alert for NSUrl either not supported or nothing, image can't be got and sent

[s1u]

Two issues as below happen to me.

Issue 1
Having activityItems like this NSArray * activityItems = @[sharedText, sharedImage, sharedUrl];
But sharedImage and sharedUrl failed to be sent. Only sharedText.

Issue 2
If like this NSArray * activityItems = @[sharedImage, sharedText , sharedUrl];
will alert for "Not support NSUrl"

If other sequence of these three items, Issue 1 will happen, which means only text could be sent, while image and url not embedded.