- @interface person : NSObject
- @property (nonatomic, strong) NSString *name;
- @end
-
- int main(){
- unsigned int outCount = 0;
- objc_property_t *properties = class_copyPropertyList([person class], &outCount);
- for(int i = 0; i < outCount; i++){
- unsigned int count = 0;
- objc_property_attribute_t *attributes = property_copyAttributesList(properties[i], &count);
- for(int j = 0; j < count; j++){
- <span style="white-space:pre"> </span>NSLog(@"attribute.name = %s, attribute.value = %s", attributes[j].name, attributes[j].value);
- }
- }
- return 0;
- }
objc_property_attribute_t的value和name
常用attribute | name | value |
nonatomic | "N" | "" |
strong/retain | "&" | "" |
weak | "W" | "" |
属性的类型type | "T" | "@TypeName", eg"@\"NSString\"" |
属性对应的实例变量Ivar | "V" | "Ivar_name", eg "_name" |
readonly | "R" | "" |
getter | "G" | "GetterName", eg"isRight" |
setter | "S" | "SetterName", eg"setName" |
assign/atomic | 默认即为assign和retain | |
动态添加属性
- @interface person : NSObjec{
- NSString *_name;
- }
- int main(){
- objc_property_attribute_t nonatomic = {"N", ""};
- objc_property_attribute_t strong = {"&", ""};
- objc_property_attribute_t type = {"T", "@\"NSString\""};
- objc_property_attribute_t ivar = {"V", "_name"};
- objc_property_attribute_t attributes[] = {nonatomic, strong, type, ivar};
- BOOL result = class_addProperty([person class], "name", attributes, 4);
转载地址:http://blog.csdn.net/myzlk/article/details/50815381