diff --git a/src/com/android/settings/datetime/timezone/BaseTimeZonePicker.java b/src/com/android/settings/datetime/timezone/BaseTimeZonePicker.java index adbedee7998..120d8ca7391 100644 --- a/src/com/android/settings/datetime/timezone/BaseTimeZonePicker.java +++ b/src/com/android/settings/datetime/timezone/BaseTimeZonePicker.java @@ -164,7 +164,9 @@ public abstract class BaseTimeZonePicker extends InstrumentedFragment @Override public boolean onMenuItemActionExpand(MenuItem item) { // To prevent a large space on tool bar. - mAppBarLayout.setExpanded(false /*expanded*/, false /*animate*/); + if (mAppBarLayout != null) { + mAppBarLayout.setExpanded(false /*expanded*/, false /*animate*/); + } // To prevent user can expand the collapsing tool bar view. ViewCompat.setNestedScrollingEnabled(mRecyclerView, false); return true; @@ -173,7 +175,9 @@ public abstract class BaseTimeZonePicker extends InstrumentedFragment @Override public boolean onMenuItemActionCollapse(MenuItem item) { // We keep the collapsed status after user cancel the search function. - mAppBarLayout.setExpanded(false /*expanded*/, false /*animate*/); + if (mAppBarLayout != null) { + mAppBarLayout.setExpanded(false /*expanded*/, false /*animate*/); + } ViewCompat.setNestedScrollingEnabled(mRecyclerView, true); return true; } @@ -196,6 +200,10 @@ public abstract class BaseTimeZonePicker extends InstrumentedFragment } private void autoSetCollapsingToolbarLayoutScrolling() { + if (mAppBarLayout == null) { + return; + } + CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) mAppBarLayout.getLayoutParams(); AppBarLayout.Behavior behavior = new AppBarLayout.Behavior();