本文主要闡述Objective-C如何通過runtime反射獲取方法并調(diào)用
屬性和變量的反射遍歷可以參考http://www.reibang.com/p/1a03524d6668
引入頭文件
#import <objc/runtime.h>
獲取類實(shí)例方法
Class currentClass=NSClassFromString(@"DlibClass");
do{
unsigned int methodCount;
Method *methodList = class_copyMethodList(currentClass, &methodCount);
unsigned int i = 0;
for (; i < methodCount; i++) {
SEL sel=method_getName(methodList[i]);
NSString *strClassName=[NSString stringWithCString:class_getName(currentClass) encoding:NSUTF8StringEncoding];
NSString *strMethodName=[NSString stringWithCString:sel_getName(sel) encoding:NSUTF8StringEncoding];
NSLog(@"class:%@ method:%@", strClassName,strMethodName);
}
free(methodList);
currentClass = class_getSuperclass(currentClass);
}while(currentClass);
獲取類方法（靜態(tài)方法）
Class currentClass=objc_getMetaClass("DlibClass");
do{
unsigned int methodCount;
Method *methodList = class_copyMethodList(currentClass, &methodCount);
unsigned int i = 0;
for (; i < methodCount; i++) {
SEL sel=method_getName(methodList[i]);
NSString *strClassName=[NSString stringWithCString:class_getName(currentClass) encoding:NSUTF8StringEncoding];
NSString *strMethodName=[NSString stringWithCString:sel_getName(sel) encoding:NSUTF8StringEncoding];
NSLog(@"class:%@ method:%@", strClassName,strMethodName);
}
free(methodList);
currentClass = class_getSuperclass(currentClass);
}while(currentClass);
反射創(chuàng)建類實(shí)例
Class Dcls=NSClassFromString(@"DlibClass");
id dobj=[[Dcls alloc] init];
反射創(chuàng)建無類實(shí)例(也叫類對象)
Class currentClass=objc_getMetaClass("DlibClass");
id dclsobj=[[currentClass alloc] init];
根據(jù)@selector調(diào)用相應(yīng)對象方法
IMP imp = [dobj methodForSelector:sel];
MyClass *(*func)(void) = (void *)imp;
MyClass *ret=func();
NSLog(@"%@",ret);
