compat vivo detach

Author: xmuSistone

PersistentRecyclerView.apk

@@ -1,16 +1,16 @@
 package com.stone.persistent.recyclerview.extensions
 
+import android.app.Activity
 import android.graphics.Color
 import android.os.Build
 import android.util.DisplayMetrics
 import android.view.View
 import android.view.WindowManager
-import androidx.fragment.app.FragmentActivity
 
 /**
  * 沉浸式状态栏
  */
-fun FragmentActivity.immerseStatusBar() {
+fun Activity.immerseStatusBar() {
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
         window.statusBarColor = Color.TRANSPARENT
         window.decorView.systemUiVisibility =
@@ -26,25 +26,15 @@ fun FragmentActivity.immerseStatusBar() {
 /**
  * 获取状态栏高度
  */
-fun FragmentActivity.getStatusBarHeight(): Int {
-    var statusBarHeight = 0
-    try {
-        var clz = Class.forName("com.android.internal.R\$dimen")
-        var obj = clz!!.newInstance()
-        var field = clz.getField("status_bar_height")
-        var status_bar_height = Integer.parseInt(field!!.get(obj).toString())
-        statusBarHeight = resources.getDimensionPixelSize(status_bar_height)
-    } catch (e: Exception) {
-        e.printStackTrace()
-    }
-
-    return statusBarHeight
+fun Activity.getStatusBarHeight(): Int {
+    val statusBarHeightId = resources.getIdentifier("status_bar_height", "dimen", "android")
+    return resources.getDimensionPixelSize(statusBarHeightId)
 }
 
 /**
  * 获取屏幕宽度
  */
-fun FragmentActivity.getScreenWidth(): Int {
+fun Activity.getScreenWidth(): Int {
     val dm = DisplayMetrics()
     windowManager.defaultDisplay.getMetrics(dm)
     return dm.widthPixels

app/src/main/java/com/stone/persistent/recyclerview/extensions/ActivityExtensions.kt

@@ -21,8 +21,8 @@ class SyncScrollHelper(mainActivity: MainActivity) {
 
     private val statusBarHeight = mainActivity.getStatusBarHeight()
     private val toolbarHeight = mainActivity.dp2px(50f)
-    private var screenHeight = mainActivity.getScreenWidth()
-    private var searchBarHeight = mainActivity.dp2px(46f)
+    private val screenHeight = mainActivity.getScreenWidth()
+    private val searchBarHeight = mainActivity.dp2px(46f)
 
     private val activity = mainActivity
     private val toolBarLayout = mainActivity.main_toolbar

app/src/main/java/com/stone/persistent/recyclerview/helper/SyncScrollHelper.kt

@@ -43,7 +43,7 @@ open class BaseRecyclerView @JvmOverloads constructor(
     /**
      * 获取垂直方向的速率
      */
-    fun getVelocityY(): Int = (velocityYField.get(scrollerYObj) as Float).toInt()
+    fun getVelocityY(): Int = (overScroller.currVelocity).toInt()
 
     /**
      * 停止滑动fling

library/src/main/java/com/stone/persistent/recyclerview/library/BaseRecyclerView.kt

@@ -35,17 +35,14 @@ class ChildRecyclerView @JvmOverloads constructor(
         mTouchSlop = configuration.scaledTouchSlop
     }
 
-    override fun onScrollStateChanged(state: Int) {
-        super.onScrollStateChanged(state)
-
-        // 是否已经停止scrolling
-        if (state == SCROLL_STATE_IDLE) {
-            // 这里是考虑到当整个childRecyclerView被detach之后，及时上报parentRecyclerView
-            val velocityY = getVelocityY()
-            if (velocityY < 0 && computeVerticalScrollOffset() == 0) {
-                parentRecyclerView?.fling(0, velocityY)
-            }
-        }
+    /**
+     * 当整个childRecyclerView被detach之后，及时上报parentRecyclerView
+     */
+    override fun onDetachedFromWindow() {
+        super.onDetachedFromWindow()
+
+        val velocityY = getVelocityY()
+        parentRecyclerView?.fling(0, -velocityY)
     }
 
     override fun onInterceptTouchEvent(ev: MotionEvent): Boolean {