Ios 如何使用objective-c格式化从youtube api v3 reuqest返回的持续时间?
如何使用objective-c将此时间段“PT1H20M10S”格式化为“1:20:10”?Ios 如何使用objective-c格式化从youtube api v3 reuqest返回的持续时间?,ios,objective-c,iphone,youtube-data-api,Ios,Objective C,Iphone,Youtube Data Api,如何使用objective-c将此时间段“PT1H20M10S”格式化为“1:20:10”? 这是从对youtube的请求返回的。它给了我一个时间段。如何设置“PT1H20M10S”的样式,使其在我的应用程序中显示为“1:20:10”,以便于人们阅读?您可以使用扫描仪提取以下数字: NSString*应答器字符串 NSScanner*扫描仪=[NSScanner scannerWithString:originalString]; NSCharacterSet*数字=[NSCharacterSe
这是从对youtube的请求返回的。它给了我一个时间段。如何设置“PT1H20M10S”的样式,使其在我的应用程序中显示为“1:20:10”,以便于人们阅读?您可以使用扫描仪提取以下数字: NSString*应答器字符串 NSScanner*扫描仪=[NSScanner scannerWithString:originalString]; NSCharacterSet*数字=[NSCharacterSet characterSetWithCharactersInString:@“0123456789”] [scanner scanupCharactersFromset:numbers-intoString:NULL] [扫描仪扫描字符从集合:数字到字符串:&数字字符串]
整数=[answerString integerValue] 您可以使用以下代码:
- (NSString *)parseDuration:(NSString *)duration {
NSInteger hours = 0;
NSInteger minutes = 0;
NSInteger seconds = 0;
NSRange timeRange = [duration rangeOfString:@"T"];
duration = [duration substringFromIndex:timeRange.location];
while (duration.length > 1) {
duration = [duration substringFromIndex:1];
NSScanner *scanner = [NSScanner.alloc initWithString:duration];
NSString *part = [NSString.alloc init];
[scanner scanCharactersFromSet:[NSCharacterSet decimalDigitCharacterSet] intoString:&part];
NSRange partRange = [duration rangeOfString:part];
duration = [duration substringFromIndex:partRange.location + partRange.length];
NSString *timeUnit = [duration substringToIndex:1];
if ([timeUnit isEqualToString:@"H"])
hours = [part integerValue];
else if ([timeUnit isEqualToString:@"M"])
minutes = [part integerValue];
else if ([timeUnit isEqualToString:@"S"])
seconds = [part integerValue];
}
return [NSString stringWithFormat:@"%02d:%02d:%02d", hours, minutes, seconds];
}
您还可以阅读ISO_8601的持续时间。试试这段代码。。我使用此代码获得了正确的输出
func formatDurations (sender : String) ->String{
var timeDuration : NSString!
let string: NSString = sender
if string.rangeOfString("H").location == NSNotFound && string.rangeOfString("M").location == NSNotFound{
if string.rangeOfString("S").location == NSNotFound {
timeDuration = NSString(format: "00:00")
} else {
var secs: NSString = sender
secs = secs.substringFromIndex(secs.rangeOfString("PT").location + "PT".characters.count)
secs = secs.substringToIndex(secs.rangeOfString("S").location)
timeDuration = NSString(format: "00:%02d", secs.integerValue)
}
}
else if string.rangeOfString("H").location == NSNotFound {
var mins: NSString = sender
mins = mins.substringFromIndex(mins.rangeOfString("PT").location + "PT".characters.count)
mins = mins.substringToIndex(mins.rangeOfString("M").location)
if string.rangeOfString("S").location == NSNotFound {
timeDuration = NSString(format: "%02d:00", mins.integerValue)
} else {
var secs: NSString = sender
secs = secs.substringFromIndex(secs.rangeOfString("M").location + "M".characters.count)
secs = secs.substringToIndex(secs.rangeOfString("S").location)
timeDuration = NSString(format: "%02d:%02d", mins.integerValue, secs.integerValue)
}
} else {
var hours: NSString = sender
hours = hours.substringFromIndex(hours.rangeOfString("PT").location + "PT".characters.count)
hours = hours.substringToIndex(hours.rangeOfString("H").location)
if string.rangeOfString("M").location == NSNotFound && string.rangeOfString("S").location == NSNotFound {
timeDuration = NSString(format: "%02d:00:00", hours.integerValue)
} else if string.rangeOfString("M").location == NSNotFound {
var secs: NSString = sender
secs = secs.substringFromIndex(secs.rangeOfString("H").location + "H".characters.count)
secs = secs.substringToIndex(secs.rangeOfString("S").location)
timeDuration = NSString(format: "%02d:00:%02d", hours.integerValue, secs.integerValue)
} else if string.rangeOfString("S").location == NSNotFound {
var mins: NSString = sender
mins = mins.substringFromIndex(mins.rangeOfString("H").location + "H".characters.count)
mins = mins.substringToIndex(mins.rangeOfString("M").location)
timeDuration = NSString(format: "%02d:%02d:00", hours.integerValue, mins.integerValue)
} else {
var secs: NSString = sender
secs = secs.substringFromIndex(secs.rangeOfString("M").location + "M".characters.count)
secs = secs.substringToIndex(secs.rangeOfString("S").location)
var mins: NSString = sender
mins = mins.substringFromIndex(mins.rangeOfString("H").location + "H".characters.count)
mins = mins.substringToIndex(mins.rangeOfString("M").location)
timeDuration = NSString(format: "%02d:%02d:%02d", hours.integerValue, mins.integerValue, secs.integerValue)
}
}
return timeDuration as String
}
使用字符串扩展名:
extension String{
func parseVideoDurationOfYoutubeAPI(videoDuration: String?) -> String {
var videoDurationString = videoDuration! as NSString
var hours: Int = 0
var minutes: Int = 0
var seconds: Int = 0
let timeRange = videoDurationString.rangeOfString("T")
videoDurationString = videoDurationString.substringFromIndex(timeRange.location)
while videoDurationString.length > 1 {
videoDurationString = videoDurationString.substringFromIndex(1)
let scanner = NSScanner(string: videoDurationString as String) as NSScanner
var part: NSString?
scanner.scanCharactersFromSet(NSCharacterSet.decimalDigitCharacterSet(), intoString: &part)
let partRange: NSRange = videoDurationString.rangeOfString(part! as String)
videoDurationString = videoDurationString.substringFromIndex(partRange.location + partRange.length)
let timeUnit: String = videoDurationString.substringToIndex(1)
if (timeUnit == "H") {
hours = Int(part as! String)!
}
else if (timeUnit == "M") {
minutes = Int(part as! String)!
}
else if (timeUnit == "S") {
seconds = Int(part! as String)!
}
else{
}
}
return String(format: "%02d:%02d:%02d", hours, minutes, seconds)
}
}
用法:
override func viewWillAppear(animated: Bool) {
let youtubeVideoDurationString = "PT15M51S"
let result_Hour_Minute_Second = youtubeVideoDurationString.parseVideoDurationOfYoutubeAPI("PT15M51S") as String
print("result_Hour_Minute_Second: \(result_Hour_Minute_Second)")
}
如果视频长度为一小时,则格式为PT#H#M#S,如果最长为24小时,则格式为p#DT#H#M#S。请检查下面的修改方法:
NSString *formattedDuration = @"";
NSString *durationregX = @"^(P\\d+DT)[A-Z0-9]+$";
NSPredicate *checking = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", durationregX];
BOOL isDayLengthVideo = [checking evaluateWithObject: duration];
long getDayHours = 0;
if(isDayLengthVideo){
NSArray *sliceDuration = [duration componentsSeparatedByString:@"DT"];
NSString *getDay = [sliceDuration[0] stringByReplacingOccurrencesOfString:@"P" withString:@""];
getDayHours = (long)[getDay integerValue] * 24;
formattedDuration = [[[sliceDuration[1] stringByReplacingOccurrencesOfString:@"H" withString:@":"] stringByReplacingOccurrencesOfString:@"M" withString:@":"] stringByReplacingOccurrencesOfString:@"S" withString:@""];
}else{
formattedDuration = [[[[duration stringByReplacingOccurrencesOfString:@"PT" withString:@""] stringByReplacingOccurrencesOfString:@"H" withString:@":"] stringByReplacingOccurrencesOfString:@"M" withString:@":"] stringByReplacingOccurrencesOfString:@"S" withString:@""];
}
NSString *clean_duration = @"";
NSArray *components = [formattedDuration componentsSeparatedByString:@":"];
NSInteger loopchecker = 0;
for (NSString *component in components) {
loopchecker++;
clean_duration = clean_duration.length > 0 ? [NSString stringWithFormat:@"%@:", clean_duration] : clean_duration; // ""
if(component.length < 2){
clean_duration = loopchecker == 1 && isDayLengthVideo ? [NSString stringWithFormat:@"%ld", ([component integerValue] + getDayHours)] : [NSString stringWithFormat:@"%@0%@", clean_duration, component];
return clean_duration;
continue;
}
clean_duration = [NSString stringWithFormat: @"%@%@", clean_duration, component];
}
return clean_duration;
NSString*formattedDuration=@”;
NSString*durationregX=@“^(P\\d+DT)[A-Z0-9]+$”;
NSPredicate*checking=[NSPredicate谓词格式:@“SELF MATCHES%@”,durationregX];
BOOL isDayLengthVideo=[检查evaluateWithObject:duration];
长getDayHours=0;
if(isDayLengthVideo){
NSArray*sliceDuration=[由字符串分隔的持续时间组件:@“DT”];
NSString*getDay=[sliceDuration[0]stringByReplacingOccurrencesOfString:@“P”带字符串:@”“;
getDayHours=(长)[getDay integerValue]*24;
formattedDuration=[[sliceDuration[1]StringByReplacingOccurrencessOfString:@“H”带字符串:@:“]stringByReplacingOccurrencesOfString:@“M”带字符串:@:“]stringByReplacingOccurrencesOfString:@“S”带字符串:@];
}否则{
formattedDuration=[[[duration StringByReplacingOccurrences of String:@“PT”with String:@”“]StringByReplacingOccurrences of String:@“H”with String:@:“]StringByReplacingOccurrences of String:@“M”with String:@:“]StringByReplacingOccurrences of String:@“S”with String:@];
}
NSString*clean_duration=@;
NSArray*components=[formattedDuration components由字符串分隔:@]:“;
NSInteger loopchecker=0;
用于(NSString*组件中的组件){
loopchecker++;
clean_duration=clean_duration.length>0?[NSString stringWithFormat:@“%@:,clean_duration]:clean_duration;/“”
如果(组件长度<2){
clean_duration=loopchecker==1&&isDayLengthVideo?[NSString stringWithFormat:@“%ld”,([component integerValue]+getDayHours]:[NSString stringWithFormat:@“%@0%@”,clean_duration,component];
返回清洁时间;
继续;
}
清理持续时间=[NSString stringWithFormat:@“%@%@”,清理持续时间,组件];
}
返回清洁时间;
简单Swift 4.2代码
func parseDuration(videoDuration: String?) -> String {
var hours: Int = 0
var minutes: Int = 0
var seconds: Int = 0
if let videoDuration = videoDuration {
var lastIndex = videoDuration.startIndex
if let indexT = videoDuration.index(of: "T") {
lastIndex = videoDuration.index(after: indexT)
if let indexH = videoDuration.index(of: "H") {
let hrs = String(videoDuration[lastIndex..<indexT])
hours = Int(hrs) ?? 0
lastIndex = videoDuration.index(after: indexH)
}
if let indexM = videoDuration.index(of: "M") {
let min = String(videoDuration[lastIndex..<indexM])
minutes = Int(min) ?? 0
lastIndex = videoDuration.index(after: indexM)
}
if let indexS = videoDuration.index(of: "S") {
let sec = String(videoDuration[lastIndex..<indexS])
seconds = Int(sec) ?? 0
}
}
}
return String(format: "%02d:%02d:%02d", hours, minutes, seconds)
}
func parseDuration(videoDuration:String?)->String{
变量小时数:Int=0
变量分钟数:Int=0
变量秒数:Int=0
如果让videoDuration=videoDuration{
var lastIndex=videoDuration.startIndex
如果let indexT=videoDuration.index(of:“T”){
lastIndex=videoDuration.index(后面是:indexT)
如果let indexH=videoDuration.index(of:“H”){
设hrs=字符串(视频持续时间)[lastIndex..可能是重复的@user2027279吗?Alaa Agwa您希望它是以秒为单位的实际时间,还是以字符串格式?我认为两个简单的搜索将给出答案,您只需要搜索如何从NSString解析NSDate以及如何格式化该日期,两者都使用NSDateFormatternice ans您的答案为+1。:D