ViewController.m
NetworkTools.h
- #import <Foundation/Foundation.h>
- @interface NetworkTools : NSObject
- //设置全局访问点
- + (instancetype) sharedTools;
- @end
NetworkTools.m
- #import "NetworkTools.h"
- @implementation NetworkTools
- + (instancetype)sharedTools {
- static NetworkTools *instance = nil;
- static dispatch_once_t onceToken;
- dispatch_once(&onceToken,^{
- instance = [[NetworkTools alloc] init];
- });
- return instance;
- }
- @end
SoundTools.swift
- import UIKit
- class SoundTools: NSObject {
- //let 不可变 同样是线程安全的
- var baseURL: String?
- static let tools: SoundTools = { () -> SoundTools in
- let instance = SoundTools()
- instance.baseURL = "www.douniwan.com"
- return instance
- }()
- }