Objective-C 프로그래밍을 사용하는 Xcode를 처음 사용했습니다. 나는 스톱워치 프로그램을 가지고있다. 버튼을 클릭하여 여러 개의 초시계를 추가해야합니다. 그것을 할 방법이 있습니까?Xcode의 버튼을 클릭하여 다중 스톱워치 레이블 추가
내 기존 코드는 여기에 있습니다 :
stopwatchviewcontroller.h
#import <UIKit/UIKit.h>
@interface StopWatchViewController : UIViewController {
UILabel *stopWatchLabel;
IBOutlet UIButton *btnStartStop;
NSTimer *stopWatchTimer; // Store the timer that fires after a certain time
NSDate *startDate; // Stores the date of the click on the start button
}
@property (nonatomic, retain) UIButton *btnStartStop;
@property (nonatomic, retain) IBOutlet UILabel *stopWatchLabel;
- (IBAction)onStartPressed:(id)sender;
- (IBAction)onStopPressed:(id)sender;
- (IBAction)AddStopwatch:(id)sender;
@end
stopwatchviewcontroller.m 내가 Addstopwatch 방법에 무엇을 할 것인지 모르는
#import "StopWatchViewController.h"
@implementation StopWatchViewController
@synthesize stopWatchLabel;
- (void)dealloc
{
[stopWatchLabel release];
[super dealloc];
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
/*
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
[super viewDidLoad];
}
*/
- (void)viewDidUnload
{
[self setStopWatchLabel:nil];
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
- (void)updateTimer
{
NSDate *currentDate = [NSDate date];
NSTimeInterval timeInterval = [currentDate timeIntervalSinceDate:startDate];
NSDate *timerDate = [NSDate dateWithTimeIntervalSince1970:timeInterval];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"HH:mm:ss.SSS"];
[dateFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0.0]];
NSString *timeString=[dateFormatter stringFromDate:timerDate];
stopWatchLabel.text = timeString;
[dateFormatter release];
}
- (IBAction)onStartPressed:(id)sender {
if ([[btnStartStop titleForState:UIControlStateNormal]
isEqualToString:@"Start Clock"])
{
startDate = [[NSDate date]retain];
// Create the stop watch timer that fires every 10 ms
stopWatchTimer = [NSTimer scheduledTimerWithTimeInterval:1.0/10.0
target:self
selector:@selector(updateTimer)
userInfo:nil
repeats:YES];
[btnStartStop setTitle:@"Stop Clock" forState:UIControlStateNormal];
}
else
{
//---stop the timer---
[timer invalidate];
//---change the caption back to "Start Clock"---
[btnStartStop setTitle:@"Start Clock" forState:UIControlStateNormal];
}
}
- (IBAction)AddStopwatch:(id)sender {
}
@end
, PLZ 누군가가 나에게 제공 그 해결책. 사전에 덕분에 ...
또 다른
UIButton
을 추가해야 할 방법을 무엇을 Addstopwatch해야 할 ??? – Mutaweaddstopwatch 버튼을 클릭하면 여러 스톱워치 라벨을 추가하고 싶습니다. –
Ive가 답변을 추가했습니다. 도움이 되었으면 – Mutawe