package com.example.firstapp.ui.invitation
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import android.content.Context
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import android.os.Bundle
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import android.os.Handler
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import android.os.Looper
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import android.text.Html
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import android.util.TypedValue
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import android.view.View
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import android.widget.TextView
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import androidx.appcompat.app.AppCompatActivity
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import androidx.recyclerview.widget.LinearLayoutManager
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import androidx.recyclerview.widget.LinearSmoothScroller
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import androidx.recyclerview.widget.RecyclerView
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import com.example.firstapp.R
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import com.example.firstapp.adapter.InvitationAdapter
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import com.example.firstapp.adapter.InvitationRecordAdapter
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import com.example.firstapp.entity.InvitationRecord
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import kotlin.math.abs
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class InvitationActivity : AppCompatActivity() {
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private lateinit var recyclerSuccessView: RecyclerView
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private lateinit var recyclerRecordView: RecyclerView
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private lateinit var adapter: InvitationAdapter
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private lateinit var recordadapter: InvitationRecordAdapter
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private val data = mutableListOf<InvitationRecord>()
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private val recorddata = mutableListOf<InvitationRecord>()
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private val handler = Handler(Looper.getMainLooper())
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private val scrollInterval = 3000L
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private var currentScrollPosition = 0
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private var currentRecordScrollPosition = 0
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private var itemHeight = 0 // 动态存储item高度
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_invitation_main)
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// 初始化视图
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initViews()
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//初始化Adapter
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initSuccessAdapter()
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initRecorddapter()
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//加载数据
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loadData()
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loadRecordData()
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//启动轮播
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startAutoScroll()
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}
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private fun initViews() {
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findViewById<TextView>(R.id.tv_notic).apply {
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text = Html.fromHtml(getString(R.string.invite_reward_text), Html.FROM_HTML_MODE_LEGACY)
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}
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recyclerSuccessView = findViewById(R.id.invitationsuccessRecyclerView)
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addSuccessListener()
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recyclerRecordView = findViewById(R.id.invitationrecordRecyclerView)
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addRecordListener()
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}
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private fun addSuccessListener(){
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recyclerSuccessView.viewTreeObserver.addOnGlobalLayoutListener {
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if (recyclerSuccessView.childCount > 0) {
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// 计算预期高度（60dp转px）
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val expectedHeight = dpToPx(60f)
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if(itemHeight!= expectedHeight){
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// 修正所有item的高度
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for (i in 0 until recyclerSuccessView.childCount) {
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recyclerSuccessView.getChildAt(i).layoutParams.height = expectedHeight
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}
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// 请求重新布局
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recyclerSuccessView.requestLayout()
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itemHeight = expectedHeight
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}
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}
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}
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recyclerSuccessView.layoutManager = object : LinearLayoutManager(this@InvitationActivity) {
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override fun onMeasure(
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recycler: RecyclerView.Recycler, state: RecyclerView.State,
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widthSpec: Int, heightSpec: Int
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) {
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if (itemHeight > 0) {
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// 使用实际测量的高度
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setMeasuredDimension(
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View.resolveSize(widthSpec, width),
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itemHeight
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)
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} else {
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// 默认高度60dp
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val defaultHeight = TypedValue.applyDimension(
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TypedValue.COMPLEX_UNIT_DIP, 60f,
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resources.displayMetrics
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).toInt()
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setMeasuredDimension(
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View.resolveSize(widthSpec, width),
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defaultHeight
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)
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}
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}
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}
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}
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private fun addRecordListener(){
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recyclerRecordView.viewTreeObserver.addOnGlobalLayoutListener {
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if (recyclerSuccessView.childCount > 0) {
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// 计算预期高度（60dp转px）
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val expectedHeight = dpToPx(60f)
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if(itemHeight!= expectedHeight){
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// 修正所有item的高度
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for (i in 0 until recyclerSuccessView.childCount) {
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recyclerSuccessView.getChildAt(i).layoutParams.height = expectedHeight
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}
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// 请求重新布局
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recyclerSuccessView.requestLayout()
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itemHeight = expectedHeight
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}
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}
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}
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recyclerRecordView.layoutManager = object : LinearLayoutManager(this@InvitationActivity) {
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override fun onMeasure(
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recycler: RecyclerView.Recycler, state: RecyclerView.State,
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widthSpec: Int, heightSpec: Int
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) {
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if (itemHeight > 0) {
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// 使用实际测量的高度
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setMeasuredDimension(
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View.resolveSize(widthSpec, width),
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itemHeight
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)
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} else {
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// 默认高度60dp
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val defaultHeight = TypedValue.applyDimension(
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TypedValue.COMPLEX_UNIT_DIP, 60f,
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resources.displayMetrics
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).toInt()
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setMeasuredDimension(
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View.resolveSize(widthSpec, width),
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defaultHeight
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)
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}
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}
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}
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}
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private fun initSuccessAdapter() {
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adapter = InvitationAdapter(this, data).apply {
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registerAdapterDataObserver(object : RecyclerView.AdapterDataObserver() {
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override fun onItemRangeInserted(positionStart: Int, itemCount: Int) {
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// 数据插入时检查高度
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recyclerSuccessView.post {
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if (recyclerSuccessView.childCount > 0) {
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itemHeight = recyclerSuccessView.getChildAt(0).height
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}
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}
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}
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})
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}
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recyclerSuccessView.adapter = adapter
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}
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private fun initRecorddapter() {
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recordadapter = InvitationRecordAdapter(this, recorddata).apply {
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registerAdapterDataObserver(object : RecyclerView.AdapterDataObserver() {
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override fun onItemRangeInserted(positionStart: Int, itemCount: Int) {
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// 数据插入时检查高度
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recyclerRecordView.post {
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if (recyclerRecordView.childCount > 0) {
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itemHeight = recyclerRecordView.getChildAt(0).height
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}
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}
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}
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})
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}
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recyclerRecordView.adapter = recordadapter
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}
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private fun loadData() {
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data.clear()
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data.addAll(
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listOf(
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InvitationRecord("H****e", "获得了1天会员","已注册"),
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InvitationRecord("U****r", "获得了2天会员","已注册"),
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InvitationRecord("A****e", "获得了免广告特权","已注册"),
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InvitationRecord("B****e", "获得了3天会员","已注册"),
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InvitationRecord("C****o", "获得了4天会员","已注册")
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)
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)
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adapter.notifyDataSetChanged()
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}
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private fun loadRecordData() {
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recorddata.clear()
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recorddata.addAll(
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listOf(
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InvitationRecord("M****e", "","未注册"),
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InvitationRecord("Q****r", "","已注册"),
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InvitationRecord("W****e", "","未注册"),
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InvitationRecord("E****e", "","未注册"),
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InvitationRecord("R****o", "","已注册")
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)
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)
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recordadapter.notifyDataSetChanged()
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}
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private val scrollRunnable = object : Runnable {
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override fun run() {
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if (data.isEmpty() || itemHeight <= 0) {
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handler.postDelayed(this, scrollInterval)
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return
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}
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// 使用取模运算确保位置在有效范围内
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currentScrollPosition++
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currentRecordScrollPosition++
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// 创建自定义平滑滚动器
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val smoothScroller = object : LinearSmoothScroller(this@InvitationActivity) {
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override fun getVerticalSnapPreference(): Int = SNAP_TO_START
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override fun calculateDyToMakeVisible(view: View, snapPreference: Int): Int {
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// 计算需要滚动的距离，确保完整显示下一个item
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val top = view.top
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val height = view.height
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return when {
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snapPreference == SNAP_TO_START -> -top
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snapPreference == SNAP_TO_END -> -(top - (recyclerSuccessView.height - height))
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else -> -(top - (recyclerSuccessView.height / 2 - height / 2))
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}
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}
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override fun calculateTimeForScrolling(dx: Int): Int {
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// 根据滚动距离动态计算时间，保持匀速
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return maxOf((500f * abs(dx) / itemHeight).toInt(), 200)
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}
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}.apply {
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targetPosition = currentScrollPosition
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}
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val smoothRecordScroller = object : LinearSmoothScroller(this@InvitationActivity) {
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override fun getVerticalSnapPreference(): Int = SNAP_TO_START
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override fun calculateDyToMakeVisible(view: View, snapPreference: Int): Int {
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// 计算需要滚动的距离，确保完整显示下一个item
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val top = view.top
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val height = view.height
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return when {
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snapPreference == SNAP_TO_START -> -top
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snapPreference == SNAP_TO_END -> -(top - (recyclerRecordView.height - height))
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else -> -(top - (recyclerRecordView.height / 2 - height / 2))
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}
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}
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override fun calculateTimeForScrolling(dx: Int): Int {
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// 根据滚动距离动态计算时间，保持匀速
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return maxOf((500f * abs(dx) / itemHeight).toInt(), 200)
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}
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}.apply {
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targetPosition = currentRecordScrollPosition
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}
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// 启动平滑滚动
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recyclerSuccessView.layoutManager?.startSmoothScroll(smoothScroller)
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recyclerRecordView.layoutManager?.startSmoothScroll(smoothRecordScroller)
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// 更智能的边界检测
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(recyclerSuccessView.layoutManager as? LinearLayoutManager)?.let { lm ->
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val lastVisible = lm.findLastVisibleItemPosition()
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val totalItems = adapter.itemCount
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// 当接近"虚拟列表"末尾时，跳转到中间位置
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if (lastVisible >= totalItems - 3) {
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val jumpPosition = (totalItems / 2) * (Int.MAX_VALUE / totalItems)
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currentScrollPosition = jumpPosition
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recyclerSuccessView.scrollToPosition(jumpPosition)
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}
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}
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(recyclerRecordView.layoutManager as? LinearLayoutManager)?.let { lm ->
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val lastVisible = lm.findLastVisibleItemPosition()
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val totalItems = recordadapter.itemCount
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// 当接近"虚拟列表"末尾时，跳转到中间位置
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if (lastVisible >= totalItems - 3) {
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val jumpPosition = (totalItems / 2) * (Int.MAX_VALUE / totalItems)
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currentRecordScrollPosition = jumpPosition
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recyclerRecordView.scrollToPosition(jumpPosition)
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}
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}
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handler.postDelayed(this, scrollInterval)
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}
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}
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private fun pxToDp(px: Int, context: Context): Int {
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return (px / (context.resources.displayMetrics.density)).toInt()
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}
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private fun dpToPx(dp: Float): Int {
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return (dp * resources.displayMetrics.density).toInt()
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}
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private fun startAutoScroll() {
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handler.removeCallbacks(scrollRunnable) // 先移除之前的回调
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handler.postDelayed(scrollRunnable, scrollInterval)
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}
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override fun onPause() {
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handler.removeCallbacks(scrollRunnable)
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super.onPause()
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}
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override fun onResume() {
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super.onResume()
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startAutoScroll()
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}
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}
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