手機驗證碼

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一個軟體在使用者註冊的時候，往往是需要驗證碼的。也就是要先把驗證碼發在手機上，然後，使用者在軟體中輸入，若驗證碼正確，註冊使用者才可登陸。

 

- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view.        //BOOL值預設為NO。    NSLog(@"---timeStart--%d-----",timeStart);        //發送驗證碼到手機上-Button    UIButton *sendYZM=[UIButton buttonWithType:UIButtonTypeCustom];    [sendYZM setFrame:CGRectMake(50, 100, 250, 50)];    [sendYZM setBackgroundColor:[UIColor redColor]];    [sendYZM setTitle:@"發送註冊驗證碼到手機上" forState:UIControlStateNormal];    [sendYZM setTitleColor:[UIColor colorWithRed:66/255.0 green:66/255.0 blue:221/255.0 alpha:1.0] forState:UIControlStateNormal];    [sendYZM addTarget:self action:@selector(doClickButton:) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:sendYZM];}-(void)doClickButton:(UIButton *)btn{    timeStart=YES;    sysTimer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(timerFireMethod:) userInfo:nil repeats:YES];    // 可以通過fire這個方法去觸發timer，即使timer的firing time沒有到達    [sysTimer fire];    [self getAuthCode];}//隨時更新驗證碼發送的時間- (void)timerFireMethod:(NSTimer *)timer{    //定義一個NSCalendar對象    NSCalendar *cal = [NSCalendar currentCalendar];    //初始化目標時間...    NSDateComponents *endTime = [[NSDateComponents alloc] init];    //得到目前時間    NSDate *today = [NSDate date];    NSDate *date = [NSDate dateWithTimeInterval:60 sinceDate:today];    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];    [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];    NSString *dateString = [dateFormatter stringFromDate:date];        static int year;    static int month;    static int day;    static int hour;    static int minute;    static int second;        if(timeStart) {        //從NSDate中取出年月日，時分秒，但是只能取一次        year = [[dateString substringWithRange:NSMakeRange(0, 4)] intValue];        month = [[dateString substringWithRange:NSMakeRange(5, 2)] intValue];        day = [[dateString substringWithRange:NSMakeRange(8, 2)] intValue];        hour = [[dateString substringWithRange:NSMakeRange(11, 2)] intValue];        minute = [[dateString substringWithRange:NSMakeRange(14, 2)] intValue];        second = [[dateString substringWithRange:NSMakeRange(17, 2)] intValue];        timeStart = NO;    }        [endTime setYear:year];    [endTime setMonth:month];    [endTime setDay:day];    [endTime setHour:hour];    [endTime setMinute:minute];    [endTime setSecond:second];        //把目標時間裝載入date    NSDate *todate = [cal dateFromComponents:endTime];        //用來得到具體的時差，是為了統一成北京時間    unsigned int unitFlags = NSYearCalendarUnit| NSMonthCalendarUnit| NSDayCalendarUnit| NSHourCalendarUnit| NSMinuteCalendarUnit| NSSecondCalendarUnit;        NSDateComponents *d = [cal components:unitFlags fromDate:today toDate:todate options:0];    NSLog(@"----%d---",[d second]);    if([d second] < 60 && [d second] > 0) {        NSString *miao = [NSString stringWithFormat:@"%d",[d second]];        NSLog(@"---miao----%@",miao);                UIButton *sendYZM=[UIButton buttonWithType:UIButtonTypeCustom];        [sendYZM setFrame:CGRectMake(50, 100, 250, 50)];        [sendYZM setBackgroundColor:[UIColor redColor]];        [sendYZM setTitle:[NSString stringWithFormat:@"重新發送驗證碼(%@秒)",miao] forState:UIControlStateNormal];        [sendYZM setTitleColor:[UIColor colorWithRed:66/255.0 green:66/255.0 blue:221/255.0 alpha:1.0] forState:UIControlStateNormal];        [self.view addSubview:sendYZM];           }else if([d second] == 0) {        [sysTimer invalidate];                UIButton *sendYZM=[UIButton buttonWithType:UIButtonTypeCustom];        [sendYZM setFrame:CGRectMake(50, 100, 250, 50)];        [sendYZM setBackgroundColor:[UIColor redColor]];        [sendYZM setTitle:@"重新發送驗證碼" forState:UIControlStateNormal];        [sendYZM setTitleColor:[UIColor colorWithRed:66/255.0 green:66/255.0 blue:221/255.0 alpha:1.0] forState:UIControlStateNormal];        [sendYZM addTarget:self action:@selector(doClickButton:) forControlEvents:UIControlEventTouchUpInside];        [self.view addSubview:sendYZM];    }}- (void)getAuthCode{    //將電話號碼發送到伺服器，伺服器返回驗證碼。當驗證碼和註冊使用者輸入一樣的時候，則可以進行下一步操作。}