问题
I am using FAB button for profile picture but it is already having some padding. I am using following code for creating FAB button.
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_margin="@dimen/fab_margin"
android:src="@drawable/student"
app:layout_anchor="@id/app_bar"
app:layout_anchorGravity="bottom|end"/>
How can i remove the padding which is automatically providing by library. I have also attached an screenshot of output. I want to remove this sky blue color and increase the size of src image.
回答1:
just add this in your dimens.xml file
<dimen name="design_fab_image_size" tools:override="true">36dp</dimen>
This might not work for 3rd party libraries.
回答2:
You can changethe attribute app:maxImageSize to match the size of your image.
app:maxImageSize="the wanted size"
I find the solution safer the the overriding of the design_fab_image_size because if your app have several floating action buttons, you will only alter one.
回答3:
add this in your fab xml layout
android:elevation="0dp"
app:elevation="10dp"
app:useCompatPadding="true"
This will do the job. Worked perfectly for me.
来源：https://stackoverflow.com/questions/38567663/how-to-remove-auto-padding-of-fab-button-in-android