小时分钟秒到秒 [英] hours minutes seconds to seconds ios

问题描述

我想在ios中将时间小时分钟转换为秒。
这是否有内置方法？
我该怎么办？

I want to convert time hours minutes seconds to seconds in ios. Is there any in built method for this? How can I do this?

NSCalendar *gregorianCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];

NSDateComponents *componentsDiff = [gregorianCalendar components:NSHourCalendarUnit fromDate:[NSDate date]];

推荐答案

将插入日期的代码作为字符串，然后返回第二个数字。

Following code for the insert date as a string and then return numbers of second.

- (NSNumber *)dateToSecondConvert:(NSString *)string {

    NSArray *components = [string componentsSeparatedByString:@":"];

    NSInteger hours   = [[components objectAtIndex:0] integerValue];
    NSInteger minutes = [[components objectAtIndex:1] integerValue];
    NSInteger seconds = [[components objectAtIndex:2] integerValue];

    return [NSNumber numberWithInteger:(hours * 60 * 60) + (minutes * 60) + seconds];
}

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