iOS7之后全局移除UIAlertView(app退到后台)

@interface HZSAlertView : UIAlertView

-(instancetype)initWithTitle:(NSString *)title message:(NSString *)message delegate:(id)delegate cancelButtonTitle:(NSString *)cancelButtonTitle otherButtonTitles:(NSString *)otherButtonTitles, ...;

-(instancetype)initWithTitle:(NSString *)title message:(NSString *)message delegate:(id)delegate cancelButtonTitle:(NSString *)cancelButtonTitle otherTitles:(NSArray *)otherButtonTitles;

@end 
 

-(instancetype)initWithTitle:(NSString *)title message:(NSString *)message delegate:(id)delegate cancelButtonTitle:(NSString *)cancelButtonTitle otherTitles:(NSArray *)otherButtonTitles

{

    if (self = [super initWithTitle:title message:message delegate:delegate cancelButtonTitle:cancelButtonTitle otherButtonTitles:[otherButtonTitles firstObject], nil]) {

        for (int i=1; i<[otherButtonTitles count]; i++) {

            [self addButtonWithTitle:[otherButtonTitles objectAtIndex:i]];

        }

        if ([[NSUserDefaultsstandardUserDefaults]objectForKey:@"gestureCode"]) {

            //本地有手势密码

            [[NSNotificationCenter defaultCenter]addObserver:selfselector:@selector(willInterForeground) name:UIApplicationWillResignActiveNotification object:nil];

        }

    }

    return self;

}

-(instancetype)initWithTitle:(NSString *)title message:(NSString *)message delegate:(id)delegate cancelButtonTitle:(NSString *)cancelButtonTitle otherButtonTitles:(NSString *)otherButtonTitles, ...

{

    if (self = [super initWithTitle:title message:message delegate:delegate cancelButtonTitle:cancelButtonTitle otherButtonTitles:otherButtonTitles, nil]) {

        if ([[NSUserDefaultsstandardUserDefaults]objectForKey:@"gestureCode"]) {

            //本地有手势密码

            [[NSNotificationCenter defaultCenter]addObserver:selfselector:@selector(willInterForeground) name:UIApplicationWillResignActiveNotification object:nil];

        }

    }

    return self;

}

-(void)willInterForeground

{

    if (self) {

        [self dismissWithClickedButtonIndex:0 animated:NO];

    }

}

-(void)dealloc{

    NSLog(@"移除观察者");

    [[NSNotificationCenter defaultCenter] removeObserver:self];

}

    HZSAlertView *alertview = [[HZSAlertView alloc]initWithTitle:nilmessage:@"修改成功" delegate:nil cancelButtonTitle:@"确定"otherButtonTitles:nil];

    HZSAlertView *alertview = [[HZSAlertView alloc]initWithTitle:nilmessage:@"请选择手机号的运营商" delegate:self cancelButtonTitle:@"取消"otherTitles:@[@"联通",@"电信",@"移动"]];

    alertview.tag=444444;