我想使用支持库中的Bottom-sheet和两个浮动操作按钮(FABS)来显示图片。关键是我还希望FABS与底页一起移动,如图1和图2所示。 我必须使用的基本布局是什么以及如何使FABS在底页上粘贴?
更新
<LinearLayout
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"
android:orientation="vertical"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
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>
<android.support.design.widget.CoordinatorLayout
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- my context here -->
</LinearLayout>
<!-- bottomsheet -->
<FrameLayout
android:id="@+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff0000"
app:behavior_hideable="true"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior">
<include layout="@layout/navigation_info" />
</FrameLayout>
<!-- FABS -->
<!-- wrap to primary fab to extend the height -->
<LinearLayout
android:id="@+id/primary_wrap"
android:layout_width="wrap_content"
android:layout_height="88dp"
app:layout_anchor="@id/bottom_sheet"
app:layout_anchorGravity="top|end">
<android.support.design.widget.FloatingActionButton
android:id="@+id/primary"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/fab_margin"
android:src="@android:drawable/ic_delete"/>
</LinearLayout>
<!-- Pin secondary fab in the top of the extended primary -->
<android.support.design.widget.FloatingActionButton
android:id="@+id/secondary"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top|end"
android:layout_margin="16dp"
android:src="@android:drawable/ic_dialog_email"
app:layout_anchor="@+id/primary_wrap"
app:layout_anchorGravity="top|end"/>
</android.support.design.widget.CoordinatorLayout>
基于Ruan_Lopes回答。
通过这种布局,我的FABS可以按照我的要求工作,但我仍然认为我没有这么做。
我想知道是否有可能以更正式的方式做到这一点。
答案 0 :(得分:7)
您可以使用与此类似的布局:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.AppBarLayout>
<!-- Your code -->
</android.support.design.widget.AppBarLayout>
<!-- Your content -->
<include layout="@layout/content_main" />
<!-- Bottom Sheet -->
<include layout="@layout/bottom_sheets_main"/>
<!-- First FAB -->
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_anchor="@id/bottomSheet"
app:layout_anchorGravity="bottom|end"/>
<!-- Second FAB -->
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top|end"
app:layout_anchor="@id/fab"
app:layout_anchorGravity="top" />
</android.support.design.widget.CoordinatorLayout>
我用过&#34; include&#34;在示例中为了清晰起见但app:layout_anchor将使你的FAB&#34;坚持&#34;在底页上,所以你应该将底部Sheet的id作为参数放在那里,你可以按照相同的原则为你的第二个FAB使用layout_anchor将它粘贴在第一个FAB上。
答案 1 :(得分:7)
您是否尝试过使用BottomSheetBehaviour将app:layout_insetEdge =“ bottom”添加到视图中?像这样的东西,在ConstraintLayout中的FAB和BottomSheetBehaviour View兄弟对我有用:
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:layout_margin="16dp"
app:backgroundTint="@color/white"
app:fabSize="normal"
app:layout_dodgeInsetEdges="bottom"
app:srcCompat="@drawable/icon"
/>
<View
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_insetEdge="bottom"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior"
/>
答案 2 :(得分:1)
此代码对我有用
<?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"
tools:context="com.androidsample.BottomSheetActivity">
<!-- include app bar -->
<include layout="@layout/app_bar" />
<!-- include main content -->
<include layout="@layout/activity_bottom_sheet_content" />
<!-- include bottom sheet -->
<include layout="@layout/bottom_sheet" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/b2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/activity_vertical_margin"
android:src="@drawable/ic_share_black_24dp"
app:backgroundTint="#3F51B5"
app:layout_anchor="@+id/text"
app:layout_anchorGravity="top|end" />
<TextView
android:id="@+id/text"
android:layout_width="50dp"
android:layout_height="70dp"
app:layout_anchor="@+id/b1"
app:layout_anchorGravity="top|end"
/>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/b1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/activity_vertical_margin"
android:src="@drawable/ic_share_black_24dp"
app:backgroundTint="#3F51B5"
app:layout_anchor="@+id/bottom_sheet_mapviewfinal"
app:layout_anchorGravity="top|end" /></android.support.design.widget.CoordinatorLayout>
使用layout_anchor ID时,您指的是bottom_sheet的ID。
参考: Medium Reference
希望有帮助。