常见的一个错误

在调用：

        BlogDB *blogDB = [[BlogDB alloc] init];
        [blogDB saveBlog:self];
        [blogDB findWithBlogid:@"1" limit:20];
        [blogDB release];


出现


2013-05-06 17:59:17.105 LRDemo[44313:c07] -[BlogDB findWithBlogid:limit:]: unrecognized selector sent to instance 0x81de740

2013-05-06 17:59:17.106 LRDemo[44313:c07] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[BlogDB findWithBlogid:limit:]: unrecognized selector sent to instance 0x81de740'
*** First throw call stack:
(0x1f8b052 0x195ad0a 0x1f8cced 0x1ef1f00 0x1ef1ce2 0x3455f 0x7f6a2 0x7f765 0x7f7e0 0x80342 0x1f8ce72 0x4ecab 0x1f8ce72 0x16289ef 0x1f5f97f 0x1ec2b73 0x1ec2454 0x1ec1db4 0x1ec1ccb 0x2238879 0x223893e 0xd10a9b 0x2fd69 0x2485)

terminate called throwing an exception(lldb)


unrecognized selector sent to instance 0x81de740_CSS


解决方案：


- (NSArray *) findWithBlogid:(NSString *) blogid limit:(int) limit{}


在 .h 头文件中没有 声明 - (NSArray *) findWithBlogid:(NSString *) blogid limit:(int) limit；


声明了 之后就可以了