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runtime 获取类的所有属性，方法以及isa

runtime 获取类的所有属性，方法以及isa

作者: 充满活力的早晨 | 来源:发表于2018-04-26 18:28 被阅读13次

    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=@|:|@

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