获取某个类的成员变量；
unsigned int numIvars; //成员变量个数
Ivar *vars = class_copyIvarList([UISearchBar 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);
获取成员函数
Method *meth = class_copyMethodList(NSClassFromString(@"UIView"), &numIvars);
for(int i = 0; i < numIvars; i++) {
Method thisIvar = meth[i];
SEL sel = method_getName(thisIvar);
const char *name = sel_getName(sel);
NSLog(@"zp method :%s", name);
}
free(meth);
