitName=view.findViewById(R.id.mTv1);            mRecycleView=view.findViewById(R.id.recycle_item);            mRecycleView2=view.findViewById(R.id.recycle_item2);    // todo 此处添加两个方法    //添加一个OnItemClickListener接口，并且定义两个方法    public interface OnItemClickListener{        void onClick(int position1,int position2,View view);    }    //然后定义一个监听的方法，便于主类调用    public void setOnItemListener(OnItemClickListener onItemListener){        this.mOnItemClickListener = onItemListener;    }    // 构造方法    public AllAdapter(List<FuritBean> mFruitList) {        this.mFruitList = mFruitList;    }    // 获取布局类型，方便分类    @Override    public int getItemViewType(int position) {        if (position ==1|| position ==4 || position==9){            return TYPE_1;        }        else if(position == TYPE_2){            return TYPE_2;        }        else {            return TYPE_2;        }    }//    @Override//    public long getItemId(int position) {//        return position;//    }    //  根据布局类型，返回不同的view  ViewHolder    @NonNull    @NotNull    @Override    public AllAdapter.ViewHolder onCreateViewHolder(@NonNull @NotNull ViewGroup parent, int viewType) {        View view = null;        ViewHolder viewHolder = null;        switch (viewType){            case TYPE_1:                view= LayoutInflater.from(parent.getContext()).inflate(R.layout.item1,parent,false);                viewHolder=new ViewHolder(view);                break;            case TYPE_2:                view=LayoutInflater.from(parent.getContext()).inflate(R.layout.item2,parent,false);                viewHolder=new ViewHolder(view);                break;        }        return viewHolder;    }    @Override    public void onBindViewHolder(@NonNull @NotNull AllAdapter.ViewHolder holder, int position) {        switch (getItemViewType(position)){            case TYPE_1:                ViewHolder viewHolder=holder;                GridLayoutManager gridLayoutManager=new GridLayoutManager(viewHolder.mRecycleView.getContext(),5);                viewHolder.mRecycleView.setLayoutManager(gridLayoutManager);                FuritAdapter3 furitAdapter3=new FuritAdapter3(mFruitList,position);                                furitAdapter3.FSetonclick(new FuritAdapter3.FuritSetOnclick() {                    @Override                    public void clickGetData(int position, int position2,View view) {                        mOnItemClickListener.onClick(position,position2,view);                    }                });                viewHolder.mRecycleView.setAdapter(furitAdapter3);                break;            case TYPE_2:                ViewHolder viewHolder2=holder;                FuritBean furit1=mFruitList.get(position);                viewHolder2.mfruitImage.setImageResource(furit1.getImageId());                viewHolder2.mfruitName.setText(furit1.getName());                break;            default:                break;        }    }    @Override    public int getItemCount() {        return mFruitList.size();    }}

🥭🥭 FuritAdapter3.java

package Adapter;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 androidx.annotation.NonNull;import androidx.recyclerview.widget.RecyclerView;import com.example.layout_test.R;import org.jetbrains.annotations.NotNull;import java.util.List;import domain.FuritBean;public class FuritAdapter3 extends RecyclerView.Adapter<FuritAdapter3.ViewHolder> {    private List<FuritBean> mFruitList;    private FuritSetOnclick furitSetOnclick;    private int position2;    static class ViewHolder extends RecyclerView.ViewHolder{        private final ImageView mfruitImage;        private final TextView mfruitName;        public ViewHolder(@NonNull @NotNull View itemView) {            super(itemView);            mfruitImage= itemView.findViewById(R.id.mImg3);            mfruitName = itemView.findViewById(R.id.mTv3);        }    }    public FuritAdapter3(List<FuritBean> mFruitList, int position) {        this.mFruitList = mFruitList;        this.position2 = position;    }    @NonNull    @Override    public FuritAdapter3.ViewHolder onCreateViewHolder(@NonNull @NotNull ViewGroup parent, int viewType) {        View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.recycle_item3,parent,false);        ViewHolder viewHolder=new ViewHolder(view);        return viewHolder;    }    @Override    public void onBindViewHolder(@NonNull @NotNull FuritAdapter3.ViewHolder holder, int position) {        FuritBean furit=mFruitList.get(position);        holder.mfruitImage.setImageResource(furit.getImageId());        holder.mfruitName.setText(furit.getName());        holder.mfruitImage.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                furitSetOnclick.clickGetData(position2,position,holder.mfruitImage);            }        });        holder.mfruitName.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                furitSetOnclick.clickGetData(position2,position,holder.mfruitName);            }        });    }    @Override    public int getItemCount() {        return mFruitList.size();    }    //  定义一个监听接口，里面有两个方法    public interface FuritSetOnclick{        void clickGetData(int position,int position2,View view);    }    //给监听一个构造函数，提供给  MainActivity  调用    public void FSetonclick(FuritSetOnclick furitSetOnclick){        this.furitSetOnclick=furitSetOnclick;    }}

🥭🥭MainActivity.java(主函数)

package Adapter;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 androidx.annotation.NonNull;import androidx.recyclerview.widget.RecyclerView;import com.example.layout_test.R;import org.jetbrains.annotations.NotNull;import java.util.List;import domain.FuritBean;public class FuritAdapter3 extends RecyclerView.Adapter<FuritAdapter3.ViewHolder> {    private List<FuritBean> mFruitList;    private FuritSetOnclick furitSetOnclick;    private int position2;    static class ViewHolder extends RecyclerView.ViewHolder{        private final ImageView mfruitImage;        private final TextView mfruitName;        public ViewHolder(@NonNull @NotNull View itemView) {            super(itemView);            mfruitImage= itemView.findViewById(R.id.mImg3);            mfruitName = itemView.findViewById(R.id.mTv3);        }    }    public FuritAdapter3(List<FuritBean> mFruitList, int position) {        this.mFruitList = mFruitList;        this.position2 = position;    }    @NonNull    @Override    public FuritAdapter3.ViewHolder onCreateViewHolder(@NonNull @NotNull ViewGroup parent, int viewType) {        View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.recycle_item3,parent,false);        ViewHolder viewHolder=new ViewHolder(view);        return viewHolder;    }    @Override    public void onBindViewHolder(@NonNull @NotNull FuritAdapter3.ViewHolder holder, int position) {        FuritBean furit=mFruitList.get(position);        holder.mfruitImage.setImageResource(furit.getImageId());        holder.mfruitName.setText(furit.getName());        holder.mfruitImage.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                furitSetOnclick.clickGetData(position2,position,holder.mfruitImage);            }        });        holder.mfruitName.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                furitSetOnclick.clickGetData(position2,position,holder.mfruitName);            }        });    }    @Override    public int getItemCount() {        return mFruitList.size();    }    //  定义一个监听接口，里面有两个方法    public interface FuritSetOnclick{        void clickGetData(int position,int position2,View view);    }    //给监听一个构造函数，提供给  MainActivity  调用    public void FSetonclick(FuritSetOnclick furitSetOnclick){        this.furitSetOnclick=furitSetOnclick;    }}

🥭🥭FuritBean.java（对象的属性）

package domain;public class FuritBean {    private String name;    private int ImageId;    public String getName() {        return name;    }    public int getImageId() {        return ImageId;    }    public FuritBean(String name, int imageId) {        this.name = name;        ImageId = imageId;    }}

🥭🥭msgcode.java(一些常量抽取出来)

package domain;public class msgcode {    public static final int TYPE_1=0;    public static final int TYPE_2=5;    public static final int TYPE_3=6;}

🥭🥭传值

因为同一个recycleView实现多种布局，其中就有gridview【九宫格布局】。要想在同一个recycleview实现多种布局，而且还要实现每个gridview的监听，常规的办法肯定是不行的。

这就涉及到嵌套了。那么嵌套怎么从最里层的gridview传出每一个小格子中的图片点击和名称点击呢？ 当然使用接口了，具体可以看代码，建议掌握，Android这样的场景太多太多。

虽然gridview传出每一个小格子中的图片点击和名称点击的view不同，可以使用view.getId进行区分，具体效果看上面截图。

🍓🍓xml布局

🍗🍗activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity"    android:orientation="vertical">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="80dp"        android:orientation="vertical">        <androidx.recyclerview.widget.RecyclerView            android:id="@+id/recycle_view1"            android:layout_width="match_parent"            android:layout_height="match_parent" />    LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="400dp">        <androidx.recyclerview.widget.RecyclerView            android:id="@+id/recycle_view2"            android:layout_width="match_parent"            android:layout_height="match_parent"/>    LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="match_parent"        android:orientation="vertical">        <androidx.recyclerview.widget.RecyclerView            android:id="@+id/recycle_view3"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_marginLeft="40dp"/>    LinearLayout>LinearLayout>

🍗🍗item1.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">        <androidx.recyclerview.widget.RecyclerView            android:id="@+id/recycle_item"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_marginLeft="30dp">        androidx.recyclerview.widget.RecyclerView>LinearLayout>

🍗🍗item2.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:orientation="horizontal">    <LinearLayout        android:layout_width="wrap_content"        android:layout_height="match_parent"        android:orientation="vertical">        <TextView            android:id="@+id/mTv1"            android:layout_width="match_parent"            android:layout_height="30dp"            android:gravity="center"            android:layout_gravity="center"/>        <ImageView            android:id="@+id/mImg1"            android:layout_width="50dp"            android:layout_height="50dp" />    LinearLayout>LinearLayout>

🍗🍗item3.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <androidx.recyclerview.widget.RecyclerView        android:id="@+id/recycle_item2"        android:layout_width="match_parent"        android:layout_height="80dp">    androidx.recyclerview.widget.RecyclerView>LinearLayout>

🍗🍗recycle_item3.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:orientation="vertical">    <LinearLayout        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:orientation="vertical"        android:layout_gravity="center">        <ImageView            android:id="@+id/mImg3"            android:layout_width="50dp"            android:layout_height="50dp" />        <TextView            android:id="@+id/mTv3"            android:layout_width="50dp"            android:layout_height="30dp"            android:gravity="center"            android:textColor="#FFFF0000"/>    LinearLayout>LinearLayout>

最后一步，别忘了导入recycleview的依赖

implementation 'androidx.recyclerview:recyclerview:1.1.0'

来源地址：https://blog.csdn.net/qq_46906413/article/details/126234805