小编ada*_*ali的帖子

  {
    "id": "11882030_4952296803730", 
    "from": {
      "name": "xxx", 
      "id": "11882030"
    }, 
    "message": "test", 
    "picture": "https://fbcdn-photos-a.akamaihd.net/hphotos-ak-ash4/408410_4952294483672_298434229_s.jpg", 
    "link": "https://www.facebook.com/photo.php?fbid=4952294483672&set=pcb.4952296803730&type=1&relevant_count=2", 
    "icon": "https://fbstatic-a.akamaihd.net/rsrc.php/v2/yx/r/og8V99JVf8G.gif", 
    "actions": [
      {
        "name": "Comment", 
        "link": "https://www.facebook.com/11882030/posts/4952296803730"
      }, 
      {
        "name": "Like", 
        "link": "https://www.facebook.com/11882030/posts/4952296803730"
      }
    ], 
    "privacy": {
      "description": "Friends", 
      "value": "ALL_FRIENDS", 
      "friends": "", 
      "networks": "", 
      "allow": "", 
      "deny": ""
    }, 
    "place": {
      "id": "471607792876974", 
      "name": "TTT", 
      "location": {
        "street": "", 
        "zip": "", 
        "latitude": x, 
        "longitude": x
      }
    }, 
    "type": "photo", 
    "status_type": "mobile_status_update", 
    "object_id": "4952294483672",
    "application": {
      "name": "Facebook for iPhone", 
      "namespace": "fbiphone", …

[UIView animateWithDuration:30.0f delay:0.0f options:UIViewAnimationOptionCurveEaseInOut animations:^{
    v.contentMode = UIViewContentModeScaleAspectFit;
    v.frame = v.superview.bounds;
} completion:^(BOOL finished) {
    [v removeFromSuperview];
}];

我想要一个UIImageView调整大小并更改contentMode,但上面的代码不起作用.它在动画开始时立即更改了contentMode.

有什么方法可以动画吗？