Fix RCTPicker crash

Summary: If user slide picker when picker item is zero, `UIPickerViewDelegate` will call `pickerView:didSelectRow:inComponent` row=0, `_items[row][@"value"]` will crash. Closes #12187 Differential Revision: D4709882 Pulled By: mkonicek fbshipit-source-id: 772c819d4eaef41ac983287877bda2918f40b1a7
facebook · Mar 15, 2017 · 1195a8f · 1195a8f
1 parent 6dab5dc
commit 1195a8f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/React/Views/RCTPicker.m b/React/Views/RCTPicker.m
@@ -98,7 +98,7 @@ - (void)pickerView:(__unused UIPickerView *)pickerView
       didSelectRow:(NSInteger)row inComponent:(__unused NSInteger)component
 {
   _selectedIndex = row;
-  if (_onChange) {
+  if (_onChange && _items.count > row) {
     _onChange(@{
       @"newIndex": @(row),
       @"newValue": RCTNullIfNil(_items[row][@"value"]),