React Native iOS推送报No known class method for selector错误

问题原因 #

No known class method for selector 'didReceiveNotificationResponse:'报错是因为你调用RNCPushNotificationIOS的didReceiveNotificationResponse方法时参数不匹配，你当前使用的版本要求该方法传入两个参数，你仅传入了response一个参数，编译器找不到对应签名的类方法。

修复方案 #

1. 修改回调方法实现 #

把AppDelegate.m中对应的didReceiveNotificationResponse方法替换为以下代码：

- (void)userNotificationCenter:(UNUserNotificationCenter *)center
    didReceiveNotificationResponse:(UNNotificationResponse *)response
             withCompletionHandler:(void (^)(void))completionHandler {
  [RNCPushNotificationIOS didReceiveNotificationResponse:response
                                  withCompletionHandler:completionHandler];
}

不需要单独调用completionHandler()，直接将回调透传给RNCPushNotificationIOS即可。

2. 补充协议声明（可选检查） #

检查AppDelegate.h文件中是否已经遵循UNUserNotificationCenterDelegate协议，正确的头文件声明参考：

#import <React/RCTBridgeDelegate.h>
#import <UIKit/UIKit.h>
#import <UserNotifications/UserNotifications.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate, RCTBridgeDelegate, UNUserNotificationCenterDelegate>

@property (nonatomic, strong) UIWindow *window;

@end

3. 验证依赖安装 #

执行以下命令重新安装iOS依赖，确保依赖版本匹配：
cd ios && pod deintegrate && pod install && cd ..

内容的提问来源于stack exchange，提问作者Joseph Vasse