文章目录
🍓🍓简述
🍓🍓效果图
🍓🍓代码
🥭🥭AllAdapter.java
🥭🥭 FuritAdapter3.java
🥭🥭MainActivity.java(主函数)
🥭🥭FuritBean.java(对象的属性)
🥭🥭msgcode.java(一些常量抽取出来)
🥭🥭传值
🍓🍓xml布局
🍗🍗activity_main.xml
🍗🍗item1.xml
🍗🍗item2.xml
🍗🍗item3.xml
🍗🍗recycle_item3.xml
🍓🍓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); /** * 取得数据 */ 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
<?xml version="1.0" encoding="utf-8"?> <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
<?xml version="1.0" encoding="utf-8"?> <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
<?xml version="1.0" encoding="utf-8"?> <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
<?xml version="1.0" encoding="utf-8"?> <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
<?xml version="1.0" encoding="utf-8"?> <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'