iOS 查询一个类的所有成员变量和私有函数

iOS运行时获取对象的成员变量和成员方法

1. 首先导入runtime 头文件 #import<objc/runtime.h>

2.获取某个类的成员变量或则属性

 unsigned int numIvars;//成员变量个数

 Ivar *vars = class_copyIvarList(NSClassFromString(@"UIView"), &numIvars);

//Ivar *vars = class_copyIvarList([UIView class], &numIvars);

 NSString*key = nil;

 for(int i =0; i < numIvars; i++) {

   Ivar thisIvar = vars[i];

   key = [NSString stringWithUTF8String:ivar_getName(thisIvar)];//获取成员变量的名字

   NSLog(@"variable name :%@", key);

   key = [NSString stringWithUTF8String:ivar_getTypeEncoding(thisIvar)];//获取成员变量的数据类型

   NSLog(@"variable type :%@", key);
 }
 free(vars);

3.获取成员函数

Method*meth =class_copyMethodList(NSClassFromString(@"UIView"), &numIvars);

//Method *meth = class_copyMethodList([UIView class], &numIvars);

   for(int i =0; i < numIvars; i++) {

     Method thisIvar = meth[i];

     SEL sel =method_getName(thisIvar);

     const char *name =sel_getName(self);

     NSLog(@"zp method :%s", name);

   }

   free(meth);