iOS无感知修改应用Logo

马上6.18,有没有发现京东淘宝的logo都在不经意间就替换成618主题的了呢,接下来我们来一步步仿照,实现logo无感知修改功能吧

1.进入项目的Assets.xcassets,点击加号添加需要替换的备用logo,好在更新了Xcode14,仅需一张1024尺寸的他就能生成其余对应的图标(不得不说省事多了😂),接下来可以给你的图标取名(命名随意,主要是区分开)

2.进入项目的TARGEST 选择Bundle Settings 搜索 Include All App Icon Assets 将bool值改成YES

目前iOS15以上系统测试替换LOGO没问题,iOS15以下小伙伴可以试试,如果不行可以给我留言

现在实现[[UIApplication sharedApplication]setAlternateIconName:imageStr completionHandler:nil];即可实现替换Logo,但是替换完成后系统会有一个弹窗提示,因为我们要做到无感知,接下来则需要利用runtime来把presentViewController方法替换,demo如下:

先创建一个分类

.h demo如下

#import

NS_ASSUME_NONNULL_BEGIN

@interfaceUIApplication(JSIconChange)

- (void)updateAppIconWithName:(NSString *)name;

@end

NS_ASSUME_NONNULL_END

.m文件如下

#import "UIApplication+JSIconChange.h"

#import

@interfaceUIViewController(JSIconChange)

@end

@implementationUIViewController(JSIconChange)

+ (void)load{

    staticdispatch_once_tonceToken;

    dispatch_once(&onceToken, ^{

        MethodoriginMethod =class_getInstanceMethod(self.class,@selector(presentViewController:animated:completion:));

        MethodswizzMethod =class_getInstanceMethod(self.class,@selector(js_presentViewController:animated:completion:));

        method_exchangeImplementations(originMethod, swizzMethod);

    });

}

- (void)js_presentViewController:(UIViewController *)viewController

                        animated:(BOOL)animated

                      completion:(void(^)(void))completion {

    if([viewControllerisKindOfClass:[UIAlertControllerclass]]) {

        UIAlertController*alertController = (UIAlertController*)viewController;

        if(alertController.actions.count==1&&

            alertController.childViewControllers.count==1) {

            NSString*actionTitle = [alertController.actionsfirstObject].title;

            NSString*message = [[alertController.childViewControllersfirstObject]valueForKeyPath:@"_messageLabel.text"];

            if([actionTitleisEqualToString:@"好"] &&

                [messagecontainsString:@"的图标"] &&

                [messagecontainsString:@"您已更改"]) {

                return;

            }

            if([actionTitleisEqualToString:@"OK"] &&

                [messagecontainsString:@"You have changed the icon for"]) {

                return;

            }

        }

    }

    [selfjs_presentViewController:viewControlleranimated:animatedcompletion:completion];

}

@end

@implementationUIApplication(JSIconChange)

- (void)updateAppIconWithName:(NSString *)name {

    NSString *version = [[UIDevice currentDevice] systemVersion];

    if ([version compare:@"10.3" options:NSNumericSearch] == NSOrderedAscending) {

        return;

    }

    if (![self supportsAlternateIcons]) {

        return;

    }

    if([nameisEqualToString:@""]) {

        name =nil;

    }

    if ([[self alternateIconName] isEqualToString:name]) {

        return;

    }

    if(![selfalternateIconName] && !name) {

        return;

    }

    [self setAlternateIconName:name completionHandler:^(NSError * _Nullable error) {

        if(error) {

            NSLog(@"AppLogo替换失败%@",error);

        }

    }];

}

@end

3.接下来是实现部分

引入头文件 

#import "UIApplication+JSIconChange.h"

调用方法

    [[UIApplication sharedApplication]updateAppIconWithName:@"你需要替换的LOGO名称"];

接下来就可以实现该功能了,小伙伴们快去尝试吧!