//啟動(dòng)計(jì)時(shí)器

?double?delayInSeconds =?10.0;

?dispatch_time_t?popTime =?dispatch_time(DISPATCH_TIME_NOW, delayInSeconds *NSEC_PER_SEC);

?dispatch_after(popTime,?dispatch_get_main_queue(), ^(void){

?//執(zhí)行事件

?NSLog(@"計(jì)時(shí)器結(jié)束了");

?UIAlertController?*alertVC = [UIAlertController?alertControllerWithTitle:@"購(gòu)買學(xué)習(xí)卡"?message:nil?preferredStyle:UIAlertControllerStyleAlert];

?UIAlertAction?*falseA = [UIAlertAction?actionWithTitle:@"取消"style:UIAlertActionStyleDefault?handler:^(UIAlertAction?*?_Nonnull?action) {

?NSLog(@"點(diǎn)擊取消");

? ? ? ? ? ? [self.navigationController?popViewControllerAnimated:YES];

? ? ? ? }];

?UIAlertAction?*trueA = [UIAlertAction?actionWithTitle:@"確定"style:UIAlertActionStyleDefault?handler:^(UIAlertAction?*?_Nonnull?action) {

? ? ? ? ? ? [SVProgressHUD?showWithStatus:@"跳轉(zhuǎn)你需要的界面"];

? ? ? ? ? ? [SVProgressHUD?dismissWithDelay:3];

? ? ? ? }];

[alertVC?addAction:falseA];

[alertVC?addAction:trueA];

? ? ? ? [self?presentViewController:alertVC?animated:YES?completion:nil];

? ? });