第三方键盘跳转宿主app

1：为主app设置Url Scheme 参考 http://blog.youkuaiyun.com/tianbing878/article/details/75642657

2：将下边代码中的testApp://改为你宿主app的Url Scheme即可

UIResponder *responder = self;

    while (responder) {

        if ([responder isKindOfClass:[UIApplication class]]) {

            NSLog(@"yes:%@", responder);

            break;

        }

        responder = [responder nextResponder];

        NSLog(@"responder:%@", responder);

    }

    NSString* toUtf8= [@"testApp://" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

    

    NSURL* url = [NSURL URLWithString:toUtf8];

    

    [responder performSelector:@selector(openURL:) withObject:url];

    //    [(UIApplication *)responder canOpenURL:url];

    NSLog(@"--------%@",url);

    [[self extensionContext] openURL:url completionHandler:^(BOOL success) {

        NSLog(@"Success? %i", success);

    }];