NestedScrollView 和 CoordinatorLayout.滚动问题 [英] NestedScrollView and CoordinatorLayout. Issue on Scrolling

问题描述

CoordinatorLayout 和 NestedScrollView(使用设计支持库 22.2.0)有一个奇怪的问题

I have a strange issue with the CoordinatorLayout and the NestedScrollView (with the design support library 22.2.0)

使用小于 NestedScrollView 的内容我应该有一个固定的内容.但是，尝试上下滚动内容时，我发现内容已被替换，并且再也不会出现在自己的位置.

Using a content smaller than NestedScrollView I should have a fixed content. However trying to scroll up and down the content I can obtain that the content is displaced and never again in their own place.

这里有一个小例子:

代码如下:

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    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.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="?attr/colorPrimary"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
                app:layout_scrollFlags="scroll|enterAlways" />

    </android.support.design.widget.AppBarLayout>

    <android.support.v4.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <FrameLayout
            android:paddingTop="24dp"
            android:id="@+id/fragment_container"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:padding="@dimen/padding">

        </FrameLayout>

    </android.support.v4.widget.NestedScrollView>

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab_action"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="end|bottom"
        android:layout_margin="16dp"
        android:visibility="gone"
        android:src="@drawable/ic_done" />

</android.support.design.widget.CoordinatorLayout>

推荐答案

这也可以在 cheesesquare 演示中删除时观察到详细信息片段中只有一张卡片.

This can also be observed in the cheesesquare demo when removing all but one card in the details fragment.

我能够使用这个类(目前)解决这个问题:https://gist.github.com/EmmanuelVinas/c598292f43713c75d18e

I was able to solve this (for now) using this class: https://gist.github.com/EmmanuelVinas/c598292f43713c75d18e

<android.support.v4.widget.NestedScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="com.evs.demo.layout.FixedScrollingViewBehavior">
    .....   
</android.support.v4.widget.NestedScrollView>

这篇关于NestedScrollView 和 CoordinatorLayout.滚动问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！