导入依赖：
implementation "androidx.recyclerview:recyclerview:1.1.0" implementation "androidx.cardview:cardview:1.0.0"activity：
package com.example.zkotlin import android.os.Bundle import androidx.appcompat.app.AppCompatActivity import androidx.recyclerview.widget.LinearLayoutManager import kotlinx.android.synthetic.main.activity_weather.* class WeatherActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_weather) val examplelist = generateDummyList(50) recycler_view.adapter = ExampleAdapter(examplelist) recycler_view.layoutManager = LinearLayoutManager(this) recycler_view.setHasFixedSize(true) } private fun generateDummyList(size: Int): List<ExampleItem> { val list = ArrayList<ExampleItem>() for (i in 0 until size) { val drawable = when (i % 3) { 0 -> R.drawable.ic_android 1 -> R.drawable.ic_audio 2 -> R.drawable.ic_sun else -> R.mipmap.ic_launcher } val item = ExampleItem(drawable, "Item $i", "Line 2 ") list += item } return list } }数据类：
package com.example.zkotlin data class ExampleItem(val imageResuorce: Int, val text1: String, val text2: String)适配器：
package com.example.zkotlin import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import android.widget.ImageView import android.widget.TextView import androidx.recyclerview.widget.RecyclerView import kotlinx.android.synthetic.main.example_item.view.* class ExampleAdapter(private val exampleList: List<ExampleItem>) : RecyclerView.Adapter<ExampleAdapter.ExampleViewHolder>() { class ExampleViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) { val imageView: ImageView = itemView.image_view val textView1: TextView = itemView.text_view_1 val textView2: TextView = itemView.text_view_2 } override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ExampleViewHolder { val itemView = LayoutInflater.from(parent.context).inflate(R.layout.example_item, parent, false) return ExampleViewHolder(itemView) } override fun getItemCount(): Int { return exampleList.size } override fun onBindViewHolder(holder: ExampleViewHolder, position: Int) { val currentItem = exampleList[position] holder.imageView.setImageResource(currentItem.imageResuorce) holder.textView1.text = currentItem.text1 holder.textView2.text = currentItem.text2 } }activity布局：
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout 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"> <androidx.recyclerview.widget.RecyclerView android:id="@+id/recycler_view" android:layout_width="match_parent" android:layout_height="match_parent" android:clipToPadding="false" android:padding="4dp" tools:listitem="@layout/example_item" /> </RelativeLayout>item布局:
<?xml version="1.0" encoding="utf-8"?> <androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="60dp" android:layout_margin="4dp"> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent" android:padding="8dp"> <ImageView android:id="@+id/image_view" android:layout_width="50dp" android:layout_height="50dp" android:layout_marginEnd="8dp" android:src="@mipmap/ic_launcher" /> <TextView android:id="@+id/text_view_1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toEndOf="@+id/image_view" android:text="line 1" android:textColor="@android:color/black" android:textSize="18sp" android:textStyle="bold" /> <TextView android:id="@+id/text_view_2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/text_view_1" android:layout_toEndOf="@id/image_view" android:text="line 2" /> </RelativeLayout> </androidx.cardview.widget.CardView>效果图：
