ios 自定义框架中的错误“没有已知的选择器'Hello：'的类方法”
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Error "No known class method for selector 'Hello:'" in custom-made framework
提问by Sam Baumgarten
I am making a framework for a company and I have completed all the code. I'm now trying to package it into a framework. As a test I made a method with this name: -(void)Hello:(NSString *)worldText;
我正在为一家公司制作一个框架，我已经完成了所有的代码。我现在正试图将它打包成一个框架。作为测试，我创建了一个具有此名称的方法：-(void)Hello:(NSString *)worldText;
When I try to call it in the application with the framework using this code [CompanyMobile Hello:@"World"];, I'm getting a compiler error which says
当我尝试使用此代码在带有框架的应用程序中调用它时[CompanyMobile Hello:@"World"];，我收到一个编译器错误，它说
No known class method for selector 'Hello:'
选择器 'Hello:' 没有已知的类方法
The .m in my framework is as follows:
我框架中的 .m 如下：
#import "Hello.h"
@implementation Hello
- (id)init
{
self = [super init];
if (self) {
// Initialization code here.
}
return self;
}
-(void)Hello:(NSString *)world {
}
@end
The .h in my framework is as follows:
我框架中的 .h 如下：
#import <Foundation/Foundation.h>
@interface Hello : NSObject
-(void)Hello:(NSString *)world;
@end
The .h in my application
我的应用程序中的 .h
//
// FMWK_TESTViewController.h
// FMWK TEST
//
// Created by Sam on 6/15/11.
// Copyright 2011 __MyCompanyName__. All rights reserved.
//
#import <UIKit/UIKit.h>
#import <companyMobile/Hello.h>
@interface FMWK_TESTViewController : UIViewController
@end
The .m in my application
我的应用程序中的 .m
//
// FMWK_TESTViewController.m
// FMWK TEST
//
// Created by Sam Baumgarten on 6/15/11.
// Copyright 2011 __MyCompanyName__. All rights reserved.
//
#import "FMWK_TESTViewController.h"
@implementation FMWK_TESTViewController
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[Badgeville Hello:@"Sam"];
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return YES;
}
@end
回答by Chuck
You defined Hello:as an instance method, but you're sending Hello:to the class. To define a class method, you write + (void)Hello:rather than - (void)Hello:.
您定义Hello:为实例方法，但您正在发送Hello:给类。要定义类方法，请编写+ (void)Hello:而不是- (void)Hello:.
回答by Tatvamasi
please refer to : https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/ProgrammingWithObjectiveC/Introduction/Introduction.html
请参考：https: //developer.apple.com/library/content/documentation/Cocoa/Conceptual/ProgrammingWithObjectiveC/Introduction/Introduction.html
to answer your question, change
回答你的问题，改变
@interface Hello : NSObject
-(void)Hello:(NSString *)world;
@end
to
到
@interface CompanyMobile : NSObject{
}
+(void)Hello:(NSString *)world;
@end
and call the method [CompanyMobile Hello:@"world"];
并调用该方法 [CompanyMobile Hello:@"world"];
