fix: tweak android q animations

packages/stack/src/TransitionConfigs/CardStyleInterpolators.tsx

@@ -201,31 +201,35 @@ export function forRevealFromBottomAndroid({
 
 /**
  * Standard Android-style reveal from the bottom for Android Q.
- * TODO: Update this with correct values when AOSP is updated.
  */
 export function forScaleFromCenterAndroid({
   current,
   next,
+  closing,
 }: CardInterpolationProps): CardInterpolatedStyle {
-  const cardOpacityFocused = interpolate(current.progress, {
-    inputRange: [0, 0.5, 1],
-    outputRange: [0, 1, 1],
-  });
-  const cardScaleFocused = interpolate(current.progress, {
-    inputRange: [0, 1],
-    outputRange: [0.9, 1],
+  const progress = add(current.progress, next ? next.progress : 0);
+
+  const opacity = interpolate(progress, {
+    inputRange: [0, 0.8, 1, 1.2, 2],
+    outputRange: [0, 0.5, 1, 0.33, 0],
   });
-  const cardScaleUnFocused = next
-    ? interpolate(next.progress, {
-        inputRange: [0, 1],
-        outputRange: [1, 1.1],
-      })
-    : 1;
+
+  const scale = cond(
+    closing,
+    interpolate(current.progress, {
+      inputRange: [0, 1],
+      outputRange: [0.9, 1],
+    }),
+    interpolate(progress, {
+      inputRange: [0, 1, 2],
+      outputRange: [0.85, 1, 1.1],
+    })
+  );
 
   return {
     containerStyle: {
-      opacity: cardOpacityFocused,
-      transform: [{ scale: cardScaleFocused }, { scale: cardScaleUnFocused }],
+      opacity,
+      transform: [{ scale }],
     },
   };
 }

packages/stack/src/TransitionConfigs/TransitionSpecs.tsx

@@ -18,7 +18,7 @@ export const TransitionIOSSpec: TransitionSpec = {
 
 /**
  * Configuration for activity open animation from Android Nougat.
- * See http://androidxref.com/7.1.1_r6/xref/frameworks/base/core/res/res/anim/activity_open_enter.xml
+ * See http://aosp.opersys.com/xref/android-7.1.2_r37/xref/frameworks/base/core/res/res/anim/activity_open_enter.xml
  */
 export const FadeInFromBottomAndroidSpec: TransitionSpec = {
   animation: 'timing',
@@ -30,7 +30,7 @@ export const FadeInFromBottomAndroidSpec: TransitionSpec = {
 
 /**
  * Configuration for activity close animation from Android Nougat.
- * See http://androidxref.com/7.1.1_r6/xref/frameworks/base/core/res/res/anim/activity_close_exit.xml
+ * See http://aosp.opersys.com/xref/android-7.1.2_r37/xref/frameworks/base/core/res/res/anim/activity_close_exit.xml
  */
 export const FadeOutToBottomAndroidSpec: TransitionSpec = {
   animation: 'timing',
@@ -42,26 +42,28 @@ export const FadeOutToBottomAndroidSpec: TransitionSpec = {
 
 /**
  * Approximate configuration for activity open animation from Android Pie.
- * See http://androidxref.com/9.0.0_r3/xref/frameworks/base/core/res/res/anim/activity_open_enter.xml
+ * See http://aosp.opersys.com/xref/android-9.0.0_r47/xref/frameworks/base/core/res/res/anim/activity_open_enter.xml
  */
 export const RevealFromBottomAndroidSpec: TransitionSpec = {
   animation: 'timing',
   config: {
     duration: 425,
     // This is super rough approximation of the path used for the curve by android
-    // See http://androidxref.com/9.0.0_r3/xref/frameworks/base/core/res/res/interpolator/fast_out_extra_slow_in.xml
+    // See http://aosp.opersys.com/xref/android-9.0.0_r47/xref/frameworks/base/core/res/res/interpolator/fast_out_extra_slow_in.xml
     easing: Easing.bezier(0.35, 0.45, 0, 1),
   },
 };
 
 /**
  * Approximate configuration for activity open animation from Android Q.
- * TODO: Update this with correct values when AOSP is updated.
+ * See http://aosp.opersys.com/xref/android-10.0.0_r2/xref/frameworks/base/core/res/res/anim/activity_open_enter.xml
  */
 export const ScaleFromCenterAndroidSpec: TransitionSpec = {
   animation: 'timing',
   config: {
-    duration: 425,
+    duration: 400,
+    // This is super rough approximation of the path used for the curve by android
+    // See http://aosp.opersys.com/xref/android-10.0.0_r2/xref/frameworks/base/core/res/res/interpolator/fast_out_extra_slow_in.xml
     easing: Easing.bezier(0.35, 0.45, 0, 1),
   },
 };