ios11之后弹出弹框AlertView之后，点击页面空白处，弹框不消失问题，原因是UIAlertController在iOS11之后底层视图继承关系有了新的变换，详情请看官方文档。
解决方案就是自定义AlertController，添加点击手势。
1.自定义UIAlertController
.h代码
#import
@interfaceBaseAlertController :UIAlertController
@end
.m代码
#import "BaseAlertController.h"
@interface BaseAlertController ()
@property (nonatomic,strong) UITapGestureRecognizer *closeGesture;
@end
@implementationBaseAlertController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.closeGesture= [[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(closeAlert:)];
}
- (void)viewDidAppear:(BOOL)animated {
[superviewDidAppear:animated];
UIView*superView =self.view.superview;
if(![superView.gestureRecognizerscontainsObject:self.closeGesture]) {
[superView.subviews[0]addGestureRecognizer:self.closeGesture];
superView.subviews[0].userInteractionEnabled = YES;
}
}
- (void)closeAlert:(UITapGestureRecognizer*) gesture{
[self dismissViewControllerAnimated:YES completion:nil];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
2.使用方法 （和原生方法一样调用即可）
BaseAlertController*alertController = [BaseAlertControlleralertControllerWithTitle:@"确认手机号码"message:[NSStringstringWithFormat:@"我们将发送验证码短信到这个号码：+86%@",self.phoneTextField.text] preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {
}];
[cancelActionsetValue:[UIColor colorWithHexString:@"#999999"] forKey:@"titleTextColor"];
[alertControlleraddAction:cancelAction];
UIAlertAction *sureAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {
[self sendSmsCodeRequest];
}];
[sureActionsetValue:[UIColor colorWithHexString:@"#E7380C"] forKey:@"titleTextColor"];
[alertControlleraddAction:sureAction];
// 由于它是一个控制器 直接modal出来就好了
[self presentViewController:alertController animated:YES completion:nil];