runtime 获取类的所有属性，方法以及isa
2018-04-26 本文已影响13人
充满活力的早晨
获取类的所有属性
这里不讲解怎么使用，只是单纯的用代码解析了下类属性。方便以后查找方便
#import <Foundation/Foundation.h>
@interface ObjcPropertyParse : NSObject
- (instancetype)initWithClass:(Class)cls;
-(void)print;
@end
#import <Foundation/Foundation.h>
#import "Son.h"
struct personStruct{
int man ;
};
@interface Person : NSObject
@property (nonatomic,assign) struct personStruct structSon;
@property (nonatomic,strong) NSString *name;
@property (nonatomic,retain) NSString *name1;
@property (nonatomic,copy) NSString *name2;
@property (atomic,copy) NSString *name3;
@property (nonatomic,strong) NSString *name4;
@property (nonatomic,weak) NSString *name5;
@property (nonatomic,getter=isProxy) int mm;
@property (nonatomic,setter=isdd:) int mmd;
@property (nonatomic,strong) Son *son;
@property (nonatomic,strong) NSMutableArray *address;
-(void)addAddress:(NSString *)address;
@end
#import "Person.h"
#import <objc/runtime.h>
#import "ObjcClassMethodParse.h"
@implementation Person
@dynamic name4;
- (instancetype)init
{
self = [super init];
if (self) {
}
return self;
}
@end
#import <Foundation/Foundation.h>
@interface ObjcPropertyParse : NSObject
- (instancetype)initWithClass:(Class)cls;
-(void)print;
@end
#import "ObjcPropertyParse.h"
#import <objc/runtime.h>
@interface ObjcProperty: NSObject
@property (nonatomic,strong) NSString *property;
@property(nonatomic ,assign) bool isRetain;
@property(nonatomic ,assign) bool isCopy;
@property(nonatomic ,assign) bool isNonatomic;
@property(nonatomic ,assign) NSString * isGetter;
@property(nonatomic ,assign) NSString * isSetter;
@property(nonatomic ,assign) bool isdynamic;
@property(nonatomic ,assign) bool isWeak;
@property(nonatomic ,assign) bool isP;
@property(nonatomic ,assign) NSString * isT;
@property (nonatomic,strong) NSString *ivar;
@property (nonatomic ,strong)NSString * propertyName;
@end
@implementation ObjcProperty
@end
@interface ObjcPropertyParse()
@property (nonatomic,strong) Class cls;
@property (nonatomic,strong) NSMutableArray * propertyList;
@end
@implementation ObjcPropertyParse
- (instancetype)initWithClass:(Class)cls
{
self = [super init];
if (self) {
self.cls = cls;
self.propertyList = [NSMutableArray array];
[self parse];
}
return self;
}
//https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtPropertyIntrospection.html#//apple_ref/doc/uid/TP40008048-CH101-SW1
-(void)parse{
unsigned int count = 0;
objc_property_t *property_t = class_copyPropertyList(self.cls, &count);
for (int i=0; i<count; i++) {
objc_property_t propert = property_t[i];
const char * propertyName = property_getName(propert);
unsigned int attcount = 0;
objc_property_attribute_t *att = property_copyAttributeList(propert,&attcount);
ObjcProperty * objc=[[ObjcProperty alloc]init];
objc.propertyName = [NSString stringWithFormat:@"%s",propertyName];
for (int j =0; j<attcount; j++) {
objc_property_attribute_t t = att[j];
if (strcmp(t.name,"T")==0) {
objc.property = [NSString stringWithFormat:@"%s",t.value];
}
if (strcmp(t.name,"&")==0) {
objc.isRetain = YES;
}
if (strcmp(t.name,"&")==0) {
objc.isRetain = YES;
}
if (strcmp(t.name,"N")==0) {
objc.isNonatomic = YES;
}
if (strcmp(t.name,"D")==0) {
objc.isdynamic = YES;
}
if (strcmp(t.name,"G")==0) {
objc.isGetter = [NSString stringWithFormat:@"%s",t.value];
}
if (strcmp(t.name,"S")==0) {
objc.isSetter = [NSString stringWithFormat:@"%s",t.value];
}
if (strcmp(t.name,"W")==0) {
objc.isWeak = YES;
}
if (strcmp(t.name,"P")==0) {
objc.isP = YES;
}
if (strcmp(t.name,"t")==0) {
objc.isT = [NSString stringWithFormat:@"%s",t.value];;
}
if (strcmp(t.name,"V")==0) {
objc.ivar = [NSString stringWithFormat:@"%s",t.value];;
}
}
[self.propertyList addObject:objc];
}
free(property_t);
}
-(void)print{
for (ObjcProperty * objcProperty in self.propertyList) {
NSLog(@" propertyName=%@,property=%@,isCopy=%d,isRetain=%d,isNonatomic=%d,isGetter=%@,isSetting=%@,isDynamic=%d,isWeak=%d,isP=%d,isT=%@,Ivar=%@",objcProperty.propertyName,objcProperty.property,objcProperty.isCopy,objcProperty.isRetain,objcProperty.isNonatomic,objcProperty.isGetter,objcProperty.isSetter,objcProperty.isdynamic,objcProperty.isWeak,objcProperty.isWeak,objcProperty.isT,objcProperty.ivar);
}
}
@end
调用测试
ObjcPropertyParse * objcPropertyParse = [[ObjcPropertyParse alloc]initWithClass:[Person class]];
[objcPropertyParse print];
结果
2018-04-26 14:26:33.206827+0800 RuntimeParseClass[19146:1786992] propertyName=structSon,property={personStruct=i},isCopy=0,isRetain=0,isNonatomic=1,isGetter=(null),isSetting=(null),isDynamic=0,isWeak=0,isP=0,isT=(null),Ivar=_structSon
2018-04-26 14:26:33.206962+0800 RuntimeParseClass[19146:1786992] propertyName=name,property=@"NSString",isCopy=0,isRetain=1,isNonatomic=1,isGetter=(null),isSetting=(null),isDynamic=0,isWeak=0,isP=0,isT=(null),Ivar=_name
2018-04-26 14:26:33.207067+0800 RuntimeParseClass[19146:1786992] propertyName=name1,property=@"NSString",isCopy=0,isRetain=1,isNonatomic=1,isGetter=(null),isSetting=(null),isDynamic=0,isWeak=0,isP=0,isT=(null),Ivar=_name1
2018-04-26 14:26:33.207162+0800 RuntimeParseClass[19146:1786992] propertyName=name2,property=@"NSString",isCopy=0,isRetain=0,isNonatomic=1,isGetter=(null),isSetting=(null),isDynamic=0,isWeak=0,isP=0,isT=(null),Ivar=_name2
2018-04-26 14:26:33.207290+0800 RuntimeParseClass[19146:1786992] propertyName=name3,property=@"NSString",isCopy=0,isRetain=0,isNonatomic=0,isGetter=(null),isSetting=(null),isDynamic=0,isWeak=0,isP=0,isT=(null),Ivar=_name3
2018-04-26 14:26:33.207707+0800 RuntimeParseClass[19146:1786992] propertyName=name4,property=@"NSString",isCopy=0,isRetain=1,isNonatomic=1,isGetter=(null),isSetting=(null),isDynamic=1,isWeak=0,isP=0,isT=(null),Ivar=(null)
2018-04-26 14:26:33.207855+0800 RuntimeParseClass[19146:1786992] propertyName=name5,property=@"NSString",isCopy=0,isRetain=0,isNonatomic=1,isGetter=(null),isSetting=(null),isDynamic=0,isWeak=1,isP=1,isT=(null),Ivar=_name5
2018-04-26 14:26:33.208059+0800 RuntimeParseClass[19146:1786992] propertyName=mm,property=i,isCopy=0,isRetain=0,isNonatomic=1,isGetter=isProxy,isSetting=(null),isDynamic=0,isWeak=0,isP=0,isT=(null),Ivar=_mm
2018-04-26 14:26:33.208252+0800 RuntimeParseClass[19146:1786992] propertyName=mmd,property=i,isCopy=0,isRetain=0,isNonatomic=1,isGetter=(null),isSetting=isdd:,isDynamic=0,isWeak=0,isP=0,isT=(null),Ivar=_mmd
2018-04-26 14:26:33.208780+0800 RuntimeParseClass[19146:1786992] propertyName=son,property=@"Son",isCopy=0,isRetain=1,isNonatomic=1,isGetter=(null),isSetting=(null),isDynamic=0,isWeak=0,isP=0,isT=(null),Ivar=_son
2018-04-26 14:26:33.208912+0800 RuntimeParseClass[19146:1786992] propertyName=address,property=@"NSMutableArray",isCopy=0,isRetain=1,isNonatomic=1,isGetter=(null),isSetting=(null),isDynamic=0,isWeak=0,isP=0,isT=(null),Ivar=_address
这里主要是知道属性的编码规范，查看官方文档
image.png
方法类的所有方法
这里只获取下类，并且打印出类的所有方法和相关属性，不讨论IMP交换什么的
#import <Foundation/Foundation.h>
@interface ObjcClassMethodParse : NSObject
- (instancetype)initWithClass:(Class)cls;
-(void)print;
@end
#import "ObjcClassMethodParse.h"
#import <objc/runtime.h>
@interface ObjcClassMethod: NSObject
@property (nonatomic,strong) NSString *name;
@property (nonatomic,assign) IMP imp;
@property (nonatomic,strong) NSString *ypeEncoding;
@property (nonatomic,assign) int argumentCount;
@property (nonatomic,strong) NSString * cReturnType;
@property (nonatomic,strong) NSMutableArray *cArgumentTypes;
@property (nonatomic,strong) NSString * getReturnType;
@property (nonatomic,strong) NSMutableArray *gArgumentTypes;
@property (nonatomic,strong) NSString * descriptionName;
@property (nonatomic,strong) NSString * descriptionType;
@end
@implementation ObjcClassMethod
@end
@interface ObjcClassMethodParse()
@property (nonatomic,strong) Class cls;
@property (nonatomic,strong) NSMutableArray * methodListArr;
@end
@implementation ObjcClassMethodParse
- (instancetype)initWithClass:(Class)cls
{
self = [super init];
if (self) {
self.cls = cls;
self.methodListArr = [NSMutableArray array];
[self parse];
}
return self;
}
//https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtPropertyIntrospection.html#//apple_ref/doc/uid/TP40008048-CH101-SW1
-(void)parse{
unsigned int count = 0;
Method *methodList = class_copyMethodList(self.cls, &count);
for (int i=0; i<count; i++) {
Method method = methodList[i];
ObjcClassMethod * m=[[ObjcClassMethod alloc]init];
const char * name= sel_getName(method_getName(method));
m.name = [NSString stringWithFormat:@"%s",name];
IMP imp= method_getImplementation(method);
m.imp = imp;
const char *ypeEncoding = method_getTypeEncoding(method);
m.ypeEncoding = [NSString stringWithFormat:@"%s",ypeEncoding];
int count = method_getNumberOfArguments(method);
m.argumentCount = count;
const char *returnType = method_copyReturnType(method);
m.cReturnType = [NSString stringWithFormat:@"%s",returnType];
NSMutableArray * argumentstype= [NSMutableArray array];
for (int i=0; i<count; i++) {
char * argumentType= method_copyArgumentType(method, i);
[argumentstype addObject:[NSString stringWithFormat:@"%s",argumentType]];
}
m.cArgumentTypes =argumentstype;
char dst[1024]={0};
method_getReturnType(method,dst , 1024);
m.getReturnType =[NSString stringWithFormat:@"%s",dst];
NSMutableArray * gargumentstype= [NSMutableArray array];
for (int i=0; i<count; i++) {
char dst[1024]={0};
method_getArgumentType(method, i, dst, 1024);
[gargumentstype addObject:[NSString stringWithFormat:@"%s",dst]];
}
m.gArgumentTypes = gargumentstype;
struct objc_method_description * de= method_getDescription(method);
m.descriptionName = NSStringFromSelector(de->name);
m.descriptionType =[NSString stringWithFormat:@"%s", de->types];
[self.methodListArr addObject:m];
}
free(methodList);
}
-(void)print{
for (ObjcClassMethod *m in self.methodListArr) {
NSString * str = [NSString stringWithFormat:@"name=%@, imp=%p ,typeEncoding=%@ ,argumentCount=%d,cReturnType=%@,getReturnType=%@,descriptionName=%@,descriptionType=%@,cArgumentTypes=%@,gArgumentTypes=%@",m.name ,m.imp,m.ypeEncoding,m.argumentCount,m.cReturnType,m.getReturnType,m.descriptionType,m.descriptionType,[m.cArgumentTypes componentsJoinedByString:@"|"],[m.gArgumentTypes componentsJoinedByString:@"|"]];
NSLog(@"%@",str);
}
}
@end
测试代码
ObjcClassMethodParse * methodParse =[[ObjcClassMethodParse alloc]initWithClass:[Person class]];
[methodParse print];
测试结果
2018-04-26 15:06:20.660783+0800 RuntimeParseClass[29459:1870748] name=structSon, imp=0x10c811570 ,typeEncoding={personStruct=i}16@0:8 ,argumentCount=2,cReturnType={personStruct=i},getReturnType={personStruct=i},descriptionName={personStruct=i}16@0:8,descriptionType={personStruct=i}16@0:8,cArgumentTypes=@|:,gArgumentTypes=@|:
2018-04-26 15:06:20.661063+0800 RuntimeParseClass[29459:1870748] name=setStructSon:, imp=0x10c8115a0 ,typeEncoding=v20@0:8{personStruct=i}16 ,argumentCount=3,cReturnType=v,getReturnType=v,descriptionName=v20@0:8{personStruct=i}16,descriptionType=v20@0:8{personStruct=i}16,cArgumentTypes=@|:|{personStruct=i},gArgumentTypes=@|:|{personStruct=i}
2018-04-26 15:06:20.661199+0800 RuntimeParseClass[29459:1870748] name=name1, imp=0x10c811630 ,typeEncoding=@16@0:8 ,argumentCount=2,cReturnType=@,getReturnType=@,descriptionName=@16@0:8,descriptionType=@16@0:8,cArgumentTypes=@|:,gArgumentTypes=@|:
2018-04-26 15:06:20.661303+0800 RuntimeParseClass[29459:1870748] name=setName1:, imp=0x10c811650 ,typeEncoding=v24@0:8@16 ,argumentCount=3,cReturnType=v,getReturnType=v,descriptionName=v24@0:8@16,descriptionType=v24@0:8@16,cArgumentTypes=@|:|@,gArgumentTypes=@|:|@
2018-04-26 15:06:20.661413+0800 RuntimeParseClass[29459:1870748] name=name2, imp=0x10c811690 ,typeEncoding=@16@0:8 ,argumentCount=2,cReturnType=@,getReturnType=@,descriptionName=@16@0:8,descriptionType=@16@0:8,cArgumentTypes=@|:,gArgumentTypes=@|:
2018-04-26 15:06:20.831869+0800 RuntimeParseClass[29459:1870748] name=setName2:, imp=0x10c8116c0 ,typeEncoding=v24@0:8@16 ,argumentCount=3,cReturnType=v,getReturnType=v,descriptionName=v24@0:8@16,descriptionType=v24@0:8@16,cArgumentTypes=@|:|@,gArgumentTypes=@|:|@
2018-04-26 15:06:20.832085+0800 RuntimeParseClass[29459:1870748] name=name3, imp=0x10c811700 ,typeEncoding=@16@0:8 ,argumentCount=2,cReturnType=@,getReturnType=@,descriptionName=@16@0:8,descriptionType=@16@0:8,cArgumentTypes=@|:,gArgumentTypes=@|:
2018-04-26 15:06:20.832218+0800 RuntimeParseClass[29459:1870748] name=setName3:, imp=0x10c811730 ,typeEncoding=v24@0:8@16 ,argumentCount=3,cReturnType=v,getReturnType=v,descriptionName=v24@0:8@16,descriptionType=v24@0:8@16,cArgumentTypes=@|:|@,gArgumentTypes=@|:|@
2018-04-26 15:06:20.832337+0800 RuntimeParseClass[29459:1870748] name=name5, imp=0x10c811770 ,typeEncoding=@16@0:8 ,argumentCount=2,cReturnType=@,getReturnType=@,descriptionName=@16@0:8,descriptionType=@16@0:8,cArgumentTypes=@|:,gArgumentTypes=@|:
2018-04-26 15:06:20.864817+0800 RuntimeParseClass[29459:1870748] name=setName5:, imp=0x10c8117b0 ,typeEncoding=v24@0:8@16 ,argumentCount=3,cReturnType=v,getReturnType=v,descriptionName=v24@0:8@16,descriptionType=v24@0:8@16,cArgumentTypes=@|:|@,gArgumentTypes=@|:|@
2018-04-26 15:06:20.864973+0800 RuntimeParseClass[29459:1870748] name=setMm:, imp=0x10c811810 ,typeEncoding=v20@0:8i16 ,argumentCount=3,cReturnType=v,getReturnType=v,descriptionName=v20@0:8i16,descriptionType=v20@0:8i16,cArgumentTypes=@|:|i,gArgumentTypes=@|:|i
2018-04-26 15:06:20.865089+0800 RuntimeParseClass[29459:1870748] name=mmd, imp=0x10c811840 ,typeEncoding=i16@0:8 ,argumentCount=2,cReturnType=i,getReturnType=i,descriptionName=i16@0:8,descriptionType=i16@0:8,cArgumentTypes=@|:,gArgumentTypes=@|:
2018-04-26 15:06:20.865192+0800 RuntimeParseClass[29459:1870748] name=isdd:, imp=0x10c811860 ,typeEncoding=v20@0:8i16 ,argumentCount=3,cReturnType=v,getReturnType=v,descriptionName=v20@0:8i16,descriptionType=v20@0:8i16,cArgumentTypes=@|:|i,gArgumentTypes=@|:|i
2018-04-26 15:06:20.865310+0800 RuntimeParseClass[29459:1870748] name=son, imp=0x10c811890 ,typeEncoding=@16@0:8 ,argumentCount=2,cReturnType=@,getReturnType=@,descriptionName=@16@0:8,descriptionType=@16@0:8,cArgumentTypes=@|:,gArgumentTypes=@|:
2018-04-26 15:06:20.865424+0800 RuntimeParseClass[29459:1870748] name=setSon:, imp=0x10c8118b0 ,typeEncoding=v24@0:8@16 ,argumentCount=3,cReturnType=v,getReturnType=v,descriptionName=v24@0:8@16,descriptionType=v24@0:8@16,cArgumentTypes=@|:|@,gArgumentTypes=@|:|@
2018-04-26 15:06:20.865528+0800 RuntimeParseClass[29459:1870748] name=address, imp=0x10c8118f0 ,typeEncoding=@16@0:8 ,argumentCount=2,cReturnType=@,getReturnType=@,descriptionName=@16@0:8,descriptionType=@16@0:8,cArgumentTypes=@|:,gArgumentTypes=@|:
2018-04-26 15:06:20.865708+0800 RuntimeParseClass[29459:1870748] name=.cxx_destruct, imp=0x10c811950 ,typeEncoding=v16@0:8 ,argumentCount=2,cReturnType=v,getReturnType=v,descriptionName=v16@0:8,descriptionType=v16@0:8,cArgumentTypes=@|:,gArgumentTypes=@|:
2018-04-26 15:06:20.865884+0800 RuntimeParseClass[29459:1870748] name=name, imp=0x10c8115d0 ,typeEncoding=@16@0:8 ,argumentCount=2,cReturnType=@,getReturnType=@,descriptionName=@16@0:8,descriptionType=@16@0:8,cArgumentTypes=@|:,gArgumentTypes=@|:
2018-04-26 15:06:20.866053+0800 RuntimeParseClass[29459:1870748] name=setName:, imp=0x10c8115f0 ,typeEncoding=v24@0:8@16 ,argumentCount=3,cReturnType=v,getReturnType=v,descriptionName=v24@0:8@16,descriptionType=v24@0:8@16,cArgumentTypes=@|:|@,gArgumentTypes=@|:|@
2018-04-26 15:06:20.866225+0800 RuntimeParseClass[29459:1870748] name=init, imp=0x10c8114e0 ,typeEncoding=@16@0:8 ,argumentCount=2,cReturnType=@,getReturnType=@,descriptionName=@16@0:8,descriptionType=@16@0:8,cArgumentTypes=@|:,gArgumentTypes=@|:
2018-04-26 15:06:20.866461+0800 RuntimeParseClass[29459:1870748] name=isProxy, imp=0x10c8117f0 ,typeEncoding=i16@0:8 ,argumentCount=2,cReturnType=i,getReturnType=i,descriptionName=i16@0:8,descriptionType=i16@0:8,cArgumentTypes=@|:,gArgumentTypes=@|:
2018-04-26 15:06:20.866655+0800 RuntimeParseClass[29459:1870748] name=setAddress:, imp=0x10c811910 ,typeEncoding=v24@0:8@16 ,argumentCount=3,cReturnType=v,getReturnType=v,descriptionName=v24@0:8@16,descriptionType=v24@0:8@16,cArgumentTypes=@|:|@,gArgumentTypes=@|:|@
