【Android】RecyclerView常规写法(竖向,横向) |
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【Android】RecyclerView常规写法(竖向,横向)
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RecyclerView常规写法-竖向,横向
代码 竖向 gradle(moude): implementation 'androidx.recyclerview:recyclerview:1.2.0-alpha04'//RecyclerView布局 Menifest: Layout:fruit_recyclerview_item: activity_recyclerview: Kotlin:Fruit: class Fruit(val name:String,val imageId:Int)RecyclerViewAdapter: package com.mozhimen.myapplication.recyclerView 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 androidx.recyclerview.widget.RecyclerView import com.mozhimen.myapplication.R import com.mozhimen.myapplication.common.Fruit class RecyclerViewAdapter(private val fruitList: List) : RecyclerView.Adapter() { inner class ViewHolder(view: View) : RecyclerView.ViewHolder(view) { val fruitImage: ImageView = view.findViewById(R.id.fruit_recyclerview_image) val fruitName: TextView = view.findViewById(R.id.fruit_recyclerview_name) } override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder { val view = LayoutInflater.from(parent.context) .inflate(R.layout.fruit_recyclerview_item, parent, false) return ViewHolder(view) } override fun onBindViewHolder(holder: ViewHolder, position: Int) { val fruit = fruitList[position] holder.fruitImage.setImageResource(fruit.imageId) holder.fruitName.text = fruit.name holder.itemView.setOnClickListener { val position=holder.bindingAdapterPosition Log.d("Tag",position.toString()) } holder.fruitImage.setOnClickListener { val position=holder.bindingAdapterPosition Log.d("Tag",position.toString()) } } override fun getItemCount() = fruitList.size }RecyclerViewActivity: class RecyclerViewActivity : AppCompatActivity() { private lateinit var recyclerviewBinding: ActivityRecyclerviewBinding private val fruitList = ArrayList() override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) recyclerviewBinding = ActivityRecyclerviewBinding.inflate(layoutInflater) setContentView(recyclerviewBinding.root) initFruits() val layoutManager=LinearLayoutManager(this) recyclerviewBinding.recyclerRecyclerView.layoutManager=layoutManager val adapter=RecyclerViewAdapter(fruitList) recyclerviewBinding.recyclerRecyclerView.adapter=adapter } private fun initFruits() { repeat(2) { fruitList.apply { add(Fruit("Apple", R.drawable.fruit)) add(Fruit("Pear", R.drawable.fruit)) add(Fruit("Banana", R.drawable.fruit)) add(Fruit("Watermelon", R.drawable.fruit)) add(Fruit("Orange", R.drawable.fruit)) add(Fruit("Grape", R.drawable.fruit)) add(Fruit("Pineapple", R.drawable.fruit)) add(Fruit("Strawberry", R.drawable.fruit)) add(Fruit("Cherry", R.drawable.fruit)) add(Fruit("Mango", R.drawable.fruit)) } } } }竖向 Menifest: Layout:fruit_recyclerview_item_horizontal: Kotlin:RecyclerViewHorizontalAdapter: class RecyclerViewHorizontalAdapter(private val fruitList: List) : RecyclerView.Adapter() { inner class ViewHolder(view: View) : RecyclerView.ViewHolder(view) { val fruitImage: ImageView = view.findViewById(R.id.fruit_recyclerview_horizontal_image) val fruitName: TextView = view.findViewById(R.id.fruit_recyclerview_horizontal__name) } override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder { val view = LayoutInflater.from(parent.context) .inflate(R.layout.fruit_recyclerview_item_horizontal, parent, false) return ViewHolder(view) } override fun onBindViewHolder(holder: ViewHolder, position: Int) { val fruit = fruitList[position] holder.fruitImage.setImageResource(fruit.imageId) holder.fruitName.text = fruit.name } override fun getItemCount() = fruitList.size }RecyclerViewHorizontalActivity: initFruits() val layoutManager= LinearLayoutManager(this) layoutManager.orientation=LinearLayoutManager.HORIZONTAL recyclerviewBinding.recyclerRecyclerView.layoutManager=layoutManager val adapter=RecyclerViewHorizontalAdapter(fruitList) recyclerviewBinding.recyclerRecyclerView.adapter=adapter效果: 横向 |
竖向 
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