Object-C反射读取实体属性和值
2014-02-27 18:47
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举例:
首先定义TestModel如下:
@interface TestModel : NSObject
@property (nonatomic, strong) NSString *name;
@property (nonatomic, strong) NSString *desc;
@property (nonatomic, assign) int age;
@end
然后在viewControl中viewDidLoad中添加如下代码
TestModel *model = [[TestModel alloc] init];
model.name = @"Jack";
model.age = 30;
model.desc = @"some thing right";
unsigned int outCount, i;
objc_property_t *properties = class_copyPropertyList([model class], &outCount);
for (i=0; i<outCount; i++) {
objc_property_t property = properties[i];
const char *propertyName = property_getName(property);
const char *propertyAttribute = property_getAttributes(property);
NSString *name=[NSString stringWithCString:propertyName
encoding:NSUTF8StringEncoding];
NSString *attribute=[NSString stringWithCString:propertyAttribute
encoding:NSUTF8StringEncoding];
id value = [model valueForKey:[NSString stringWithUTF8String:propertyName]];
NSString * key = [[NSStringalloc]initWithCString:property_getName(property) encoding:NSUTF8StringEncoding];
NSLog(@"%@==%@\n",name,attribute);
NSLog(@"property[%d]:%@ value:%@\n", i, key, value);
}
执行结果如下:
2014-03-01 05:35:38.560 snippet[7267:70b] name==T@"NSString",&,N,V_name
2014-03-01 05:35:38.562 snippet[7267:70b] property[0]:name value:Jack
2014-03-01 05:35:38.562 snippet[7267:70b] desc==T@"NSString",&,N,V_desc
2014-03-01 05:35:38.563 snippet[7267:70b] property[1]:desc value:some thing right
2014-03-01 05:35:38.563 snippet[7267:70b] age==Ti,N,V_age
2014-03-01 05:35:38.564 snippet[7267:70b] property[2]:age value:30
欢迎光临~~
首先定义TestModel如下:
@interface TestModel : NSObject
@property (nonatomic, strong) NSString *name;
@property (nonatomic, strong) NSString *desc;
@property (nonatomic, assign) int age;
@end
然后在viewControl中viewDidLoad中添加如下代码
TestModel *model = [[TestModel alloc] init];
model.name = @"Jack";
model.age = 30;
model.desc = @"some thing right";
unsigned int outCount, i;
objc_property_t *properties = class_copyPropertyList([model class], &outCount);
for (i=0; i<outCount; i++) {
objc_property_t property = properties[i];
const char *propertyName = property_getName(property);
const char *propertyAttribute = property_getAttributes(property);
NSString *name=[NSString stringWithCString:propertyName
encoding:NSUTF8StringEncoding];
NSString *attribute=[NSString stringWithCString:propertyAttribute
encoding:NSUTF8StringEncoding];
id value = [model valueForKey:[NSString stringWithUTF8String:propertyName]];
NSString * key = [[NSStringalloc]initWithCString:property_getName(property) encoding:NSUTF8StringEncoding];
NSLog(@"%@==%@\n",name,attribute);
NSLog(@"property[%d]:%@ value:%@\n", i, key, value);
}
执行结果如下:
2014-03-01 05:35:38.560 snippet[7267:70b] name==T@"NSString",&,N,V_name
2014-03-01 05:35:38.562 snippet[7267:70b] property[0]:name value:Jack
2014-03-01 05:35:38.562 snippet[7267:70b] desc==T@"NSString",&,N,V_desc
2014-03-01 05:35:38.563 snippet[7267:70b] property[1]:desc value:some thing right
2014-03-01 05:35:38.563 snippet[7267:70b] age==Ti,N,V_age
2014-03-01 05:35:38.564 snippet[7267:70b] property[2]:age value:30
欢迎光临~~
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