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Fix NPEs in DatePicker, TimePicker demos (#6509)
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@ -24,7 +24,7 @@ class _DatePickerDemoState extends State<DatePickerDemo> {
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firstDate: new DateTime(2015, 8),
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lastDate: new DateTime(2101)
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);
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if (picked != _selectedDate) {
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if (picked != null && picked != _selectedDate) {
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setState(() {
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_selectedDate = picked;
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});
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@ -21,7 +21,7 @@ class _TimePickerDemoState extends State<TimePickerDemo> {
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context: context,
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initialTime: _selectedTime
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);
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if (picked != _selectedTime) {
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if (picked != null && picked != _selectedTime) {
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setState(() {
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_selectedTime = picked;
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});
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