//启动计时器
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){
//执行事件
NSLog(@"计时器结束了");
UIAlertController *alertVC = [UIAlertController alertControllerWithTitle:@"购买学习卡" message:nil preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *falseA = [UIAlertAction actionWithTitle:@"取消"style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"点击取消");
[self.navigationController popViewControllerAnimated:YES];
}];
UIAlertAction *trueA = [UIAlertAction actionWithTitle:@"确定"style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[SVProgressHUD showWithStatus:@"跳转你需要的界面"];
[SVProgressHUD dismissWithDelay:3];
}];
[alertVC addAction:falseA];
[alertVC addAction:trueA];
[self presentViewController:alertVC animated:YES completion:nil];
});
