简化RecyclerView接入流程
- 在build.gradle文件中添加引用
# project build.gradle
allprojects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}
# module build.gralde
dependencies {
...
implementation 'com.github.mengxn:BetterAdapter:1.0.4'
}-
代码中创建Adapter
- 单类型
recyclerView.adapter = SingleAdapter<String>(R.layout.item_main_1) { holder -> // do something // holder.data 为数据源，holder.setXXX 为快捷方式 holder.getView(id) 获取指定ID的View // way 1 holder.itemView.contentTv.text = holder.data // way 2 holder.setText(R.id.contentTv, holder.data) // way 3 holder.getView<TextView>(R.id.contentTv).text = holder.data }
- 单类型（支持 DataBinding）
recyclerView.adapter = SingleAdapter2<ItemMain3Binding, String>(R.layout.item_main_3) { holder -> // do something // holder.data 为数据源，holder.getBinding() 为ViewBinding // example holder.getBinding().contentTv.text = holder.data }
- 多类型（支持 DataBinding）
MultiAdapter<Animal> { makeViewType { data -> when (data) { is Dog -> 1 is Cat -> 2 is Pig -> 3 } } addViewHolder(1, R.layout.item_main_3) { holder -> val dog = holder.data as? Dog (holder.getBinding() as ItemMain3Binding).contentTv.text = dog?.getName() } addViewHolder(2, R.layout.item_main_3) { holder -> val cat = holder.data as? Cat (holder.getBinding() as ItemMain3Binding).contentTv.text = cat?.getName() } addViewHolder(3, R.layout.item_main_3) { holder -> val pig = holder.data as? Pig (holder.getBinding() as ItemMain3Binding).contentTv.text = pig?.getName() } }
- 自定义Adapter（多类型）
class AnimalAdapter : BetterAdapter<Animal>() { companion object { private const val TYPE_DOG = 1 private const val TYPE_CAT = 2 } // 自定义规则进行区分类型 override fun getItemViewType(position: Int): Int { return when (getItem(position)) { is Dog -> TYPE_DOG else -> TYPE_CAT } } override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder<Animal> { return when (viewType) { TYPE_DOG -> DotViewHolder(inflateChildView(parent, R.layout.item_main_1)) else -> CatViewHolder(inflateChildView(parent, R.layout.item_main_2)) } } class DotViewHolder(view: View) : ViewHolder<Animal>(view) { // 绑定数据 override fun bind(data: Animal) { super.bind(data) setText(R.id.contentTv, data.getName()) } } class CatViewHolder(view: View) : ViewHolder<Animal>(view) { // 绑定数据 override fun bind(data: Animal) { super.bind(data) setText(R.id.adTv, data.getName()) } } }