Fix ripple in Fab Minis

PiperOrigin-RevId: 246370664

Author: ymarian

lib/java/com/google/android/material/floatingactionbutton/FloatingActionButton.java

@@ -249,7 +249,8 @@ public FloatingActionButton(Context context, @Nullable AttributeSet attrs, int d
     expandableWidgetHelper = new ExpandableWidgetHelper(this);
 
     getImpl().setShapeAppearance(shapeAppearance, usingDefaultCorner);
-    getImpl().setBackgroundDrawable(backgroundTint, backgroundTintMode, rippleColor, borderWidth);
+    getImpl()
+        .initializeBackgroundDrawable(backgroundTint, backgroundTintMode, rippleColor, borderWidth);
     getImpl().setMinTouchTargetSize(minTouchTargetSize);
     getImpl().setElevation(elevation);
     getImpl().setHoveredFocusedTranslationZ(hoveredFocusedTranslationZ);

lib/java/com/google/android/material/floatingactionbutton/FloatingActionButtonImpl.java

@@ -51,6 +51,7 @@
 import com.google.android.material.shape.MaterialShapeDrawable;
 import com.google.android.material.shape.ShapeAppearanceModel;
 import androidx.core.graphics.drawable.DrawableCompat;
+import androidx.core.util.Preconditions;
 import androidx.core.view.ViewCompat;
 import android.view.View;
 import android.view.ViewTreeObserver;
@@ -175,7 +176,7 @@ interface InternalVisibilityChangedListener {
     rotation = this.view.getRotation();
   }
 
-  void setBackgroundDrawable(
+  void initializeBackgroundDrawable(
       ColorStateList backgroundTint,
       PorterDuff.Mode backgroundTintMode,
       ColorStateList rippleColor,
@@ -200,7 +201,6 @@ void setBackgroundDrawable(
         checkNotNull(shapeDrawable),
         touchFeedbackShape};
     contentBackground = new LayerDrawable(layers);
-    shadowViewDelegate.setBackgroundDrawable(contentBackground);
   }
 
   void setBackgroundTintList(@Nullable ColorStateList tint) {
@@ -662,6 +662,7 @@ void getPadding(Rect rect) {
   }
 
   void onPaddingUpdated(Rect padding) {
+    Preconditions.checkNotNull(contentBackground, "Didn't initialize content background");
     if (shouldAddPadding()) {
       InsetDrawable insetDrawable = new InsetDrawable(
           contentBackground, padding.left, padding.top, padding.right, padding.bottom);

lib/java/com/google/android/material/floatingactionbutton/FloatingActionButtonImplLollipop.java

@@ -54,7 +54,7 @@ class FloatingActionButtonImplLollipop extends FloatingActionButtonImpl {
   }
 
   @Override
-  void setBackgroundDrawable(
+  void initializeBackgroundDrawable(
       ColorStateList backgroundTint,
       PorterDuff.Mode backgroundTintMode,
       ColorStateList rippleColor,
@@ -82,7 +82,6 @@ void setBackgroundDrawable(
             RippleUtils.convertToRippleDrawableColor(rippleColor), rippleContent, null);
 
     contentBackground = rippleDrawable;
-    shadowViewDelegate.setBackgroundDrawable(contentBackground);
   }
 
   @Override