创建文件，继承UIButton
.h中
#import@interface LButton : UIButton
- (void)startWithTimerCount:(NSInteger)count;
- (void)stopTimer;
@end
.m中
@interface LButton ()
{
NSInteger timerCount;
}
@property (nonatomic, strong) NSTimer *timerCoder;
@property (nonatomic) BOOL buttonEnabled;
@end
@implementation LButton
- (void)startWithTimerCount:(NSInteger)count
{
[self stopTimer];
NSString *buttonTitle = [[NSString strWithIntNum:count] stringByAppendingString:@"秒后重发"];
[self setButtonTitle:buttonTitle];
self.buttonEnabled = NO;
timerCount = count-1;
_timerCoder = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(timerAction) userInfo:nil repeats:YES];
}
- (void)stopTimer
{
if (_timerCoder) {
[_timerCoder invalidate];
_timerCoder = nil;
self.buttonEnabled = YES;
}
}
- (void)timerAction {
if (timerCount > 0) {
NSString *title = [[NSString strWithIntNum:timerCount] stringByAppendingString:@"秒后重发"];
[self setButtonTitle:title];
}else
{
[self stopTimer];
}
timerCount -= 1;
}
- (void)setButtonTitle:(NSString *)title {
self.titleLabel.text = title;
[self setTitle:title forState:UIControlStateNormal];
}
- (void)setButtonEnabled:(BOOL)buttonEnabled
{
_buttonEnabled = buttonEnabled;
if (buttonEnabled) {
[self setButtonTitle:@"重新发送"];
self.alpha = 1.0;
}else
{
self.alpha = 0.5;
}
self.enabled = buttonEnabled;
}
@end
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