[Snackbar] closes #1036, Consider Y translation in snackbar as soon it's meassured

lib/java/com/google/android/material/snackbar/BaseTransientBottomBar.java

@@ -333,6 +333,12 @@ public void run() {
 
   @Nullable private final AccessibilityManager accessibilityManager;
 
+  /** @hide */
+  @RestrictTo(LIBRARY_GROUP)
+  protected interface OnMeasureListener {
+    void onMeasure(View v);
+  }
+
   /**
    * Constructor for the transient bottom bar.
    *
@@ -747,6 +753,21 @@ protected SwipeDismissBehavior<? extends View> getNewBehavior() {
   }
 
   final void showView() {
+    this.view.setOnMeasureListener(new OnMeasureListener()
+    {
+      @Override
+      public void onMeasure(View v)
+      {
+        if (view.getAnimationMode() == ANIMATION_MODE_SLIDE && shouldAnimate()) {
+          int translationYBottom = getTranslationYBottom();
+          if (USE_OFFSET_API) {
+            ViewCompat.offsetTopAndBottom(view, translationYBottom);
+          } else {
+            view.setTranslationY(translationYBottom);
+          }
+        }
+      }
+    });
     if (this.view.getParent() == null) {
       ViewGroup.LayoutParams lp = this.view.getLayoutParams();
 
@@ -1076,7 +1097,7 @@ public void onAnimationUpdate(@NonNull ValueAnimator animator) {
   }
 
   private int getTranslationYBottom() {
-    int translationY = view.getHeight();
+    int translationY = view.getMeasuredHeight();
     LayoutParams layoutParams = view.getLayoutParams();
     if (layoutParams instanceof MarginLayoutParams) {
       translationY += ((MarginLayoutParams) layoutParams).bottomMargin;
@@ -1148,6 +1169,7 @@ public boolean onTouch(View v, MotionEvent event) {
           }
         };
 
+    private BaseTransientBottomBar.OnMeasureListener onMeasureListener;
     @Nullable private BaseTransientBottomBar<?> baseTransientBottomBar;
     @Nullable ShapeAppearanceModel shapeAppearanceModel;
     @AnimationMode private int animationMode;
@@ -1269,6 +1291,13 @@ protected void onLayout(boolean changed, int l, int t, int r, int b) {
       }
     }
 
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+      super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+      if (onMeasureListener != null)
+        onMeasureListener.onMeasure(this);
+    }
+
     @Override
     protected void onAttachedToWindow() {
       super.onAttachedToWindow();
@@ -1300,6 +1329,10 @@ public void setLayoutParams(ViewGroup.LayoutParams params) {
       }
     }
 
+    void setOnMeasureListener(BaseTransientBottomBar.OnMeasureListener listener) {
+      onMeasureListener = listener;
+    }
+
     @AnimationMode
     int getAnimationMode() {
       return animationMode;