#import"NSObject+Extansion.h"
#import
#import"news.h"
@implementationNSObject (extansion)
+(instancetype)objcWithDict:(NSDictionary*)dict{
news* model = [[selfalloc]init];
//把模型所有属性包装成数组
NSArray* array = [selfloadModleArray];
for(NSString* strinarray) {
if(dict[str]!=nil) {
[modelsetValue:dict[str]forKeyPath:str];
}
}
returnmodel;
}
-(NSString*)description{
//把模型所有属性包装成数组
NSArray* array =[[selfclass]loadModleArray];
//模型转字典
NSDictionary* dict = [selfdictionaryWithValuesForKeys:array];
return[NSStringstringWithFormat:@"<%@:%p> %@",self.class,self,dict];
}
constchar* key ;
+(NSArray* )loadModleArray{
//获取关联对像
/*
参数1:就是本类==self;
参数2:void *就是任意的意思,可以用const charkey或const char * key ;
*/
NSArray* pry =objc_getAssociatedObject(self,key);
//pry有值时,后面的代码不再执行,可以提高效率
if(pry!=nil) {
returnpry;
}
////参数1:类
////参数2:属性指针计数
////取成员变量列表,swift用这个方法容易崩溃iu
//class_copyIvarList(__unsafe_unretained Class cls, unsigned int *outCount);
//
////取方法列表
//class_copyMethodList(__unsafe_unretained Class cls, unsigned int *outCount);
//
////取成员属性列表
//class_copyPropertyList(__unsafe_unretained Class cls, unsigned int *outCount);
//
////协协议列表
//class_copyProtocolList(__unsafe_unretained Class cls, unsigned int *outCount);
//获得属性列表
unsignedintoutCount =0;
objc_property_t* cty =class_copyPropertyList([selfclass], &outCount);
NSMutableArray* arrayM = [NSMutableArrayarrayWithCapacity:outCount];
for(unsignedinti =0;i < outCount; i++) {
//获取属性. c语言中没有对象不要用*
objc_property_tpty = cty[i];
//获取属性名字
constchar* name =property_getName(pty);
//转码后添加到数组
[arrayMaddObject:[NSStringstringWithUTF8String:name]];
}
free(cty);
//属性个总数
//设置关联对像.把获取到的数组当作一个属性设给他
objc_setAssociatedObject(self,key, arrayM,OBJC_ASSOCIATION_COPY_NONATOMIC);
returnarrayM;
}
@end
