安卓Recycleview简单的网格布局-初学者的关键点 _recycleView

博观而约取，厚积而薄发。这篇文章主要讲述安卓Recycleview简单的网格布局-初学者的关键点相关的知识，希望能为你提供帮助。
导包

def supportVersion = \'28.0.0\' 定义常量我的sdk版本为28

implementation "com.android.support:recyclerview-v7:$supportVersion"
implementation "com.android.support:cardview-v7:$supportVersion"
implementation \'com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.42\'
implementation \'com.yqritc:recyclerview-flexibledivider:1.4.0\'
依赖代码为

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def supportVersion = \'28.0.0\' dependencies { implementation fileTree(dir: \'libs\', include: [\'*.jar\']) implementation \'androidx.appcompat:appcompat:1.0.0-beta01\' implementation \'android.arch.navigation:navigation-fragment:1.0.0-alpha09\' implementation \'androidx.constraintlayout:constraintlayout:1.1.2\' testImplementation \'junit:junit:4.12\' androidTestImplementation \'androidx.test:runner:1.1.0-alpha4\' androidTestImplementation \'androidx.test.espresso:espresso-core:3.1.0-alpha4\' implementation "com.android.support:recyclerview-v7:$supportVersion" implementation "com.android.support:cardview-v7:$supportVersion" implementation \'com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.42\' implementation \'com.yqritc:recyclerview-flexibledivider:1.4.0\'}

依赖【安卓Recycleview简单的网格布局-初学者的关键点】

Adapter代码（解释都在上面）

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package com.example.imageload.adapter; import com.chad.library.adapter.base.BaseQuickAdapter; import com.chad.library.adapter.base.BaseViewHolder; import com.example.imageload.R; import com.example.imageload.bean.GridBean; import java.util.List; //记得这里添加泛型 public class MyGridAdapter extends BaseQuickAdapter< GridBean, BaseViewHolder> { //private List data=https://www.songbingjia.com/android/null; public MyGridAdapter(int layoutResId, List data) {super(layoutResId, data); //这里设置你的布局 Main窗口传入你的数据这里转换了封装了一下传到了convert 下的GridBean item（怎么转换你不用guan） //layoutResId 为你单个属性布局的ID 假如你要再屏幕上显示5张图片这个就传入你一张图片的布局文件剩下那四张也用这个布局要跟androidx.recyclerview.widget.RecyclerView分开}@Override protected void convert(BaseViewHolder helper, GridBean item) { helper.setText(R.id.textView_list,item.getTitle()); //设置值 helper.setImageResource(R.id.img_list,item.getImageResourse()); helper.addOnClickListener(R.id.my_button); //添加事件 helper.addOnClickListener(R.id.my_button2); }}

View Codebean

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package com.example.imageload.bean; public class GridBean {private String title; privateint imageResourse; public GridBean(String title, int imageResourse) { this.title = title; this.imageResourse = imageResourse; }public String getTitle() { return title; }public void setTitle(String title) { this.title = title; }public int getImageResourse() { return imageResourse; }public void setImageResourse(int imageResourse) { this.imageResourse = imageResourse; } }

View CodeMain窗口

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package com.example.imageload; import androidx.appcompat.app.AppCompatActivity; import androidx.recyclerview.widget.GridLayoutManager; import androidx.recyclerview.widget.RecyclerView; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.Toast; import com.chad.library.adapter.base.BaseQuickAdapter; import com.example.imageload.adapter.MyGridAdapter; import com.example.imageload.bean.GridBean; import java.util.ArrayList; public class MainActivity extends AppCompatActivity { private ArrayList< GridBean> mDataList = new ArrayList< > (); //主窗口list集合 private RecyclerView recyclerView; MyGridAdapter myAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //设置主布局recyclerView = findViewById(R.id.my_list); recyclerView.setLayoutManager(new GridLayoutManager(this, 3)); initData(); initAdapter(); }private void initAdapter() { //这里问什么不用viewholder？viewhodler除了缓存？有什么用 myAdapter = new MyGridAdapter(R.layout.my_item, mDataList); myAdapter.setOnItemChildClickListener(new BaseQuickAdapter.OnItemChildClickListener() { @Override public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) { switch (view.getId()) { case R.id.my_button: Toast.makeText(MainActivity.this,"child按钮一被单机"+position,Toast.LENGTH_SHORT).show(); break; caseR.id.my_button2: Toast.makeText(MainActivity.this,"按钮2被单机"+position,Toast.LENGTH_SHORT).show(); break; }} }); myAdapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() { @Override public void onItemClick(BaseQuickAdapter adapter, View view, int position) {switch (position) { case 0: //Intent intent= new Intent(); //intent.setClass(MainActivity.this,SectionActivity.class); //startActivity(intent); break; } Toast.makeText(MainActivity.this,"你点击了"+position,Toast.LENGTH_SHORT).show(); } }); recyclerView.setAdapter(myAdapter); //记得add Log.i("Mainact","初始化adapter"); }privatevoid initData() { for (int i=0; i< 10; i++) { GridBean b=new GridBean("第"+i+"个例子",R.mipmap.ic_launcher); mDataList.add(b); }} }

View Code主布局文件 activity_main.xml

< ?xml version="1.0" encoding="utf-8"?> < LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> < androidx.recyclerview.widget.RecyclerView android:id="@+id/my_list" android:layout_width="match_parent" android:layout_height="match_parent" /> < /LinearLayout>

单个布局文件my_item.xml

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< ?xml version="1.0" encoding="utf-8"?> < androidx.cardview.widget.CardView android:id="@+id/card_view" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:foreground="?android:attr/selectableItemBackground" xmlns:android="http://schemas.android.com/apk/res/android" > < LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"> < /LinearLayout> < LinearLayout android:layout_gravity="center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> < TextView android:id="@+id/dialog" android:layout_width="80dp" android:layout_height="80dp" android:layout_centerInParent="true" android:background="#9DDE76" android:gravity="center" android:textColor="#ffffffff" android:textSize="30dp" android:visibility="invisible" /> < ImageView android:id="@+id/img_list" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:src="https://www.songbingjia.com/android/@android:mipmap/sym_def_app_icon" /> < TextView android:id="@+id/textView_list" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="TextView" android:layout_gravity="center" android:textAlignment="center" /> < Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:id="@+id/my_button" android:text="点我测试" /> < Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:id="@+id/my_button2" android:text="点我测试2" /> < /LinearLayout> < /androidx.cardview.widget.CardView>

View Code理解就很好理解了不贴代码了贴图（添加装饰什么的百度，上面也有点我注释了）