Android FloatingActionButton suddenly is transparent only on ProGuard build

Question

After updating my AppCompat library to 25 when I build release with proguard all of my FloatingActionButton backgrounds are transparent. When i build a debug build without proguard it is colored like it should be.

Layout

 <android.support.design.widget.FloatingActionButton
    android:id="@+id/fab_upload"
    android:visibility="gone"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    app:layout_anchor="@id/content_frame"
    app:layout_anchorGravity="bottom|right|end"
    app:borderWidth="0dp"
    android:src="@drawable/app_fab_upload"
    android:layout_margin="@dimen/big_padding"
    android:clickable="true"
    app:backgroundTint="@color/fab_social"/>

Gradle

compileSdkVersion = 25
buildToolsVersion = '25.0.0'
supportLibVersion = '25.0.0'

supportLibAppCompat = "com.android.support:appcompat-v7:$supportLibVersion"
supportLibCardView = "com.android.support:cardview-v7:$supportLibVersion"
supportLibRecyclerView = "com.android.support:recyclerview-v7:$supportLibVersion"
supportLibDesign = "com.android.support:design:$supportLibVersion"
supportLibPalette = "com.android.support:palette-v7:$supportLibVersion"
supportLibPercent = "com.android.support:percent:$supportLibVersion"

I don't have any references to AppCompat in my proguard config.

UPDATE

I just tried another one of my projects and it has the same issue. The issue seems to stem from updating Android Studio to 2.3 Canary build.

check your color file and set the color accent if it is transparent — SAVVY, Nov 14 '16 at 18:03

score 4 · Answer 1 · answered Nov 15 '16 at 16:14

I have found and fixed the issue.

As stated in my update above the issue started when I updated to Android Studio 2.3 Canary. When doing that is updated my android build tools to 2.3 alhpa. I changed it back to

classpath 'com.android.tools.build:gradle:2.2.2'

and now the fab is as it should be.

To clarify I am still on Android Studio 2.3 Canary, I just did not update the android build tools.

score 0 · Answer 2 · edited May 23 '17 at 12:24

Try to replace backgroundTint to backgroundhere is an example which show the difference between background tint and background example.

So your code will be

<android.support.design.widget.FloatingActionButton
android:id="@+id/fab_upload"
android:visibility="gone"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
app:layout_anchor="@id/content_frame"
app:layout_anchorGravity="bottom|right|end"
app:borderWidth="0dp"
android:src="@drawable/app_fab_upload"
android:layout_margin="@dimen/big_padding"
android:clickable="true"
android:background="@color/fab_social"/>

Android FloatingActionButton suddenly is transparent only on ProGuard build

2 Answers2