文章目录
- 结合databinding，livedata
- BaseViewHolder
- BaseAdapter
- recycleView通用adapter
- 使用
- ViewModel
- 绑定item_layout布局
- activity中使用
结合databinding，livedata
implementation "androidx.lifecycle:lifecycle-extensions:2.1.0"
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.1.0"
BaseViewHolder
package com.beans.base.recycle
import androidx.databinding.ViewDataBinding
import androidx.recyclerview.widget.RecyclerView
/**
* @Author yangtianfu
* @CreateTime 2020/4/2 16:56
* @Describe recycleView封装ViewHolder
*/
open class BaseViewHolder(var dataBinding: ViewDataBinding):RecyclerView.ViewHolder(dataBinding.root) {
}
BaseAdapter
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.databinding.DataBindingUtil
import androidx.recyclerview.widget.RecyclerView
/**
* @Author yangtianfu
* @CreateTime 2020/4/2 16:50
* @Describe recycleView统配adapter
*/
abstract class BaseAdapter(var data: List = listOf()):RecyclerView.Adapter() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder{
return BaseViewHolder(DataBindingUtil.inflate(LayoutInflater.from(parent?.context), viewType, parent, false))
}
override fun getItemCount(): Int {
return data.size
}
fun refreshData(newData: List) {
this.data = newData
this.notifyDataSetChanged()
}
// 增加点击和长按事件
interface OnItemClickListener {
fun onItemClick(view: View, position: Int)
// fun onItemLongClick(view: View,position: Int): Boolean
}
}
recycleView通用adapter
package com.beans.server.ui.adapter
import androidx.databinding.ViewDataBinding
import com.aquila.lib.logE
import com.beans.base.recycle.BaseAdapter
import com.beans.base.recycle.BaseViewHolder
import com.beans.server.R
import com.beans.server.BR
import com.beans.server.bean.OwnerManualBean
/**
* @Author yangtianfu
* @CreateTime 2020/4/2 16:59
* @Describe recycleView通用adapter
*/
class MyAdapter constructor(layout:Int) : BaseAdapter() {
var layout:Int = layout //代替下方init方法 constructor(layout:Int)为主构造函数
// init {
// 主构造函数执行后执行
// this.layout = layout
// }
private lateinit var onItemClickListener: OnItemClickListener
fun setOnItemClickListener(listener: OnItemClickListener) {
this.onItemClickListener = listener
}
override fun onBindViewHolder(holder: BaseViewHolder, position: Int) {
var binding : ViewDataBinding = holder.dataBinding
binding.setVariable(BR.myData,data.get(position))
holder.itemView.setOnClickListener {
onItemClickListener.onItemClick(holder.itemView,position)
}
}
override fun getItemViewType(position: Int): Int {
return this.layout
// return R.layout.server_owner_dash_board_item
}
}
使用
数据bean
import java.io.Serializable
open class BaseDto:Serializable {
}
import com.beans.base.bean.BaseDto
/**
* @Author yangtianfu
* @CreateTime 2020/4/2 16:43
* @Describe
*/
data class OwnerBean(
var name:String?,
var img:Int?
):BaseDto()
ViewModel
//此处封装与网络请求相关，暂时不用
import androidx.lifecycle.LifecycleOwner
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.ViewModel
import com.beans.base.net.NetService
open class BaseModel : ViewModel() {
lateinit var owner: LifecycleOwner
//网络请求状态数据，页面中可以监听这个数据完成状态的切换，空页面，loading 重试等等
var status: MutableLiveData = MutableLiveData()
protected fun getService(c: Class): T = NetService.getRetrofitService(c)
//访问老接口
protected fun getOldService(c: Class): T = NetService.getOldRetrofitService(c)
}
import androidx.lifecycle.MutableLiveData
import com.beans.server.R
import com.beans.server.bean.OwnerDashBoardBean
import com.beans.server.bean.OwnerManualBean
import com.mobile.base.BaseModel
/**
* @Author yangtianfu
* @CreateTime 2020/4/2 15:23
* @Describe 通配相关vm，用于获取数据并将数据赋值给livedata用于监听数据改变通知UI进行更新 ，暂时与网络请求无关，所以不继承BaseModel而是继承ViewModel
*/
class OwnerManualModel :ViewModel(){
//手册详情数据
var listDashBoards = MutableLiveData>()
//仪表盘数据
var listManuals = MutableLiveData>()
//获取手册集
fun getDashBoardData(){
var data = listOf(
OwnerDashBoardBean("转向指示灯","转向灯工作时，相应的转向指示灯闪烁。按下危险警告按钮时，转向指示灯及车外所有的转向灯将一起闪烁",R.mipmap.server_dash_board),
OwnerDashBoardBean("转向指示灯","转向灯工作时，相应的转向指示灯闪烁。按下危险警告按钮时，转向指示灯及车外所有的转向灯将一起闪烁",R.mipmap.server_dash_board),
OwnerDashBoardBean("转向指示灯","转向灯工作时，相应的转向指示灯闪烁。按下危险警告按钮时，转向指示灯及车外所有的转向灯将一起闪烁",R.mipmap.server_dash_board),
OwnerDashBoardBean("转向指示灯","转向灯工作时，相应的转向指示灯闪烁。按下危险警告按钮时，转向指示灯及车外所有的转向灯将一起闪烁",R.mipmap.server_dash_board),
OwnerDashBoardBean("转向指示灯","转向灯工作时，相应的转向指示灯闪烁。按下危险警告按钮时，转向指示灯及车外所有的转向灯将一起闪烁",R.mipmap.server_dash_board),
OwnerDashBoardBean("转向指示灯","转向灯工作时，相应的转向指示灯闪烁。按下危险警告按钮时，转向指示灯及车外所有的转向灯将一起闪烁",R.mipmap.server_dash_board),
OwnerDashBoardBean("转向指示灯","转向灯工作时，相应的转向指示灯闪烁。按下危险警告按钮时，转向指示灯及车外所有的转向灯将一起闪烁",R.mipmap.server_dash_board)
)
listDashBoards.value = data
}
//获取手册集
fun getManualsData(){
var data = listOf(
OwnerManualBean("仪表盘",R.mipmap.server_dash_board),
OwnerManualBean("车型说明",R.mipmap.server_dash_board),
OwnerManualBean("书签",R.mipmap.server_book_mark),
OwnerManualBean("快速入门",R.mipmap.server_dash_board)
)
listManuals.value = data
}
}
绑定item_layout布局
activity中使用
lateinit var ownerManualModel:OwnerManualModel
private var mAdapter : MyAdapter? =null
、、、
ownerManualModel = ViewModelProviders.of(this).get(OwnerManualModel::class.java)
ownerManualModel.getManualsData()
val layoutManager = LinearLayoutManager(this)
mBinding.recyclerManual.layoutManager = layoutManager
mAdapter = MyAdapter(R.layout.server_owner_manule_item)
mBinding.recyclerManual.adapter = mAdapter
mAdapter?.setOnItemClickListener(object : BaseAdapter.OnItemClickListener {
override fun onItemClick(view: View, position: Int) {
ToastUtils.s(this@ServerOwnerManualActivity,"点击 ${position}")
}
})
ownerManualModel.listManuals.observe(this,
Observer {
//此处更新UI，将数据赋值并更新adapter
mAdapter!!.refreshData(it)
mAdapter?.notifyDataSetChanged()
})
