iOS 规避苹果审查，实现app store上的app版本强制更新

要想规避苹果审查，我们需要通过调用数据接口来控制调用app 版本强制更新功能：当苹果在审查的时候，我们可以通过后台数据控制关闭版本强制更新功能，等苹果审核通过以后我通过后台控制打开版本强制更新功能。下面是app 版本强制更新功能实现的代码：

AppDelegate.h文件
#import <UIKit/UIKit.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate,UIAlertViewDelegate>

@property (strong, nonatomic) UIWindow *window;

@end

AppDelegate.m文件
#import "AppDelegate.h"
#import "ViewController.h"
@interface AppDelegate ()
{
ViewController *vc;
}
@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen] bounds]];

self.window.backgroundColor = [UIColor whiteColor];

vc = [[ViewController alloc]init];

UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:vc];

self.window.rootViewController = nav;

return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application {
// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
// Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application {

// Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
// If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application {

[vc checkVersion];

// Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application {

// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application {

// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end

ViewController.h文件
#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

-(void)checkVersion;
@end

ViewController.m文件

#import "ViewController.h"

@interface ViewController ()
@end

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];

self.title = @"版本检测更新";

self.view.backgroundColor = [UIColor whiteColor];

[self checkVersion]; //检测升级

}

-(void)checkVersion
{
NSString *newVersion;
NSURL *url = [NSURL URLWithString:@"http://itunes.apple.com/cn/lookup?id=1139094792"];//1137865162
NSString *jsonResponseString = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];
// NSLog(@"通过appStore获取的数据信息：%@",jsonResponseString);

NSData *data = [jsonResponseString dataUsingEncoding:NSUTF8StringEncoding];
id json = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];

NSArray *array = json[@"results"];

for (NSDictionary *dic in array) {

newVersion = [dic valueForKey:@"version"];

}

// NSLog(@"通过appStore获取的版本号是：%@",newVersion);
// 解析json数据
//获取本地软件的版本号
NSString *localVersion = [[[NSBundle mainBundle]infoDictionary] objectForKey:@"CFBundleVersion"];

NSString *msg = [NSString stringWithFormat:@"你当前的版本是V%@，发现新版本V%@，请更新新版本哦！",localVersion,newVersion];

//对比发现的新版本和本地的版本
if ([newVersion floatValue] > [localVersion floatValue])
{

UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"升级提示"message:msg preferredStyle:UIAlertControllerStyleAlert];

[self presentViewController:alert animated:YES completion:nil];

[alert addAction:[UIAlertAction actionWithTitle:@"现在升级" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"https://itunes.apple.com/cn/app/yi-ka-tongbic-ban/id1139094792?l=en&mt=8"]];//1137865162
// NSLog(@"点击现在升级按钮");
}]];

}
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

@end