iOS动态更换应用icon

首先需要注意的是，动态更换图标需要在iOS10.3之后才可以使用

第一步、需要在info.plist中配置图标的一些信息，具体如下

根据自己的需求修改图标样式

如下为info.plist中的配置，拿走不谢
<key>CFBundleIcons</key> <dict> <key>CFBundleAlternateIcons</key> <dict> <key>10.1</key> <dict> <key>UIPrerenderedIcon</key> <false/> <key>CFBundleIconFiles</key> <array> <string>Icon-29</string> <string>Icon-60</string> <string>Icon-Spotlight-40</string> <string>icon-1024</string> </array> </dict> <key>7.1</key> <dict> <key>UIPrerenderedIcon</key> <false/> <key>CFBundleIconFiles</key> <array> <string></string> </array> </dict> </dict> <key>CFBundlePrimaryIcon</key> <dict> <key>CFBundleIconName</key> <string></string> <key>CFBundleIconFiles</key> <array> <string></string> </array> <key>UIPrerenderedIcon</key> <false/> </dict> <key>UINewsstandIcon</key> <dict> <key>CFBundleIconFiles</key> <array> <string></string> </array> <key>UINewsstandBindingType</key> <string>UINewsstandBindingTypeMagazine</string> <key>UINewsstandBindingEdge</key> <string>UINewsstandBindingEdgeLeft</string> </dict> </dict>

第二步、需要执行代码去进行更换图标的操作，这种情况下会有弹框提示更换，点击确定会进行更换图标操作

- (void)setAppIconWithName:(NSString*)iconName {

    if(@available(iOS10.3, *)) {

        if (![[UIApplication sharedApplication] supportsAlternateIcons]) {

            return;

        }

    }else{

        // Fallback on earlier versions

    }

    if([iconNameisEqualToString:@""]) {

        iconName =nil;

    }

    if(@available(iOS10.3, *)) {

        [[UIApplication sharedApplication] setAlternateIconName:iconName completionHandler:^(NSError * _Nullable error) {

            if(error) {

                NSLog(@"更换app图标发生错误了 ： %@",error);

            }

        }];

    }else{

        // Fallback on earlier versions

    }

}

第三步、优化弹框，在用户无感知的情况下进行图标切换，需要通过runtime来处理此操作，写一个UIViewController扩展类，具体处理如下

+ (void)load{

    staticdispatch_once_tonceToken;

    dispatch_once(&onceToken, ^{

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

        MethodpresentSwizzlingM =class_getInstanceMethod(self.class,@selector(dy_presentViewController:animated:completion:));

        method_exchangeImplementations(presentM, presentSwizzlingM);

    });

}

- (void)dy_presentViewController:(UIViewController*)viewControllerToPresentanimated:(BOOL)flagcompletion:(void(^)(void))completion {

    if([viewControllerToPresentisKindOfClass:[UIAlertControllerclass]]) {

        UIAlertController*alertController = (UIAlertController*)viewControllerToPresent;

        if(alertController.title==nil&& alertController.message==nil) {

            return;

        }else{

            [selfdy_presentViewController:viewControllerToPresentanimated:flagcompletion:completion];

            return;

        }

    }

    [selfdy_presentViewController:viewControllerToPresentanimated:flagcompletion:completion];

}

到这里完整的更换图标就可以了，亲测可用