试图将值附加到字典

Question

尝试将值附加到字典

private static SyncAdapter sSyncAdapter = null;
private static final Object sSyncAdapterLock = new Object();

    @Override
    public void onCreate() {
        synchronized (sSyncAdapterLock) {
            if (sSyncAdapter == null) {
                sSyncAdapter = new SyncAdapter(getApplicationContext(), true);
            }
        }
    }

我对成员＆＃39;下标＆＃39;在public typealias Parameters = [String: Any] var parameters: Parameters = [ "username" : username, "first_name" : firstName, "last_name" : lastName, "profession" : profession ] if let imageURl = imageUrl { parameters[4] = ["image_url" : imageUrl] } 行

我该如何解决这个问题？

Answer 1

您应该通过parameters密钥访问String字典，即"image_url"，而不是其索引4：

if let imageURl = imageUrl {
    parameters["image_url"] = imageUrl
}