🥭🥭简介
分享一下recycleView在同一个页面中(一个recycleView中实现三种不同的布局方式)。三种布局一种是横着划,竖着划和GridView三种布局,代码全部粘在下面了,需要自取。
🍓🍓第一种是竖着滑动,和listView差不多。自我感觉,比ListView复杂。
🍓🍓第二种是横着滑。自我感觉,ListView虽然也可以实现,但是比起RecycleView难度和繁琐度都上了一个等级。这可能也是现在大部分人都用RecycleView的原因之一吧,当然recycleView还有很多优势。
🍓🍓第三种就是gridView布局了,也就是Android中常说的九宫格布局了。
RecycleView它可以实现与ListView和GridView一样的效果,提供了一种插拔式的体验,高度的解耦,异常的灵活,adpter适配器自己定制。只需设置其提供的不同的LayoutManager,ItemAnimator和ItemDecoration,就能实现不同的效果。
🍓🍓 RecyclerView的优点
🍗🍗1、支持局部刷新。
🍗🍗2、可以自定义item增删时的动画。
🍗🍗3、能够实现item拖拽和侧滑删除等功能。
🍗🍗4、默认已实现View的复用,而且回收机制更加完善。
🥭🥭效果图
🥭🥭代码
三个Adapter修饰器
FruitAdapter
package Adapter; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; 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 FruitAdapter extends RecyclerView.Adapter<FruitAdapter.ViewHolder> { private List<FuritBean> mFruitList; static class ViewHolder extends RecyclerView.ViewHolder{ private final ImageView mfruitImage; private final TextView mfruitName; public ViewHolder(@NonNull @NotNull View view) { super(view); mfruitImage=view.findViewById(R.id.mImg1); mfruitName=view.findViewById(R.id.mTv1); } } public FruitAdapter(List<FuritBean> fruitList){ mFruitList=fruitList; } @NonNull @NotNull @Override public ViewHolder onCreateViewHolder(@NonNull @NotNull ViewGroup parent, int viewType) { View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.recycle_item1,parent,false); ViewHolder holder=new ViewHolder(view); return holder; } @Override public void onBindViewHolder(@NonNull @NotNull FruitAdapter.ViewHolder holder, int position) { FuritBean furit=mFruitList.get(position); holder.mfruitImage.setImageResource(furit.getImageId()); holder.mfruitName.setText(furit.getName()); } @Override public int getItemCount() { return mFruitList.size(); } }
FruitAdapter2
package Adapter; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; 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 FuritAdapter2 extends RecyclerView.Adapter<FuritAdapter2.ViewHolder> { private List<FuritBean> mFruitList; 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.mImg2); mfruitName = itemView.findViewById(R.id.mTv2); } } public FuritAdapter2(List<FuritBean> mFruitList) { this.mFruitList = mFruitList; } @NonNull @Override public FuritAdapter2.ViewHolder onCreateViewHolder(@NonNull @NotNull ViewGroup parent, int viewType) { View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.recycle_item2,parent,false); ViewHolder viewHolder=new ViewHolder(view); return viewHolder; } @Override public void onBindViewHolder(@NonNull @NotNull FuritAdapter2.ViewHolder holder, int position) { FuritBean furit=mFruitList.get(position); holder.mfruitImage.setImageResource(furit.getImageId()); holder.mfruitName.setText(furit.getName()); } @Override public int getItemCount() { return mFruitList.size(); } }
FruitAdapter3
package Adapter; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; 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; 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) { this.mFruitList = mFruitList; } @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()); } @Override public int getItemCount() { return mFruitList.size(); } }
个Adapter修饰器修饰了不同的布局,每一个布局都是单独修饰的,当然也可以放到一个布局里面。下面一篇文章会将所有的布局放在一个Adapter修饰器里面进行。
MainActivity
主界面函数 && FuritBean
package com.example.layout_test; import androidx.appcompat.app.AppCompatActivity; import androidx.recyclerview.widget.GridLayoutManager; import androidx.recyclerview.widget.LinearLayoutManager; import androidx.recyclerview.widget.RecyclerView; import android.Manifest; import android.icu.text.UnicodeSetSpanner; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; import com.google.android.material.tabs.TabLayout; import org.w3c.dom.Text; import java.util.ArrayList; import java.util.List; //import Adapter.AllAdapter; //import Adapter.AllAdapter; import Adapter.FruitAdapter; import Adapter.FuritAdapter2; import Adapter.FuritAdapter3; import domain.FuritBean; public class MainActivity extends AppCompatActivity{ private List<FuritBean> furitBeans= new ArrayList(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initData(); /** * todo ListView 滑动 */ // recycleView 横着滑 RecyclerView recyclerView1=findViewById(R.id.recycle_view1); LinearLayoutManager layoutManager2=new LinearLayoutManager(this); layoutManager2.setOrientation(LinearLayoutManager.HORIZONTAL); recyclerView1.setLayoutManager(layoutManager2); FuritAdapter2 furitAdapter2=new FuritAdapter2(furitBeans); recyclerView1.setAdapter(furitAdapter2); // recycleView 竖着划 RecyclerView recyclerView=findViewById(R.id.recycle_view2); LinearLayoutManager layoutManager=new LinearLayoutManager(this); recyclerView.setLayoutManager(layoutManager); FruitAdapter fruitAdapter=new FruitAdapter(furitBeans); recyclerView.setAdapter(fruitAdapter); /** * todo GridView RecycleView 九宫格 */ RecyclerView recyclerView3=findViewById(R.id.recycle_view3); GridLayoutManager gridLayoutManager=new GridLayoutManager(this,4); recyclerView3.setLayoutManager(gridLayoutManager); FuritAdapter3 adapter=new FuritAdapter3(furitBeans); recyclerView3.setAdapter(adapter); } // 数据 private void initData() { for (int i = 0; i <= 4; i++) { FuritBean furitBean=new FuritBean("cm",R.drawable.cm); furitBeans.add(furitBean); FuritBean furitBean1=new FuritBean("cz",R.drawable.cz); furitBeans.add(furitBean1); FuritBean furitBean2=new FuritBean("mht",R.drawable.mht); furitBeans.add(furitBean2); FuritBean furitBean3=new FuritBean("nyg",R.drawable.nyg); furitBeans.add(furitBean3); FuritBean furitBean4=new FuritBean("pg",R.drawable.pg); furitBeans.add(furitBean4); FuritBean furitBean5=new FuritBean("pt",R.drawable.pt); furitBeans.add(furitBean5); FuritBean furitBean6=new FuritBean("sl",R.drawable.sl); furitBeans.add(furitBean6); FuritBean furitBean7=new FuritBean("yt",R.drawable.yt); furitBeans.add(furitBean7); } } }
FuritBean
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; } }
布局文件
activity_main
<?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>
recycle_item1
<?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="wrap_content" android:orientation="horizontal"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal"> <ImageView android:id="@+id/mImg1" android:layout_width="50dp" android:layout_height="50dp" /> <TextView android:id="@+id/mTv1" android:layout_width="match_parent" android:layout_height="30dp" android:gravity="center" android:layout_gravity="center"/> </LinearLayout> </LinearLayout>
recycle_item2
<?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="match_parent" android:orientation="vertical"> <LinearLayout android:layout_width="50dp" android:layout_height="80dp" android:orientation="vertical"> <ImageView android:id="@+id/mImg2" android:layout_width="50dp" android:layout_height="50dp" /> <TextView android:id="@+id/mTv2" android:layout_width="50dp" android:layout_height="30dp" android:gravity="center"/> </LinearLayout> </LinearLayout>
recycle_item3
<?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>