Merge "Make NotificationShelf nullable in StackScrollAlgorithm."
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/stack/AmbientState.java b/packages/SystemUI/src/com/android/systemui/statusbar/stack/AmbientState.java
index 4d8da44..ebf4cda 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/stack/AmbientState.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/stack/AmbientState.java
@@ -16,6 +16,7 @@
package com.android.systemui.statusbar.stack;
+import android.annotation.Nullable;
import android.content.Context;
import android.view.View;
@@ -236,6 +237,7 @@
mShelf = shelf;
}
+ @Nullable
public NotificationShelf getShelf() {
return mShelf;
}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java b/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java
index 7374f11..2ce6df2 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java
@@ -122,7 +122,9 @@
}
private void updateShelfState(StackScrollState resultState, AmbientState ambientState) {
NotificationShelf shelf = ambientState.getShelf();
- shelf.updateState(resultState, ambientState);
+ if (shelf != null) {
+ shelf.updateState(resultState, ambientState);
+ }
}
private void updateClipping(StackScrollState resultState,
@@ -495,6 +497,10 @@
*/
private void clampPositionToShelf(ExpandableViewState childViewState,
AmbientState ambientState) {
+ if (ambientState.getShelf() == null) {
+ return;
+ }
+
int shelfStart = ambientState.getInnerHeight()
- ambientState.getShelf().getIntrinsicHeight();
childViewState.yTranslation = Math.min(childViewState.yTranslation, shelfStart);
@@ -556,7 +562,8 @@
} else if (i == 0 && ambientState.isAboveShelf(child)) {
// In case this is a new view that has never been measured before, we don't want to
// elevate if we are currently expanded more then the notification
- int shelfHeight = ambientState.getShelf().getIntrinsicHeight();
+ int shelfHeight = ambientState.getShelf() == null ? 0 :
+ ambientState.getShelf().getIntrinsicHeight();
float shelfStart = ambientState.getInnerHeight()
- shelfHeight + ambientState.getTopPadding()
+ ambientState.getStackTranslation();