剩下時間來響鬧嗎？（使用完整鬧鐘應用程序）

Question

如果您想留下足夠的時間來響鬧。然後你可以使用這種方法，並在第二天你可以設置day = day + 1;根據你。它會返回當前時間和設置的鬧鐘時間之間的差異。

Answer 1

+(NSString*)getDifference:(NSString*)setTime 
{ 
NSDateComponents *components = [[NSCalendar currentCalendar] components:NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit | NSWeekdayCalendarUnit fromDate:[NSDate date]]; 

int day=[components day]; 
int month=[components month]; 
int year=[components year]; 

//day=day+1; 

NSDateFormatter *formatter; 
NSString *CurrentdateString; 

formatter = [[NSDateFormatter alloc] init]; 
[formatter setDateFormat:@"dd-MM-yyyy hh:mm a"]; 

CurrentdateString = [formatter stringFromDate:[NSDate date]]; 

//settime=@"2:40 PM"; 

NSDate *currentDate=[formatter dateFromString:CurrentdateString]; 
NSDate *setDate=[formatter dateFromString:[NSString stringWithFormat:@"%i-%i-%i %@",day,month,year,setTime]]; 

NSLog(@"current date is %@",[formatter stringFromDate:currentDate]); 
NSLog(@"setted date string is %@",[formatter stringFromDate:setDate]); 

NSTimeInterval interval=[setDate timeIntervalSinceDate:currentDate]; 

int totalmin=(int)(interval/60); 

int hour=(int)(totalmin/60); 
int min=(int)fmod(totalmin,60); 

[formatter release]; 

if (hour<0 || min<0) { 

    totalmin=hour*60+min; 
    totalmin=(24*60)+totalmin; 

    hour=totalmin/60; 
    min=fmod(totalmin, 60); 
} 

NSString *returnString=[[NSString alloc] init]; 
returnString=[NSString stringWithFormat:@"%i hr. %i min.",hour,min]; 

NSLog(@"date string is %i:%i",hour,min); 
return returnString; 
}