iOS經典講解之倒計時按鈕JKCountDownButton的使用

作者：Loving_iOS

轉載請標明出處：http://blog.csdn.net/loving_ios/article/details/50786890

下載倒計時按鈕JKCountDownButton 代碼傳送門

JKCountDownButton,實現iOS倒計時按鈕,常用於註冊等發送驗證碼的時候進行倒計時操作。

下面介紹其用法：

代碼方式建立：

JKCountDownButton *button = [JKCountDownButton buttonWithType:UIButtonTypeCustom];button.frame = CGRectMake(100, 100, 100, 100);[button setTitle:@"擷取驗證碼" forState:UIControlStateNormal];button.backgroundColor = [UIColor blueColor];[self.view addSubview:button]; [button addToucheHandler:^(JKCountDownButton*sender, NSInteger tag) {    sender.enabled = NO;     [sender startWithSecond:10.0];     [sender didChange:^NSString *(JKCountDownButton *countDownButton,int second) {        NSString *title = [NSString stringWithFormat:@"剩餘%d秒",second];        return title;    }];    [sender didFinished:^NSString *(JKCountDownButton *countDownButton, int second) {        countDownButton.enabled = YES;        return @"點擊重新擷取";     }]; }];

用拖控制項方式建立：首先你要button繼承 JKCountDownButton類，type 設定成custom

@property (weak, nonatomic) IBOutlet JKCountDownButton *button; - (IBAction)countDown:(JKCountDownButton*)sender {sender.enabled = NO;//button type要 設定成custom 否則會閃動[sender startWithSecond:10.0]; [sender didChange:^NSString *(JKCountDownButton *countDownButton,int second) {    NSString *title = [NSString stringWithFormat:@"剩餘%d秒",second];    return title;}];[sender didFinished:^NSString *(JKCountDownButton *countDownButton, int second) {    countDownButton.enabled = YES;    return @"點擊重新擷取"; }];}

效果圖：