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UIView and Subviews Exploded

/ Published in: Objective C
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This is adapted from Erica Sadun's explode code in her book "iPhone Developer's Cookbook".
It takes any UIView-based element and exposes all of the subviews and their subviews, etc.
Its a good way to dig into UIKit elements as well as debug your own UIView-based code.
In code, always set level to zero.

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  1. #define objectString(anObject) [[anObject description] UTF8String]
  2.  
  3. #import <Foundation/Foundation.h>
  4. @interface Util : NSObject {}
  5. + (void)explode:(id)viewObj level:(int)level;
  6. @end
  7.  
  8. @implementation Util
  9. + (void)explode:(id)viewObj level:(int)level
  10. {
  11. 	//	indent to show the current level
  12. 	for (int i = 0; i < level; i++) {
  13. 		printf("-", level);
  14. 	}
  15.  
  16. 	//	show the class and superclass for the current object
  17. 	printf("%s : ", objectString([viewObj class]));
  18. 	id obj = [viewObj superclass];
  19.  
  20. 	while (NULL != obj) {
  21. 		printf("%s : ", objectString([obj class]));
  22. 		obj = [obj superclass];
  23. 	}
  24.  
  25. 	printf("\n");
  26.  
  27. 	//	recurse for all subviews
  28. 	for (UIView *sub in [viewObj subviews]) {
  29. 		[Util explode:sub level:(level + 1)];
  30. 	}
  31. }
  32. @end

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