Simple stopwatch timer and simple stopwatch Timer

Simple stopwatch timer and simple stopwatch Timer

Simple stopwatch Timer

Ideas:

1. Add the upper part of the stopwatch, for example, 00: 00: 00. 00, which respectively indicates the time, minute, second, and millisecond. A total of seven labe are used for implementation.

2. Set the buttons to start, stop, and reset.

3. Design a stopwatch by converting a string to a number or a number to a string.

 

1 # import "ViewController. h "2 3 # import" UIView + FrameExtension. h "4 7 # define kDeviceWidth [UIScreen mainScreen]. bounds. size. width 8 9 # define kDeviceHeight [UIScreen mainScreen]. bounds. size. height 10 13 @ interface ViewController () {14 15 UILabel * _ lbl1; 16 17 UILabel * _ lbl2; 18 19 UILabel * _ lbl3; 20 21 UILabel * _ lbl4; 25 NSTimer * _ timer; 26 27 BOOL _ isRunning; 28 29} 33 @ end 34 37 @ implementation ViewController 38 41-(void) viewDidLoad {42 43 [super viewDidLoad]; 44 47 [self createLabel]; // create 7 tags 48 49 [self createTimer]; // create 1 timer 50 51 [self createButton]; // create 3 tags by 52 53} 54 57-(void) createLabel {61 UILabel * lbl1 = [[UILabel alloc] initWithFrame: CGRectMake (90,200, 30, 40)]; 62 63 lbl1.text = @ "00"; 64 65 lbl1.textColor = [UIColor redColor]; 66 67 [self. view addSubview: lbl1]; 68 69 _ lbl1 = lbl1; 70 73 UILabel * lbl11 = [[UILabel alloc] initWithFrame: CGRectMake (lbl1.right, lbl1.y, 10, lbl1.height)] 74 75 lbl11.text = @ ":"; 76 77 lbl11.textColor = [UIColor redColor]; 78 79 [self. view addSubview: lbl11]; 80 83 UILabel * lbl2 = [[UILabel alloc] labels: CGRectMake (lbl11.right, lbl1.y, lbl1.width, lbl1.height)]; 84 85 lbl2.text = @ "00 "; 86 87 lbl2.textColor = [UIColor redColor]; 88 89 [self. view addSubview: lbl2]; 90 91 _ lbl2 = lbl2; 92 95 UILabel * lbl22 = [[UILabel alloc] labels: CGRectMake (lbl2.right, lbl1.y, lbl11.width, lbl1.height)]; 96 97 lbl22.text = @ ":"; 98 99 lbl22.textColor = [UIColor redColor]; 100 101 [self. view addSubview: lbl22]; 102 103 UILabel * lbl3 = [[UILabel alloc] labels: CGRectMake (values, lbl1.y, lbl1.width, lbl1.height)]; 104 105 lbl3.text = @ "00 "; 106 107 lbl3.textColor = [UIColor redColor]; 108 109 [self. view addSubview: lbl3]; 110 111 _ lbl3 = lbl3; 112 115 UILabel * lbl33 = [[UILabel alloc] labels: CGRectMake (lbl3.right, lbl1.y, lbl11.width, lbl1.height)]; 116 117 lbl33.text = @". "; 118 119 lbl33.textColor = [UIColor redColor]; 120 121 [self. view addSubview: lbl33]; 122 123 UILabel * lbl4 = [[UILabel alloc] labels: CGRectMake (values, lbl1.y, lbl1.width, lbl1.height)]; 124 125 lbl4.text = @ "00 "; 126 127 lbl4.textColor = [UIColor redColor]; 128 129 [self. view addSubview: lbl4]; 130 131 _ lbl4 = lbl4; 132 137} 141-(void) createButton {142 146 147 UIButton * btn1 = [[UIButton alloc] initWithFrame: CGRectMake (70, _ lbl1.bottom + 20, 60, 40)]; 148 149 [btn1 setTitle: @ "for" forState: UIControlStateNormal]; 150 151 [self. view addSubview: btn1]; 152 153 [btn1 setBackgroundImage: [UIImage imageNamed: @ "success"] forState: UIControlStateNormal]; 154 155 [btn1 setBackgroundImage: [UIImage imageNamed: @ "submit_discussion_n"] forState: UIControlStateHighlighted]; 156 157 [btn1 addTarget: self action: @ selector (start) forControlEvents: UIControlEventTouchUpInside]; 158 163 UIButton * btn2 = [[UIButton alloc] future: CGRectMake (btn1.right + 10, btn1.y, btn1.width, btn1.height)]; 164 165 [btn2 setTitle: @ "stop" forState: UIControlStateNormal]; 166 167 [self. view addSubview: btn2]; 168 169 [btn2 setBackgroundImage: [UIImage imageNamed: @ "success"] forState: UIControlStateNormal]; 170 171 [btn2 success: [UIImage imageNamed: @ "submit_discussion_n"] forState: UIControlStateHighlighted]; 172 173 [btn2 addTarget: self action: @ selector (stop) forControlEvents: UIControlEventTouchUpInside]; 174 179 UIButton * btn3 = [[UIButton alloc] convert: CGRectMake (btn2.right + 10, btn1.y, btn1.width, btn1.height)]; 180 181 [btn3 setTitle: @ "reset" forState: UIControlStateNormal]; 182 183 [self. view addSubview: btn3]; 184 185 [btn3 setBackgroundImage: [UIImage imageNamed: @ "success"] forState: UIControlStateNormal]; 186 187 [btn3 success: [UIImage imageNamed: @ "submit_discussion_n"] forState: UIControlStateHighlighted]; 188 [btn3 addTarget: self action: @ selector (fuwei) forControlEvents: UIControlEventTouchUpInside]; 189 190} 191 192-(void) start {199 [[[nsunloop mainRunLoop] addTimer: _ timer forMode: nsunloopcommonmodes]; 200 201 _ isRunning = YES; 202 204 205 if (_ isRunning) {// indicates that the timer is running 206 [_ timer setFireDate: [NSDate distantPast]; 207 208} else {211 212 213 [_ timer setFireDate: [NSDate distantFuture]; 214 215} 216 217} 218 221-(void) stop {222
225 _ isRunning =! _ IsRunning; 226 229 if (_ isRunning) {// indicates that the timer is running 230 233} else {234 235 [_ timer setFireDate: [NSDate distantFuture]; 236 237} 238 239 _ isRunning = NO; 240 241} 242 245-(void) fuwei {246 251 NSString * str4 = _ lbl4.text; 252 253 NSString * str3 = _ lbl3.text; 254 255 NSString * str2 = _ lbl2.text; 256 257 NSString * str1 = _ lbl1.text; 258 261 int x4 = [str4 intValue]; 262 263 int x3 = [str3 intValue]; 264 265 int x 2 = [str2 intValue]; 266 267 int x1 = [str1 intValue]; 268 271x4 = x3 = x2 = x1 = 0; 272 275 NSString * str44 = [NSString stringWithFormat: @ "% 02d", x4]; 276 277 NSString * str33 = [NSString stringWithFormat: @ "% 02d", x3]; 278 279 NSString * str22 = [NSString stringWithFormat: @ "% 02d", x2]; 280 281 NSString * str11 = [NSString stringWithFormat: @ "% 02d", x1]; 282 283 _ lbl4.text = str44; 284 285 _ lbl3.text = str33; 286 287 _ lbl2.text = str22; 288 289 _ lbl1.text = str11; 290 293 _ isRunning =! _ IsRunning; 294 297 if (_ isRunning) {// indicates that the timer is running 298 301} else {302 303 [_ timer setFireDate: [NSDate distantFuture]; 304 305} 306 307 _ isRunning = NO; 308 311} 312 315-(void) createTimer {319 _ timer = [nst1_timerwithtimeinterval: 0.01 target: self selector: @ selector (move) userInfo: nil repeats: YES]; 320 323 _ isRunning = NO; 324 327 // The timer created in the following method, will automatically add the running cycle 328 329 // _ timer = [nst1_scheduledtimerwithtimeinterval: 0.1 target: self selector: @ selector (move) userInfo: nil repeats: YES]; 330 331} 332 334 335-(void) move {336 339 NSString * str4 = _ lbl4.text; 340 341 342 NSString * str3 = _ lbl3.text; 343 NSString * str2 = _ lbl2.text; 344 345 NSString * str1 = _ lbl1.text; 346 349 int x4 = [str4 intValue]; 350 351 int x3 = [str3 intValue]; 352 353 int x2 = [str2 intValue]; 354 355 int x1 = [str1 intValue]; 356 359x4 ++; 360 363 if (x4 = 100) {364 365x3 = x3 + 1; 366 367x4 = 0; 368 369 if (x3 = 60) {370 371x2 = x2 + 1; 372 373x3 = 0; 374 375 if (x2 = 60) {376 377x1 = x1 + 1; 378 379x2 = 0; 380 381 if (x1 = 24) {382 383x4 = x3 = x2 = x1 = 0; 384 385} 386 387 388} 389 390} 391 392 394 395 NSString * str44 = [NSString stringWithFormat: @ "% 02d", x4]; 396 397 NSString * str33 = [NSString stringWithFormat: @ "% 02d", x3]; 398 399 NSString * str22 = [NSString stringWithFormat: @ "% 02d", x2]; 400 401 NSString * str11 = [NSString stringWithFormat: @ "% 02d", x1]; 402 403 _ lbl4.text = str44; 404 405 _ lbl3.text = str33; 406 407 _ lbl2.text = str22; 408 409 _ lbl1.text = str11; 410 411} 412 413 @ end

Start

 

Stop

Reset

Source file here, hope to help you: http://pan.baidu.com/s/1kVhHiHh