update

app/src/main/java/com/base/browserwhite/ui/activity/webbrowser/WebViewFragment.kt

 package com.base.browserwhite.ui.activity.webbrowser
 
+import android.animation.Animator
+import android.animation.AnimatorSet
+import android.animation.ObjectAnimator
 import android.annotation.SuppressLint
 import android.app.Dialog
 import android.content.Context
 import android.net.Uri
 import android.net.http.SslError
 import android.view.View
+import android.view.animation.AccelerateInterpolator
+import android.view.animation.DecelerateInterpolator
+import android.view.animation.LinearInterpolator
 import android.webkit.CookieManager
 import android.webkit.JsResult
 import android.webkit.SslErrorHandler
@@ -25,8 +31,8 @@ import com.base.browserwhite.bean.HistoryBean
 import com.base.browserwhite.databinding.FragmentWebViewBinding
 import com.base.browserwhite.ui.activity.download.DownloadAdapter
 import com.base.browserwhite.ui.activity.download.DownloadDialog.showDownloadFinishDialog
-import com.base.browserwhite.ui.fragment.BaseFragment
 import com.base.browserwhite.ui.activity.download.DownloadDialog.showDownloadVideoDialog
+import com.base.browserwhite.ui.fragment.BaseFragment
 import com.base.browserwhite.utils.ColorUtils
 import com.base.browserwhite.utils.DownloadUtils
 import com.base.browserwhite.utils.DownloadUtils.getDownloadJson
@@ -120,6 +126,107 @@ class WebViewFragment : BaseFragment<FragmentWebViewBinding>() {
 
     }
 
+    fun dropAndBounceButton(button: View) {
+        // 初始位置
+        val startTranslationY = button.translationY
+
+        // 掉落位置
+        val dropTranslationY = (-button.height * 3).toFloat()
+
+        // 回弹高度
+        val bounceHeight = -30f
+
+        // 创建掉落动画
+        val dropAnimator =
+            ObjectAnimator.ofFloat(button, "translationY", startTranslationY, dropTranslationY)
+        dropAnimator.setDuration(1000)
+        dropAnimator.interpolator = LinearInterpolator()
+
+        // 创建第一次回弹动画
+        val bounceUpAnimator = ObjectAnimator.ofFloat(
+            button,
+            "translationY",
+            dropTranslationY,
+            dropTranslationY + bounceHeight
+        )
+        bounceUpAnimator.setDuration(600)
+        bounceUpAnimator.interpolator = DecelerateInterpolator()
+
+        // 创建第一次回弹后下落动画
+        val bounceDownAnimator = ObjectAnimator.ofFloat(
+            button,
+            "translationY",
+            dropTranslationY + bounceHeight,
+            dropTranslationY
+        )
+        bounceDownAnimator.setDuration(600)
+        bounceDownAnimator.interpolator = AccelerateInterpolator()
+
+        // 创建第二次回弹动画
+        val secondBounceUpAnimator = ObjectAnimator.ofFloat(
+            button,
+            "translationY",
+            dropTranslationY,
+            startTranslationY + bounceHeight
+        )
+        secondBounceUpAnimator.setDuration(600)
+        secondBounceUpAnimator.interpolator = DecelerateInterpolator()
+
+        // 创建第二次回弹后下落动画
+        val secondBounceDownAnimator = ObjectAnimator.ofFloat(
+            button,
+            "translationY",
+            startTranslationY + bounceHeight,
+            startTranslationY
+        )
+        secondBounceDownAnimator.setDuration(600)
+        secondBounceDownAnimator.interpolator = LinearInterpolator()
+
+        // 创建动画集合
+        val bounceSet = AnimatorSet()
+        bounceSet.playSequentially(
+            bounceUpAnimator,
+            bounceDownAnimator,
+            secondBounceUpAnimator,
+            secondBounceDownAnimator
+        )
+
+        // 监听第一次回弹动画结束，开始第二次回弹动画
+        bounceUpAnimator.addListener(object : Animator.AnimatorListener {
+            override fun onAnimationStart(animation: Animator) {
+                binding.flDownload.isVisible = downloadList.isNotEmpty()
+            }
+
+            override fun onAnimationEnd(animation: Animator) {
+                secondBounceUpAnimator.start()
+            }
+
+            override fun onAnimationCancel(animation: Animator) {
+            }
+
+            override fun onAnimationRepeat(animation: Animator) {
+            }
+        })
+
+        // 启动掉落动画，然后开始回弹动画
+        dropAnimator.addListener(object : Animator.AnimatorListener {
+            override fun onAnimationStart(animation: Animator) {
+            }
+
+            override fun onAnimationEnd(animation: Animator) {
+                bounceUpAnimator.start()
+            }
+
+            override fun onAnimationCancel(animation: Animator) {
+            }
+
+            override fun onAnimationRepeat(animation: Animator) {
+            }
+        })
+
+        // 启动动画
+        dropAnimator.start()
+    }
 
     fun reloadWebView() {
         binding.llError.visibility = View.GONE
@@ -215,7 +322,10 @@ class WebViewFragment : BaseFragment<FragmentWebViewBinding>() {
                 }
             }
 
-            override fun shouldOverrideUrlLoading(view: WebView?, request: WebResourceRequest?): Boolean {
+            override fun shouldOverrideUrlLoading(
+                view: WebView?,
+                request: WebResourceRequest?
+            ): Boolean {
                 return super.shouldOverrideUrlLoading(view, request)
             }
 
@@ -239,7 +349,11 @@ class WebViewFragment : BaseFragment<FragmentWebViewBinding>() {
                 )
             }
 
-            override fun onReceivedSslError(view: WebView?, handler: SslErrorHandler?, error: SslError?) {
+            override fun onReceivedSslError(
+                view: WebView?,
+                handler: SslErrorHandler?,
+                error: SslError?
+            ) {
                 LogEx.logDebug(TAG, "onReceivedSslError")
                 super.onReceivedSslError(view, handler, error)
                 binding.webView.visibility = View.GONE
@@ -254,7 +368,11 @@ class WebViewFragment : BaseFragment<FragmentWebViewBinding>() {
                 }
             }
 
-            override fun onReceivedError(view: WebView?, request: WebResourceRequest?, error: WebResourceError?) {
+            override fun onReceivedError(
+                view: WebView?,
+                request: WebResourceRequest?,
+                error: WebResourceError?
+            ) {
                 LogEx.logDebug(TAG, "onReceivedError ${error?.errorCode} ${error?.description}")
                 super.onReceivedError(view, request, error)
                 return
@@ -296,8 +414,7 @@ class WebViewFragment : BaseFragment<FragmentWebViewBinding>() {
         }
 
         binding.tvDownloadNumber.text = downloadList.size.toString()
-        binding.flDownload.isVisible = downloadList.isNotEmpty()
-
+        dropAndBounceButton(binding.flDownload)
         downloadList.forEach {
             LogEx.logDebug(TAG, "${it.url} ${it.size} ${it.downloadId} ${it.path}")
         }