runtime实际应用（1）- 获取对象属性及方法列表

创建NSObject的类目，引入runtime

#import <objc/runtime.h>

-(NSDictionary *)getAllPropertiesAndValues{
NSMutableDictionary *props = [NSMutableDictionary dictionary];
unsigned int outCount;
//属性的链表
objc_property_t *properties =class_copyPropertyList([self class], &outCount);
//遍历链表
for (int i = 0; i<outCount; i++)
{
objc_property_t property = properties[i];
//获取属性字符串
const char* propertyName =property_getName(property);
//转换成NSString
NSString *key = [NSString stringWithUTF8String:propertyName];
//获取属性对应的value
id value = [self valueForKey:key];
if (value)
{
[props setObject:value forKey:key];
}
}
//释放结构体数组内存
free(properties);
return props;
}

-(NSArray *)getAllMethods
{
unsigned int count_f =0;
//获取方法链表
Method* methodList_f = class_copyMethodList([self class],&count_f);

NSMutableArray *methodsArray = [NSMutableArray arrayWithCapacity:count_f];

for(int i=0;i<count_f;i++)
{
Method temp_f = methodList_f[i];
//方法的调用地址
IMP imp_f = method_getImplementation(temp_f);
//方法
SEL name_f = method_getName(temp_f);
//方法名字符串
const char* name_s =sel_getName(method_getName(temp_f));
//参数数量
int arguments = method_getNumberOfArguments(temp_f);
//返回方法的参数和返回值的描述的字串
const char* encoding =method_getTypeEncoding(temp_f);
NSLog(@"方法名：%@,参数个数：%d,编码方式：%@",[NSString stringWithUTF8String:name_s],
arguments,[NSString stringWithUTF8String:encoding]);

NSString *methodStr = NSStringFromSelector(name_f);
[methodsArray addObject:methodStr];

}
free(methodList_f);

return methodsArray;
}