一个Adapter+recycleview实现多种布局，区分布局中

文章目录

🍓🍓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

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动态图》》》

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🍓🍓代码

🥭🥭AllAdapter.java

packageAdapter;importandroid.app.Activity;importandroid.util.Log;importandroid.view.LayoutInflater;importandroid.view.View;importandroid.view.ViewGroup;importandroid.widget.ImageView;importandroid.widget.TextView;importandroid.widget.Toast;importandroidx.annotation.NonNull;importandroidx.lifecycle.GenericLifecycleObserver;importandroidx.recyclerview.widget.GridLayoutManager;importandroidx.recyclerview.widget.LinearLayoutManager;importandroidx.recyclerview.widget.RecyclerView;importcom.example.layout_test.MainActivity;importcom.example.layout_test.R;importorg.jetbrains.annotations.NotNull;importjava.util.List;importdomain.FuritBean;importstaticdomain.msgcode.TYPE_1;importstaticdomain.msgcode.TYPE_2;importstaticdomain.msgcode.TYPE_3;publicclassAllAdapterextendsRecyclerView.Adapter<AllAdapter.ViewHolder>{privateList<FuritBean> mFruitList;privateRecyclerView mRecycleView;privateOnItemClickListener mOnItemClickListener;publicintPosition1,Position2;privateViewView;classViewHolderextendsRecyclerView.ViewHolder{privatefinalImageView mfruitImage;privatefinalTextView mfruitName;privatefinalRecyclerView mRecycleView,mRecycleView2;publicViewHolder(@NonNull@NotNullView 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publicinterfaceOnItemClickListener{voidonClick(int position1,int position2,View view);}//然后定义一个监听的方法，便于主类调用publicvoidsetOnItemListener(OnItemClickListener onItemListener){this.mOnItemClickListener = onItemListener;}// 构造方法publicAllAdapter(List<FuritBean> mFruitList){this.mFruitList = mFruitList;}// 获取布局类型，方便分类@OverridepublicintgetItemViewType(int position){if(position ==1|| position ==4|| position==9){returnTYPE_1;}elseif(position ==TYPE_2){returnTYPE_2;}else{returnTYPE_2;}}//    @Override//    public long getItemId(int position) {//        return position;//    }//  根据布局类型，返回不同的view  ViewHolder@NonNull@[email protected](@NonNull@NotNullViewGroup parent,int viewType){View view =null;ViewHolder viewHolder =null;switch(viewType){caseTYPE_1:
                view=LayoutInflater.from(parent.getContext()).inflate(R.layout.item1,parent,false);
                viewHolder=newViewHolder(view);break;caseTYPE_2:
                view=LayoutInflater.from(parent.getContext()).inflate(R.layout.item2,parent,false);
                viewHolder=newViewHolder(view);break;}return viewHolder;}@OverridepublicvoidonBindViewHolder(@[email protected] holder,int position){switch(getItemViewType(position)){caseTYPE_1:ViewHolder viewHolder=holder;GridLayoutManager gridLayoutManager=newGridLayoutManager(viewHolder.mRecycleView.getContext(),5);
                viewHolder.mRecycleView.setLayoutManager(gridLayoutManager);FuritAdapter3 furitAdapter3=newFuritAdapter3(mFruitList,position);/**
                 * 取得数据
                 */furitAdapter3.FSetonclick(newFuritAdapter3.FuritSetOnclick(){@OverridepublicvoidclickGetData(int position,int position2,View view){

                        mOnItemClickListener.onClick(position,position2,view);}});

                viewHolder.mRecycleView.setAdapter(furitAdapter3);break;caseTYPE_2:ViewHolder viewHolder2=holder;FuritBean furit1=mFruitList.get(position);
                viewHolder2.mfruitImage.setImageResource(furit1.getImageId());
                viewHolder2.mfruitName.setText(furit1.getName());break;default:break;}}@OverridepublicintgetItemCount(){return mFruitList.size();}}

🥭🥭 FuritAdapter3.java

packageAdapter;importandroid.view.LayoutInflater;importandroid.view.View;importandroid.view.ViewGroup;importandroid.widget.ImageView;importandroid.widget.TextView;importandroid.widget.Toast;importandroidx.annotation.NonNull;importandroidx.recyclerview.widget.RecyclerView;importcom.example.layout_test.R;importorg.jetbrains.annotations.NotNull;importjava.util.List;importdomain.FuritBean;publicclassFuritAdapter3extendsRecyclerView.Adapter<FuritAdapter3.ViewHolder>{privateList<FuritBean> mFruitList;privateFuritSetOnclick furitSetOnclick;privateint position2;staticclassViewHolderextendsRecyclerView.ViewHolder{privatefinalImageView mfruitImage;privatefinalTextView mfruitName;publicViewHolder(@NonNull@NotNullView itemView){super(itemView);
            mfruitImage= itemView.findViewById(R.id.mImg3);
            mfruitName = itemView.findViewById(R.id.mTv3);}}publicFuritAdapter3(List<FuritBean> mFruitList,int position){this.mFruitList = mFruitList;this.position2 = position;}@[email protected](@NonNull@NotNullViewGroup parent,int viewType){View view=LayoutInflater.from(parent.getContext()).inflate(R.layout.recycle_item3,parent,false);ViewHolder viewHolder=newViewHolder(view);return viewHolder;}@OverridepublicvoidonBindViewHolder(@[email protected] holder,int position){FuritBean furit=mFruitList.get(position);
        holder.mfruitImage.setImageResource(furit.getImageId());
        holder.mfruitName.setText(furit.getName());

        holder.mfruitImage.setOnClickListener(newView.OnClickListener(){@OverridepublicvoidonClick(View view){
                furitSetOnclick.clickGetData(position2,position,holder.mfruitImage);}});
        holder.mfruitName.setOnClickListener(newView.OnClickListener(){@OverridepublicvoidonClick(View view){
                furitSetOnclick.clickGetData(position2,position,holder.mfruitName);}});}@OverridepublicintgetItemCount(){return mFruitList.size();}//  定义一个监听接口，里面有两个方法publicinterfaceFuritSetOnclick{voidclickGetData(int position,int position2,View view);}//给监听一个构造函数，提供给  MainActivity  调用publicvoidFSetonclick(FuritSetOnclick furitSetOnclick){this.furitSetOnclick=furitSetOnclick;}}

🥭🥭MainActivity.java(主函数)

packageAdapter;importandroid.view.LayoutInflater;importandroid.view.View;importandroid.view.ViewGroup;importandroid.widget.ImageView;importandroid.widget.TextView;importandroid.widget.Toast;importandroidx.annotation.NonNull;importandroidx.recyclerview.widget.RecyclerView;importcom.example.layout_test.R;importorg.jetbrains.annotations.NotNull;importjava.util.List;importdomain.FuritBean;publicclassFuritAdapter3extendsRecyclerView.Adapter<FuritAdapter3.ViewHolder>{privateList<FuritBean> mFruitList;privateFuritSetOnclick furitSetOnclick;privateint position2;staticclassViewHolderextendsRecyclerView.ViewHolder{privatefinalImageView mfruitImage;privatefinalTextView mfruitName;publicViewHolder(@NonNull@NotNullView itemView){super(itemView);
            mfruitImage= itemView.findViewById(R.id.mImg3);
            mfruitName = itemView.findViewById(R.id.mTv3);}}publicFuritAdapter3(List<FuritBean> mFruitList,int position){this.mFruitList = mFruitList;this.position2 = position;}@[email protected](@NonNull@NotNullViewGroup parent,int viewType){View view=LayoutInflater.from(parent.getContext()).inflate(R.layout.recycle_item3,parent,false);ViewHolder viewHolder=newViewHolder(view);return viewHolder;}@OverridepublicvoidonBindViewHolder(@[email protected] holder,int position){FuritBean furit=mFruitList.get(position);
        holder.mfruitImage.setImageResource(furit.getImageId());
        holder.mfruitName.setText(furit.getName());

        holder.mfruitImage.setOnClickListener(newView.OnClickListener(){@OverridepublicvoidonClick(View view){
                furitSetOnclick.clickGetData(position2,position,holder.mfruitImage);}});
        holder.mfruitName.setOnClickListener(newView.OnClickListener(){@OverridepublicvoidonClick(View view){
                furitSetOnclick.clickGetData(position2,position,holder.mfruitName);}});}@OverridepublicintgetItemCount(){return mFruitList.size();}//  定义一个监听接口，里面有两个方法publicinterfaceFuritSetOnclick{voidclickGetData(int position,int position2,View view);}//给监听一个构造函数，提供给  MainActivity  调用publicvoidFSetonclick(FuritSetOnclick furitSetOnclick){this.furitSetOnclick=furitSetOnclick;}}

🥭🥭FuritBean.java（对象的属性）

packagedomain;publicclassFuritBean{privateString name;privateintImageId;publicStringgetName(){return name;}publicintgetImageId(){returnImageId;}publicFuritBean(String name,int imageId){this.name = name;ImageId= imageId;}}

🥭🥭msgcode.java(一些常量抽取出来)

packagedomain;publicclass msgcode {publicstaticfinalintTYPE_1=0;publicstaticfinalintTYPE_2=5;publicstaticfinalintTYPE_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

<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns: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"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="80dp"android:orientation="vertical"><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/recycle_view1"android:layout_width="match_parent"android:layout_height="match_parent"/></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="400dp"><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/recycle_view2"android:layout_width="match_parent"android:layout_height="match_parent"/></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/recycle_view3"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_marginLeft="40dp"/></LinearLayout></LinearLayout>

🍗🍗item1.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><androidx.recyclerview.widget.RecyclerViewandroid: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

<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal"><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="match_parent"android:orientation="vertical"><TextViewandroid:id="@+id/mTv1"android:layout_width="match_parent"android:layout_height="30dp"android:gravity="center"android:layout_gravity="center"/><ImageViewandroid:id="@+id/mImg1"android:layout_width="50dp"android:layout_height="50dp"/></LinearLayout></LinearLayout>

🍗🍗item3.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/recycle_item2"android:layout_width="match_parent"android:layout_height="80dp"></androidx.recyclerview.widget.RecyclerView></LinearLayout>

🍗🍗recycle_item3.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="vertical"><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="vertical"android:layout_gravity="center"><ImageViewandroid:id="@+id/mImg3"android:layout_width="50dp"android:layout_height="50dp"/><TextViewandroid: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'