-(void)timeCountDown
{
__blockinttimeout =59;
dispatch_queue_tque =dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0);
timer=dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER,0,0, que);
dispatch_source_set_timer(timer,DISPATCH_TIME_NOW,1.0*NSEC_PER_SEC,0*NSEC_PER_SEC);
dispatch_source_set_event_handler(timer, ^{
if(timeout<=0){//倒计时结束，关闭
dispatch_source_cancel(timer);
dispatch_async(dispatch_get_main_queue(), ^{
//设置界面的按钮显示根据自己需求设置
[_getCodeButsetTitle:@"获取验证码"forState:UIControlStateNormal];
[_getCodeButsetBackgroundImage:[UIImageimageNamed:@"smallButBG"]forState:UIControlStateNormal];
_getCodeBut.userInteractionEnabled=YES;
});
}else{
intseconds = timeout %60;
NSString*strTime = [NSStringstringWithFormat:@"%d", seconds];
dispatch_async(dispatch_get_main_queue(), ^{
//设置界面的按钮显示根据自己需求设置
[_getCodeButsetTitle:[NSStringstringWithFormat:@"%@秒",strTime]forState:UIControlStateNormal];
//[_getAuthCodeBtn setBackgroundImage:[UIImage imageNamed:@"cert_gray_but.png"] forState:UIControlStateNormal];
_getCodeBut.userInteractionEnabled=NO;
});
timeout--;
}
});
dispatch_resume(timer);
}
