Question

如何将FloatingActionButton仅移动到我想要的特定片段布局？例如，只显示片段B，而片段A消除。

我的代码

activity_main

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
    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:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

    <include
        layout="@layout/app_bar_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer" />

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

app_bar_main

<?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"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.bertho.tdashboard.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:theme="@style/AppTheme.AppBarOverlay">

        <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/AppTheme.PopupOverlay" />

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

    <include layout="@layout/content_main"/>

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        android:src="@android:drawable/ic_dialog_email" />

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

content_main

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    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:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:showIn="@layout/app_bar_main"
    tools:context="com.bertho.tdashboard.MainActivity">

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

</RelativeLayout>

和我的 fragment_channel

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/swipe_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.v7.widget.RecyclerView
            android:id="@+id/movies_recycler_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

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

</LinearLayout>

在此，我想将FloatingActionButton从 app_bar_main 移至 fragment_channel 布局。

当我尝试时，在{strong> fragment_channel 中移动android.support.design.widget.CoordinatorLayout和FloatingActionButton时，我看起来很乱。

如何将浮动操作按钮仅放在特定片段的布局上（在这种情况下为fragment_channel）？

Answer 1

以下是我在案件中所做的事情。希望它可以帮到你。

- app_bar_main.xml

  <android.support.design.widget.CoordinatorLayout
  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:fitsSystemWindows="true"
  tools:context="com.bertho.tdashboard.MainActivity"
  >

     <android.support.design.widget.AppBarLayout
     android:layout_height="wrap_content"
     android:layout_width="match_parent"
     android:theme="@style/AppTheme.AppBarOverlay">

        <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/AppTheme.PopupOverlay" />

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

       <include layout="@layout/content_main"/>

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

- content_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
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:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:showIn="@layout/app_bar_main"
tools:context="com.bertho.tdashboard.MainActivity">

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

</RelativeLayout>

现在你在 fragment_channel.xml 中将 FrameLayout 作为父级，在关闭它之前，请放入你的FAB。

        <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        xmlns:android="http://schemas.android.com/apk/res/android">

             <android.support.v4.widget.SwipeRefreshLayout
             android:id="@+id/swipe_layout"
             android:layout_width="match_parent"
             android:layout_height="match_parent">

               <android.support.v7.widget.RecyclerView
               android:id="@+id/movies_recycler_view"
               android:layout_width="match_parent"
               android:layout_height="match_parent" />

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

             <android.support.design.widget.FloatingActionButton
             android:id="@+id/fab"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_gravity="end|bottom"
             android:layout_margin="@dimen/fab_margin"
             android:src="@drawable/ic_new_user" />
    </FrameLayout>

要完成，请移除 MainActivity 中的 FAB 代码，并在 ChannelFragment.java 中实施。

希望有用

如何将FloatingActionButton移动到特定的片段布局

1 个答案: