在CoordinatorLayout中使用时，页脚在屏幕上滚动

问题描述

限时删除！！

我有HomeActivity，其中包含片段，并且在底部具有自定义导航视图，如下所示.

I have HomeActivity which contains fragment and at the bottom it has custom navigation view as shown below.

通过单击配置文件图片，它将用UserProfileView片段替换该片段. userProfileView片段在coordinatorLayout内部具有Collapsing工具栏.

By clicking on profile pic, it replaces the fragment with UserProfileView fragment. userProfileView fragment has Collapsing toolbar inside coordinatorLayout.

userprofileview.xml

userprofileview.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:bind="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">

    <data>

        <variable
            name="resource"
            type="com.example.app.model.ResourceData" />


        <import type="android.view.View" />

    </data>

    <android.support.design.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/bg_home"
        android:fitsSystemWindows="true">

        <android.support.design.widget.AppBarLayout
            android:id="@+id/app_bar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/bg_home">

            <android.support.design.widget.CollapsingToolbarLayout
                android:id="@+id/toolbar_layout"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                app:layout_scrollFlags="scroll|exitUntilCollapsed">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical">


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

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical"
            app:layout_behavior="@string/appbar_scrolling_view_behavior">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="@dimen/_10sdp"
                android:orientation="horizontal">

                <ImageView
                    android:id="@+id/ic_list"
                    android:layout_width="@dimen/_17sdp"
                    android:layout_height="@dimen/_17sdp"
                    android:layout_gravity="center"
                    android:layout_marginLeft="@dimen/_10sdp"
                    android:background="@drawable/ic_list_selected" />

                <ImageView
                    android:id="@+id/ic_grid_view"
                    android:layout_width="@dimen/_15sdp"
                    android:layout_height="@dimen/_15sdp"
                    android:layout_gravity="center"
                    android:layout_marginLeft="@dimen/_10sdp"
                    android:background="@drawable/ic_grid_unselected" />
            </LinearLayout>

            <android.support.v7.widget.RecyclerView
                android:visibility="gone"
                android:id="@+id/rv_post"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                app:resource="@{resource}" />

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

问题是，当我从底部导航菜单中单击任何其他菜单时，它将滚动到屏幕，如下所示.

The problem is when i click to any other menu from bottom navigation menu, it scrolls off the screen as shown below.

在UserProfileView片段中添加CoordinatorLayout之后，就会发生此问题.

This issue is occurring after adding CoordinatorLayout in UserProfileView framgment.

如果我将Linear布局替换为CoordinatorLayout，则可以正常工作，但无法获得折叠工具栏的功能.

If i replace CoordinatorLayout with LinearLayout then it works fine but doesn't get the functionality of collapsing toolbar.

谢谢！

推荐答案

android:fitsSystemWindows="true"会导致问题.简而言之...它可使您的抽屉布局全屏显示.

android:fitsSystemWindows="true" in your fragment_user_profile.xml causes problem. Simply... it makes your drawer layout looks fullscreen.

大致上，user屏幕保持顶部指示器边距，而home屏幕则没有.因此，主屏幕随指标大小而上升. (实际上不是，关于fitsSystemWindows的详细信息:我为什么要fitsSystemWindows )

Roughly, user screen maintains top indicator margin and home screen doesn't. So home screen moved up as indicator size. (Actually it isn't, Details about fitsSystemWindows:Why would I want to fitsSystemWindows)

因此，从fragment_user_profile.xml删除fitsSystemWindows将解决您的问题.

So, remove fitsSystemWindows from fragment_user_profile.xml will fix your problem.

我建议您将fitsSystemWindows添加到activity_main.xml中的container_body中，但是我不确定实际的代码是什么，所以这就是您的要求.

And I suggest you add fitsSystemWindows to your container_body in activity_main.xml, but I'm not sure that what is the actual code, so it is your call.

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