批量解决iOS13PresentViewController视图

以下为iOS13新引入的模式，为默认模式

    UIModalPresentationAutomatic API_AVAILABLE(ios(13.0)) = -2,

以往默认模式为

    UIModalPresentationFullScreen = 0,

如若此模式影响到你的界面可用以下方式解决批量此问题
用runtime修改系统方法 presentViewController:animated:completion:

+(void)load{
    if (@available(iOS 13.0, *)) {
        static dispatch_once_t onceToken;
        dispatch_once(&onceToken, ^{
            Class class = [self class];
            SEL originalSelector=@selector(presentViewController:animated:completion:);
            SEL swizzledSelector=@selector(my_presentViewController:animated:completion:);
            Method originalMethod=class_getInstanceMethod(class,originalSelector);
            Method swizzledMethod=class_getInstanceMethod(class,swizzledSelector);
            BOOL didAddMethod = class_addMethod(class,
                            originalSelector,
                            method_getImplementation(swizzledMethod),
                            method_getTypeEncoding(swizzledMethod));
            if(didAddMethod){
                class_replaceMethod(class,
                                    swizzledSelector,
                                    method_getImplementation(originalMethod),
                                    method_getTypeEncoding(originalMethod));
            }else{
                method_exchangeImplementations(originalMethod,swizzledMethod);
            }
        });
    }
}
-(void)my_presentViewController:(UIViewController *)viewControllerToPresent animated: (BOOL)flag completion:(void (^ __nullable)(void))completion{
    viewControllerToPresent.modalPresentationStyle = UIModalPresentationFullScreen;
    [self my_presentViewController:viewControllerToPresent animated:YES completion:nil];

}

不用到处去为viewcontroller添加modalPresentationStyle = UIModalPresentationFullScreen，如果你的viewcontroller是继承某个基类，也可直接在父类里init的时候添加modalPresentationStyle = UIModalPresentationFullScreen