借助以下两个属性实现多级树形目录
@property(nonatomic) NSInteger indentationLevel; // adjust content indent. default is 0
@property(nonatomic) CGFloat indentationWidth; // width for each level. default is 10.0
Code4App编译测试,测试环境:Xcode 4.3, iOS 5.0。
转载:http://www.adobex.com/ios/source/details/00000032.htm