支持库24.2.1中锚定的FloatingActionButton的错误 [英] Bug with anchored FloatingActionButton in support library 24.2.1

问题描述

自24.2.0起，我一直遇到这个问题，但是现在我使用的是24.2.1，该错误仍然存​​在，它只能正常工作< = 24.1.1.

I have been having this issue since 24.2.0, but now I'm using 24.2.1 and the bug is still here, it only works well <= 24.1.1.

我有一个这样的锚定FloatingActionButton:

I have an anchored FloatingActionButton done like this:

<ScrollView
    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.support.design.widget.CoordinatorLayout
        android:id="@+id/contact_coordinator_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        tools:context="es.cocode.baseapp.contact.ContactFragment">

        <FrameLayout
            android:id="@+id/map_fragment_container"
            android:layout_width="match_parent"
            android:layout_height="198dp"
            android:layout_marginBottom="210dp">

            <fragment
                android:id="@+id/map_fragment"
                android:name="com.google.android.gms.maps.SupportMapFragment"
                android:layout_width="match_parent"
                android:layout_height="match_parent" />

        </FrameLayout>

        <android.support.design.widget.FloatingActionButton
            android:id="@+id/fab_fullscreen_map"
            android:src="@drawable/ic_fullscreen_white_48dp"
            android:layout_width="56dp"
            android:layout_height="56dp"
            android:layout_margin="@dimen/fab_margin"
            app:layout_anchor="@id/map_fragment_container"
            app:layout_anchorGravity="bottom|end" />

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

</ScrollView>

它通常是这样的:

但是有时会出现错误，并且锚点不起作用:

But sometimes the bug appears and the anchor doesn't work:

是否有解决此问题的方法，还是应该等到此错误得到修复并改用24.1.1为止?

Is there a way to solve this, or should I wait until this bug gets fixed and use 24.1.1 instead?

推荐答案

解决方案是在XML中将FloatingActionButton可见性设置为GONE，并在准备好映射后将其重新设置为VISIBLE.

The solution was to set the FloatingActionButton visibility to GONE in the XML and when the map is ready set it back to VISIBLE.

@Override
public void onMapReady(GoogleMap googleMap) {
    . . .
    yourFAB.setVisibility(View.VISIBLE);
}

编辑:这是此 查看全文