如何将 UIDatePicker 的日期设置为另一个日期？
我尝试过各种方法，包括：
[timepicker setDate: [NSDate mondayalarmtime]];
并且
timepicker.date = mondayalarmtime;
每次，这条线都会使模拟器崩溃。我的 mondayalarmtime 在 viewDidLoad 中定义如下：
NSDateFormatter *inputFormat = [[NSDateFormatter alloc] init];
[inputFormat setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate *inputDate = [inputFormat dateFromString: @"2011-01-01 09:00:00"];
NSLog (@"The input date %@", inputDate);
NSDate *mondayalarmtime = inputDate;
NSLog 返回：
The input date 2011-01-01 09:00:00 +0000
在尝试将 timepicker 设置为 mondayalarmtime 之前放置一个询问 mondayalarmtime 的 NSLog 返回相同的结果。
Mondays alarm time.. 2011-01-01 09:00:35 +0000
然后，当它尝试将 timepicker 日期设置为 mondayalarmtime 时，它会崩溃报告：
Program received signal: “EXC_BAD_ACCESS”.
I have tried various things, including:
[timepicker setDate: [NSDate mondayalarmtime]];
and
timepicker.date = mondayalarmtime;
Each time, this line crashes the simulator. My mondayalarmtime is defined in viewDidLoad here:
NSDateFormatter *inputFormat = [[NSDateFormatter alloc] init];
[inputFormat setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate *inputDate = [inputFormat dateFromString: @"2011-01-01 09:00:00"];
NSLog (@"The input date %@", inputDate);
NSDate *mondayalarmtime = inputDate;
The NSLog returns:
The input date 2011-01-01 09:00:00 +0000
Putting an NSLog asking for mondayalarmtime just before it tries to set thet imepicker to mondayalarmtime returns the same..
Mondays alarm time.. 2011-01-01 09:00:35 +0000
And then when it tries to set the timepicker date to mondayalarmtime, it crashes with the report:
Program received signal: “EXC_BAD_ACCESS”.
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您正在向 NSDate 发送 mondayalarmtime 消息。 NSDate 不理解此消息
尝试使用 mondayalarmtime 设置属性并调用 getter
You are sending the mondayalarmtime message to NSDate. NSDate does not understand this message
Try setting a property with mondayalarmtime and calling the getter