iOS开发之一句代码检测APP版本的更新

时间：2023-01-07 15:31:02
  • 提示更新效果图如下，当然也是可以自定义类似与AlertView相似的自定义view，如京东、网易云音乐都是自定义了这种提示框的view。以下只展示，从App Store获取到app信息、并解析app信息获取发布在App Store上的版本号与当前手机里安装的app版本号做对比，如果有更新就做提示。iOS开发之一句代码检测APP版本的更新
  • 在工程中新建一个NSObject类，将以下.h和.m文件中的代码拷贝至这个新建的类中。
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  • //
    //  HKCheckAppVersionMgr.h
    //  HKTyy
    //
    //  Created by isHakan on 17/3/24.
    //  Copyright © 2017年 liuhuakun. All rights reserved.
    //
     
    #import <Foundation/Foundation.h>
     
    @interface HKCheckAppVersionMgr : NSObject
     
    + (HKCheckAppVersionMgr *)sharedInstance;
    - (void)isUpdataApp:(NSString *)appId;
     
    @end

•
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  • //
    //  HKCheckAppVersionMgr.m
    //  HKTyy
    //
    //  Created by isHakan on 17/3/24.
    //  Copyright © 2017年 liuhuakun. All rights reserved.
    //
     
    #import "HKCheckAppVersionMgr.h"
     
    #import <UIKit/UIKit.h>
     
    @interface HKCheckAppVersionMgr ()<UIAlertViewDelegate>
     
    @property (nonatomic, strong) NSString *appId;
     
    @end
     
    @implementation HKCheckAppVersionMgr
     
    + (HKCheckAppVersionMgr *)sharedInstance
    {
        static HKCheckAppVersionMgr *instance = nil;
         
        static dispatch_once_t onceToken;
        dispatch_once(&onceToken, ^{
             
            instance = [[HKCheckAppVersionMgr alloc] init];
             
        });
         
        return instance;
    }
     
    - (void)isUpdataApp:(NSString *)appId
    {
        NSURL *appUrl = [NSURL URLWithString:[NSString stringWithFormat:@"http://itunes.apple.com/lookup?id=%@",appId]];
        NSString *appMsg = [NSString stringWithContentsOfURL:appUrl encoding:NSUTF8StringEncoding error:nil];
        NSDictionary *appMsgDict = [self jsonStringToDictionary:appMsg];
        NSDictionary *appResultsDict = [appMsgDict[@"results"] lastObject];
        NSString *appStoreVersion = appResultsDict[@"version"];
        float newVersionFloat = [appStoreVersion floatValue];//新发布的版本号
         
        NSString *currentVersion = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];
        float currentVersionFloat = [currentVersion floatValue];//使用中的版本号
         
        //当前版本小于App Store上的版本&用户未点击不再提示
        if (currentVersionFloat<newVersionFloat && ![self isAlertUpdataAgain])
        {
            self.appId = appId;
            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"提示" message:@"检测到新版本，是否去更新？" delegate:self cancelButtonTitle:@"去更新" otherButtonTitles:@"下次再说",@"不再提示", nil];
            [alertView show];
        }
         
    }
     
    - (NSDictionary *)jsonStringToDictionary:(NSString *)jsonStr
    {
        if (jsonStr == nil)
        {
            return nil;
        }
         
        NSData *jsonData = [jsonStr dataUsingEncoding:NSUTF8StringEncoding];
        NSError *error;
        NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:jsonData
                                                             options:NSJSONReadingMutableContainers
                                                               error:&error];
        if (error)
        {
            //NSLog(@"json格式string解析失败:%@",error);
            return nil;
        }
         
        return dict;
    }
     
     
    #pragma mark UIAlertViewDelegate
    - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
    {
        if (buttonIndex==0)
        {
            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://itunes.apple.com/app/id%@",self.appId]]];
            return;
        }
         
        if (buttonIndex==2)
        {
            [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"IS_ALERT_AGAIN"];
            [[NSUserDefaults standardUserDefaults] synchronize];
            return;
        }
    }
     
    - (BOOL)isAlertUpdataAgain
    {
        BOOL res = [[NSUserDefaults standardUserDefaults] objectForKey:@"IS_ALERT_AGAIN"];
        return res;
    }
     
    @end

•
  • 在需要检测App版本是否有更新的地方-[以下是以在ViewController处检测App版本更新为例]：
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  • //  ViewController.m
    //  Demo
    //
    //  Created by isHakan on 2017/7/21.
    //  Copyright © 2017年 liuhuakun. All rights reserved.
    //
     
    #import "ViewController.h"
     
    //引入‘头文件’
    #import "HKCheckAppVersionMgr.h"
     
    //发布在App Store的Apple ID
    #define kYourAppleID @"1234567890"
     
    @interface ViewController ()
     
    @end
     
    @implementation ViewController
     
    - (void)viewDidLoad
    {
        [super viewDidLoad];
        // Do any additional setup after loading the view, typically from a nib.
         
        //一句代码检测更新
        [[HKCheckAppVersionMgr sharedInstance] isUpdataApp:kYourAppleID];
    }
     
    - (void)didReceiveMemoryWarning
    {
        [super didReceiveMemoryWarning];
        // Dispose of any resources that can be recreated.
    }
     
     
    @end

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