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
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
