首先:我以前使用回收器视图和滚动侦听器,一切都很好,但这是第一次使用协调器布局并在嵌套滚动视图中使用片段,所以我认为与设计有关的问题
这是我的滚动代码摘要
categoryRecyclerView?.addOnScrollListener(object : RecyclerView.OnScrollListener() {
override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
super.onScrolled(recyclerView, dx, dy)
Log.e("scrolling","scroll")
if (dy > 0) {
Log.e("scrolling","vertical")
因此,当我滚动时,无论我是否滚动,我都不会在logcat中看到(“ scrolling”,“ vertical”),但我只会看到(“ scrolling”,“ scroll”)一次)
这是我的活动xml
<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_height="match_parent" android:layout_width="match_parent" android:background="@color/layoutBackground"> <android.support.design.widget.AppBarLayout android:id="@+id/app_bar_layout" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"> <android.support.v7.widget.Toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?actionBarSize" app:layout_scrollFlags="scroll|enterAlways" app:popupTheme="@style/ThemeOverlay.AppCompat.Light" /> </android.support.design.widget.AppBarLayout> <android.support.v4.widget.NestedScrollView android:id="@+id/nestedScroll" android:layout_width="match_parent" android:layout_height="match_parent" android:clipToPadding="false" app:layout_behavior="@string/appbar_scrolling_view_behavior"> <FrameLayout android:padding="8dp" android:id="@+id/fragmentContainer" android:layout_width="match_parent" android:layout_height="match_parent" /> </android.support.v4.widget.NestedScrollView> <android.support.design.widget.BottomNavigationView android:id="@+id/bottomNavigationView" android:layout_width="match_parent" android:layout_height="56dp" android:layout_gravity="bottom" android:background="@color/colorPrimary" android:padding="8dp" app:layout_behavior="@string/hide_bottom_view_on_scroll_behavior" app:itemIconTint="@drawable/navigation_item_selector" app:itemTextColor="@android:color/white" app:menu="@menu/navigation_menu" /> </android.support.design.widget.CoordinatorLayout>
这是我的片段xml
<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/layoutBackground" tools:context=".fragments.AllItemsFragment"> <android.support.v7.widget.RecyclerView android:id="@+id/categoryRecyclerView" android:layout_width="match_parent" android:layout_height="wrap_content" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" tools:listitem="@layout/entertainment_recycler_view_item" /> <ProgressBar android:id="@+id/loadingCategoryList" style="?android:attr/progressBarStyle" android:layout_width="wrap_content" android:layout_height="wrap_content" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" /> </android.support.constraint.ConstraintLayout>
在我设置的片段中的onActivtyCreated中
scrollView.isNestedScrollingEnabled = false
并且在init recyclerview代码中,我将recyclerview设置为
categoryRecyclerView?.isNestedScrollingEnabled = false
categoryRecyclerView?.setHasFixedSize(false);
首先,我以前在回收器视图和滚动侦听器上工作,一切都很棒,但这是第一次使用协调器布局并在嵌套滚动视图中使用片段,所以我认为...
设置