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Passing Data between View Controllers
(43个答案)
3年前关闭。
我试图将数据从一个ViewController传递到另一个ViewController。
Firstviewcontroller.m
Secondviewcontroller.h
Secondviewcontroller.m
请帮我。我做错了。
我在
尽管我正在对此做适当的复制。
(43个答案)
3年前关闭。
我试图将数据从一个ViewController传递到另一个ViewController。
Firstviewcontroller.m
-(void)NavigateToAnotherScreen:(NSMutableDictionary*)dict{
[self performSegueWithIdentifier:@"NavDashBoardToInfo" sender:self];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:@"NavDashBoardToInfo"])
{
InfoViewController *vc = [segue destinationViewController];
[vc setAppointmentDictionary:dict];
}
}
Secondviewcontroller.h
@property (strong, nonatomic) NSMutableDictionary *AppointmentDictionary;
Secondviewcontroller.m
@synthesize AppointmentDictionary;
- (void)viewWillAppear:(BOOL)animated{
NSLog(@"dict===>%@",AppointmentDictionary); // This gives me null
}
请帮我。我做错了。
我在
AppointmentDictionary = (null)
中得到viewwillappear
。尽管我正在对此做适当的复制。
最佳答案
尝试这个
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.destinationViewController respondsToSelector:@selector(setAppointmentDictionary:)]) {
[segue.destinationViewController performSelector:@selector(setAppointmentDictionary:)
withObject:dict];
}
}