获取iOS。app store 应用信息

.h文件


@interface CheckUpdateTool : NSObject

/**
 从苹果服务器获取版本
 */
+ (void)getVersionFromServer;

@end

.m文件

#import "CheckUpdateTool.h"
#import 

#define APPLEID @"AppleID"               /// App 在苹果开发者中生成的Apple ID

@implementation CheckUpdateTool

+ (void)getVersionFromServer {
    // 取出本地的版本号
    NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
    NSString *app_build = [infoDictionary objectForKey:@"CFBundleShortVersionString"];
    
    /// 当前版本
    double currentVersion = [app_build stringByReplacingOccurrencesOfString:@"." withString:@""].doubleValue;
    
    //1.创建会话对象
    NSURLSession *session = [NSURLSession sharedSession];

    
    //2.根据会话对象创建task
    NSString *requestStr = [@"http://itunes.apple.com/cn/lookup?id=" stringByAppendingString:APPLEID];
    NSURL *url = [NSURL URLWithString:requestStr];
    
    //3.创建可变的请求对象
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    
    //4.修改请求方法为POST
    request.HTTPMethod = @"POST";
    
    //5.设置请求体
    request.HTTPBody = [@"" dataUsingEncoding:NSUTF8StringEncoding];
    
    //6.根据会话对象创建一个Task(发送请求)
    /*
     第一个参数:请求对象
     第二个参数:completionHandler回调(请求完成【成功|失败】的回调)
     data:响应体信息(期望的数据)
     response:响应头信息,主要是对服务器端的描述
     error:错误信息,如果请求失败,则error有值
     */
    NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable responseObject, NSError * _Nullable error) {
        
        if (data) {
            
            //返回数据的处理逻辑
            NSDictionary *response = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
            NSArray *appInfos = response[@"results"];
            if (!appInfos || appInfos.count <= 0) {
                return;
            }
            NSDictionary *appInfo = appInfos[0];
            
            //服务器版本
            double serverVersion = [appInfo[@"version"] stringByReplacingOccurrencesOfString:@"." withString:@""].doubleValue;
            
            /// 服务器版本大于本地版本
            if (serverVersion > currentVersion) {
                UIAlertController *al = [UIAlertController alertControllerWithTitle:@"发现新版本" message:appInfo[@"releaseNotes"] preferredStyle:UIAlertControllerStyleAlert];
                
                [al addAction:[UIAlertAction actionWithTitle:@"前往更新" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
                    /// 前往更新
                    NSString *str = [[NSString stringWithFormat:@"itms-apps://itunes.apple.com/app/id"] stringByAppendingString:APPLEID];
                    
                    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:str]];
                }]];
                [al addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDestructive handler:nil]];
                
                [[UIApplication sharedApplication].keyWindow.rootViewController presentViewController:al animated:YES completion:nil];
            }
        }

    }];
    
    //7.执行任务
    [dataTask resume];
}


@end

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