最近做项目遇到一个小问题，获取码证码，通常这种界面直接用xib来布局这个注册页面，以往用的是纯代码，然后发现了一个小bug，以前用纯代码写的获取验证码这个功能正常的，但是现在用xib拖拽的按钮，虽然可以实现，但是文字会闪烁，这到底是为什么纯代码没有问题，xib就出现这个问题呢？我也不知道，其实这里第一次写这个博客，写得有点烂，先上代码
#import "ViewController.h"
@interface ViewController ()
/* 时间 */
@property (nonatomic, assign) int timeCount;
/* 定时器 */
@property (nonatomic, strong) NSTimer *timer;
/* 按钮 */
@property (nonatomic, weak) UIButton *messageButton;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
//创建按钮
UIButton *btn = [[UIButton alloc] init];
[btn addTarget:self action:@selector(sendMessageClick) forControlEvents:UIControlEventTouchUpInside];
[btn setTitle:@"获取码证码" forState:UIControlStateNormal];
btn.frame = CGRectMake(100, 100, 200, 40);
[btn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
btn.backgroundColor = [UIColor redColor];
[self.view addSubview:btn];
self.messageButton = btn;
}
//侦听
- (void)sendMessageClick
{
self.messageButton.backgroundColor = [UIColor grayColor];
self.messageButton.userInteractionEnabled = NO;
//开始倒计时
[self beginCalculationTime];
}
//开始倒计时
- (void)beginCalculationTime
{
self.timeCount = 10;
[self.messageButton setTitle:@"重新获取(60)" forState:UIControlStateNormal];
self.timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(refreshTime) userInfo:nil repeats:YES];
[self.timer fire];
}
//timer
- (void)refreshTime
{
self.label.text = [NSString stringWithFormat:@"重新获取(%ld)",(long)self.timeCount];
self.timeCount -= 1;
[self.messageButton setTitle:[NSString stringWithFormat:@"重新获取(%ld)",(long)self.timeCount] forState:UIControlStateNormal];
if (self.timeCount == 0) {
[self.messageButton setTitle:@"重新获取" forState:UIControlStateNormal];
[self.timer invalidate];
self.messageButton.userInteractionEnabled = YES;
self.messageButton.backgroundColor = [UIColor redColor];
}
}
@end