将图像从 iPhone 传递到 Apple Watch 无效

Question

大多数关于传递图像的教程都讨论现有图像。我试图在运行时在 iPhone 上生成图像并传递给 Apple Watch。

我使用的是 MMWormhole 中引用的但这并没有让我的图像通过。

我现在尝试在 WKInterfaceController 上直接使用 + openParentApplication。我得到一个错误：

Property list invalid for format: 200 (property lists cannot contain NULL)

我查了一下，发现 UIImage 无法序列化。所以现在我尝试转换 UIImage > NSData > NSString 并发送

- (void)awakeWithContext:(id)context {
    [super awakeWithContext:context];
    self.timer = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(loop) userInfo:nil repeats:true];
};


- (void)loop {
    [WKInterfaceController openParentApplication:nil reply:^(NSDictionary *replyInfo, NSError *error) {
        NSData *m = replyInfo[@"image"];
        UIImage *img = [UIImage imageWithData:m];
        [self.image setImage:img];
    }];
//    [self.wormhole passMessageObject:@"hello" identifier:@"hello"];
}



AppDelegate
    - (void)application:(UIApplication *)application handleWatchKitExtensionRequest:(NSDictionary *)userInfo reply:(void (^)(NSDictionary *))reply {
        UIImage *image = [UIImage imageNamed:@"cat.png"];
        NSData *data = UIImagePNGRepresentation(image);
        NSDictionary *d = @{@"image" : data};
        reply(d);
    }

Answer 1

您需要在两端指定app group id。喜欢：

MMWormhole *wormhole = [[MMWormhole alloc] initWithApplicationGroupIdentifier:appGroupId optionalDirectory:kWormholeDirectory];

将图像从 iPhone 传递到 Apple Watch 无效

Passing an image from iPhone to Apple Watch not working

iphone

objective-c

ios

apple-watch