-(BOOL) respondsToSelector: selector 用来判断是否有以某个名字命名的方法(被封装在一个selector的对象里传递)
@protocol ShareFileUploadDelegate <NSObject>
- (void) didFinishUpload:(ShareFileUpload*)obj;
@end
if ([delegate respondsToSelector:@selector(didFinishUpload:)]) {
[delegate didFinishUpload:self];
}
#pragma mark -
#pragma FileUploadDelegate
- (void) didFinishUpload:(ShareFileUpload*)obj
{
[self setModalViewPrompt:NSLocalizedString(@"UploadSuccess", nil)];
[self performSelector:@selector(showModalView:) withObject:[NSNumber numberWithBool:NO] afterDelay:1.5];
[self clear];
SAFE_RELEASE(obj);
}