[转载]UIView的层次结构--code

转载自：http://blog.csdn.net/theonezh/article/details/8216584

 

// Recursively travel down the view tree, increasing the indentation level for children

- (void )dumpView:(UIView  *)aView atIndent:(int )indent into:(NSMutableString  *)outstring

{

for  (int  i = 0 ; i < indent; i++) [outstring appendString :@"--" ];

[outstring appendFormat :@"[%2d] %@\n" , indent, [[aView class ] description ]];

for  (UIView  *view in  [aView subviews ])

        [self  dumpView :view atIndent :indent + 1  into :outstring];

}

 

// Start the tree recursion at level 0 with the root view

- (NSString  *) displayViews: (UIView  *) aView

{

NSMutableString *outstring = [[ NSMutableString  alloc ]  init ];

[self  dumpView : self .window  atIndent :0  into :outstring];

return  [outstring autorelease ];

}

// Show the tree

- (void )logViewTreeForMainWindow

{

     // CFShow([self displayViews: self.window]);

     ATLogInfo ( @"The view tree:\n%@", [ self   displayViews : self . window ]);

}

具体用法就是在你想知道你的view的层次的时候，调用一下这个logViewTreeForMainWindow函数就可以了。

比方说：下面这个就是我的打印结果。非常清晰明了！

 

[ 0] UIWindow

--[ 1] UILayoutContainerView

----[ 2] UINavigationTransitionView

------[ 3] UIViewControllerWrapperView

--------[ 4] UIView                   -----rootViewController

----------[ 5] UITableView

------------[ 6] ServerViewCell_iphone

--------------[ 7] UITableViewCellContentView

------------[ 6] ServerViewCell_iphone

--------------[ 7] UITableViewCellContentView

----[ 2] UINavigationBar

------[ 3] UINavigationBarBackground

------[ 3] UILabel

------[ 3] UIButton

--------[ 4] UIImageView

--------[ 4] UIImageView

--[ 1] UIView                   ----backView

--[ 1] UITransitionView

----[ 2] UIView                ----CameraPlayerView.

------[ 3] UIView              for zoom.--frameView.

--------[ 4] UIImageView

------[ 3] UIImageView

------[ 3] UILabel

--------[ 4] UIImageView

------[ 3] UIImageView

------[ 3] UINavigationBar

--------[ 4] UINavigationBarBackground

--------[ 4] UINavigationItemView

----[ 2] UILayoutContainerView

------[ 3] UINavigationTransitionView    -----recordVideoView

--------[ 4] UIViewControllerWrapperView

----------[ 5] UIView

------------[ 6] UITableView

--------------[ 7] UIImageView

--------------[ 7] UIImageView

------------[ 6] UIToolbar

--------------[ 7] _UIToolbarBackground

--------------[ 7] UISegmentedControl

------[ 3] UINavigationBar

--------[ 4] UINavigationBarBackground

--------[ 4] UILabel

--------[ 4] UIButton

----------[ 5] UIImageView

----------[ 5] UIButtonLabel