I have a Recyclerview in a NestedScrollview.. everything is working fine except one thig. I have total three view in NestedScrollview First two are LinearLayout then Recyclerview. when i run my app the Activity don't show top two layout it starts from top of the Recyclerview.
我在NestedScrollview中有一个Recyclerview ..一切正常，除了一个thig。我在NestedScrollview中有三个视图，前两个是LinearLayout然后是Recyclerview。当我运行我的应用程序时，活动不会显示从Recyclerview顶部开始的前两个布局。
How its show my layout:
它如何显示我的布局：
How its suppose to show:
它的假设如何显示：
And i am loading this enite layout under a viewpager and my viewpager is a child of Coordinator Layout.
我在viewpager下加载这个enite布局，我的viewpager是Coordinator Layout的子代。
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView
android:id="@+id/scrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/home_layout_background">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<com.daimajia.slider.library.SliderLayout
android:id="@+id/image_slider"
android:layout_width="match_parent"
android:layout_height="@dimen/image_slider_height"
android:layout_marginTop="@dimen/image_slider_top_margin" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/popular_fragment_side_padding"
android:layout_marginRight="@dimen/popular_fragment_side_padding"
android:layout_marginTop="@dimen/popular_fragment_side_padding"
android:orientation="horizontal"
android:weightSum="4">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:id="@+id/free_delivery"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_centerInParent="true"
android:background="@color/white">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/btnImageViewFreeDelivery"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="@drawable/icon_free_delivery" />
<TextView
android:id="@+id/btnTextFreeDelivery"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnImageViewFreeDelivery"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:text="@string/free_delivery_txt"
android:textColor="@color/popular_fragment_four_btn_txt"
android:textSize="@dimen/popular_fragment_four_btn_txt_size" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:id="@+id/flash_deals"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_centerInParent="true"
android:background="@color/white">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/btnImageViewFlashDeals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="@drawable/icon_flash_deals" />
<TextView
android:id="@+id/btnTextFlashDeals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnImageViewFlashDeals"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:text="@string/flash_deals_txt"
android:textColor="@color/popular_fragment_four_btn_txt"
android:textSize="@dimen/popular_fragment_four_btn_txt_size" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:id="@+id/for_you"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_centerInParent="true"
android:background="@color/white">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/btnImageViewForYou"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="@drawable/icon_for_you" />
<TextView
android:id="@+id/btnTextForYou"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnImageViewForYou"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:text="@string/for_you_txt"
android:textColor="@color/popular_fragment_four_btn_txt"
android:textSize="@dimen/popular_fragment_four_btn_txt_size" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:id="@+id/shake_deals"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_centerInParent="true"
android:background="@color/white">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/btnImageViewShakeDeals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="@drawable/icon_shake_deals" />
<TextView
android:id="@+id/btnTextShakeDeals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnImageViewShakeDeals"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:text="@string/shake_deals"
android:textColor="@color/popular_fragment_four_btn_txt"
android:textSize="@dimen/popular_fragment_four_btn_txt_size" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="@dimen/popular_fragment_side_padding"
android:layout_marginRight="@dimen/popular_fragment_side_padding"
android:layout_marginTop="18dp"
android:scrollbars="none" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
My ViewPager Layout
我的ViewPager布局
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.view.ViewPager
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/home_layout_background"
app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="center"
android:background="@drawable/toolbar_background"
app:layout_scrollFlags="scroll|enterAlways">
<TextView
android:id="@+id/toolbar_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="@string/title_home"
android:textColor="@color/toolbar_title_txt_color"
android:textSize="@dimen/toolbar_txt_size"
android:textStyle="bold" />
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/white"
app:tabMode="scrollable"
app:tabTextColor="@color/tab_bar_txt"
app:tabIndicatorColor="@color/tab_bar_txt_selected"
app:tabSelectedTextColor="@color/tab_bar_txt_selected"
app:tabTextAppearance="@style/TabTextAppeareance"/>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
4 个解决方案
#1
39
It is a problem about focus. Try :
关注焦点是一个问题。试试：
findViewById(R.id.recycler_view).setFocusable(false);
findViewById(R.id.temp).requestFocus();
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView
android:id="@+id/scrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/home_layout_background">
<LinearLayout
android:id="@+id/temp"
android:focusable="true"
android:focusableInTouchMode="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<com.daimajia.slider.library.SliderLayout
android:id="@+id/image_slider"
android:layout_width="match_parent"
android:layout_height="@dimen/image_slider_height"
android:layout_marginTop="@dimen/image_slider_top_margin" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/popular_fragment_side_padding"
android:layout_marginRight="@dimen/popular_fragment_side_padding"
android:layout_marginTop="@dimen/popular_fragment_side_padding"
android:orientation="horizontal"
android:weightSum="4">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:id="@+id/free_delivery"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_centerInParent="true"
android:background="@color/white">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/btnImageViewFreeDelivery"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="@drawable/icon_free_delivery" />
<TextView
android:id="@+id/btnTextFreeDelivery"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnImageViewFreeDelivery"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:text="@string/free_delivery_txt"
android:textColor="@color/popular_fragment_four_btn_txt"
android:textSize="@dimen/popular_fragment_four_btn_txt_size" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:id="@+id/flash_deals"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_centerInParent="true"
android:background="@color/white">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/btnImageViewFlashDeals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="@drawable/icon_flash_deals" />
<TextView
android:id="@+id/btnTextFlashDeals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnImageViewFlashDeals"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:text="@string/flash_deals_txt"
android:textColor="@color/popular_fragment_four_btn_txt"
android:textSize="@dimen/popular_fragment_four_btn_txt_size" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:id="@+id/for_you"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_centerInParent="true"
android:background="@color/white">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/btnImageViewForYou"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="@drawable/icon_for_you" />
<TextView
android:id="@+id/btnTextForYou"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnImageViewForYou"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:text="@string/for_you_txt"
android:textColor="@color/popular_fragment_four_btn_txt"
android:textSize="@dimen/popular_fragment_four_btn_txt_size" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:id="@+id/shake_deals"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_centerInParent="true"
android:background="@color/white">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/btnImageViewShakeDeals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="@drawable/icon_shake_deals" />
<TextView
android:id="@+id/btnTextShakeDeals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnImageViewShakeDeals"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:text="@string/shake_deals"
android:textColor="@color/popular_fragment_four_btn_txt"
android:textSize="@dimen/popular_fragment_four_btn_txt_size" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:focusable="false"
android:focusableInTouchMode="false"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="@dimen/popular_fragment_side_padding"
android:layout_marginRight="@dimen/popular_fragment_side_padding"
android:layout_marginTop="18dp"
android:scrollbars="none" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
#2
43
I had the same problem, and I fixed it the following way.
我有同样的问题，我按照以下方式修复它。
Add android:descendantFocusability="blocksDescendants" to the Linear Layout which is the only child of the Nested Scroll View.
将android：descendantFocusability =“blocksDescendants”添加到Linear Layout，它是嵌套滚动视图的唯一子项。
This allows the Nested Scroll View to start from the top with minimal change to code.
这允许嵌套滚动视图从顶部开始，只需对代码进行最少的更改。
#3
5
Just add this line to child of NestedScrollView in xml:
只需将此行添加到xml中NestedScrollView的子级：
android:focusableInTouchMode="true"
The problem goes away!
问题消失了！
#4
0
Add this line in NestedScrollView 's child Layout
在NestedScrollView的子布局中添加此行
android:descendantFocusability="afterDescendants"
机器人：descendantFocusability = “afterDescendants”
#1
39
It is a problem about focus. Try :
关注焦点是一个问题。试试：
findViewById(R.id.recycler_view).setFocusable(false);
findViewById(R.id.temp).requestFocus();
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView
android:id="@+id/scrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/home_layout_background">
<LinearLayout
android:id="@+id/temp"
android:focusable="true"
android:focusableInTouchMode="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<com.daimajia.slider.library.SliderLayout
android:id="@+id/image_slider"
android:layout_width="match_parent"
android:layout_height="@dimen/image_slider_height"
android:layout_marginTop="@dimen/image_slider_top_margin" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/popular_fragment_side_padding"
android:layout_marginRight="@dimen/popular_fragment_side_padding"
android:layout_marginTop="@dimen/popular_fragment_side_padding"
android:orientation="horizontal"
android:weightSum="4">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:id="@+id/free_delivery"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_centerInParent="true"
android:background="@color/white">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/btnImageViewFreeDelivery"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="@drawable/icon_free_delivery" />
<TextView
android:id="@+id/btnTextFreeDelivery"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnImageViewFreeDelivery"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:text="@string/free_delivery_txt"
android:textColor="@color/popular_fragment_four_btn_txt"
android:textSize="@dimen/popular_fragment_four_btn_txt_size" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:id="@+id/flash_deals"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_centerInParent="true"
android:background="@color/white">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/btnImageViewFlashDeals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="@drawable/icon_flash_deals" />
<TextView
android:id="@+id/btnTextFlashDeals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnImageViewFlashDeals"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:text="@string/flash_deals_txt"
android:textColor="@color/popular_fragment_four_btn_txt"
android:textSize="@dimen/popular_fragment_four_btn_txt_size" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:id="@+id/for_you"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_centerInParent="true"
android:background="@color/white">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/btnImageViewForYou"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="@drawable/icon_for_you" />
<TextView
android:id="@+id/btnTextForYou"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnImageViewForYou"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:text="@string/for_you_txt"
android:textColor="@color/popular_fragment_four_btn_txt"
android:textSize="@dimen/popular_fragment_four_btn_txt_size" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<RelativeLayout
android:id="@+id/shake_deals"
android:layout_width="76dp"
android:layout_height="76dp"
android:layout_centerInParent="true"
android:background="@color/white">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true">
<ImageView
android:id="@+id/btnImageViewShakeDeals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="@drawable/icon_shake_deals" />
<TextView
android:id="@+id/btnTextShakeDeals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnImageViewShakeDeals"
android:layout_centerHorizontal="true"
android:layout_marginTop="2dp"
android:text="@string/shake_deals"
android:textColor="@color/popular_fragment_four_btn_txt"
android:textSize="@dimen/popular_fragment_four_btn_txt_size" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:focusable="false"
android:focusableInTouchMode="false"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="@dimen/popular_fragment_side_padding"
android:layout_marginRight="@dimen/popular_fragment_side_padding"
android:layout_marginTop="18dp"
android:scrollbars="none" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
#2
43
I had the same problem, and I fixed it the following way.
我有同样的问题，我按照以下方式修复它。
Add android:descendantFocusability="blocksDescendants" to the Linear Layout which is the only child of the Nested Scroll View.
将android：descendantFocusability =“blocksDescendants”添加到Linear Layout，它是嵌套滚动视图的唯一子项。
This allows the Nested Scroll View to start from the top with minimal change to code.
这允许嵌套滚动视图从顶部开始，只需对代码进行最少的更改。
#3
5
Just add this line to child of NestedScrollView in xml:
只需将此行添加到xml中NestedScrollView的子级：
android:focusableInTouchMode="true"
The problem goes away!
问题消失了！
#4
0
Add this line in NestedScrollView 's child Layout
在NestedScrollView的子布局中添加此行
android:descendantFocusability="afterDescendants"
机器人：descendantFocusability = “afterDescendants”