CoordinatorLayout，FAB和容器布局冲突 [英] CoordinatorLayout, FAB and container layout conflict

问题描述

我有一个带有container layout的抽屉的主要活动，在其中用FragmentManager替换每个片段.

I have a main activity with a drawer that have a container layout where I replace each fragment with FragmentManager.

我想将FAB添加到我的一个子片段中，该子片段可以滚动显示隐藏/显示，但是我不确定自己在做什么错并得到:

I want to add a FAB to one of my child fragments that hide/show on scroll but Im not sure what Im doing wrong and get:

布局:

<?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_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:fitsSystemWindows="true"
    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"
      android:minHeight="?actionBarSize"
      android:theme="@style/Toolbar"
      app:layout_scrollFlags="scroll|enterAlways" />

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

  <FrameLayout
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior" />

  <android.support.design.widget.FloatingActionButton
    style="@style/Widget.Design.FloatingActionButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|right|end"
    android:layout_marginBottom="@dimen/spacing_medium"
    android:layout_marginRight="@dimen/spacing_medium"
    android:elevation="@dimen/elevation_little"
    app:fabSize="normal"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    app:srcCompat="@drawable/ic_add_white_18dp" />

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

推荐答案

1. 看起来像CoordinatorLayout不能处理不是直接子级" 的子级视图的行为.

1. Looks like CoordinatorLayout cant handle behaviour of children views that are not "direct children".

您需要在fab视图中添加app:layout_anchorGravity="bottom|right|end"和android:layout_gravity="end|bottom".

You need to add a app:layout_anchorGravity="bottom|right|end" and android:layout_gravity="end|bottom" in your fab view.

例如:

<android.support.design.widget.FloatingActionButton
        android:id="@+id/fab_feeds"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="16dp"
        android:clickable="true"
        android:layout_gravity="end|bottom"
        android:src="@drawable/ic_plus_white"
        app:layout_anchorGravity="bottom|right|end"/>

这篇关于CoordinatorLayout，FAB和容器布局冲突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！