最近因项目需求，需要用到强制更新功能，网上搜了一下，挺多的，但是把网上的代码拷贝以后，发现一个bug，就是进app，弹出框显示，点击现在升级，跳转到AppStore下载里面，但是我不下载，又切回到app里面，发现弹出框就不跳了，其实也简单，就是appdelegate里面有个代理方法，就是当app从后台切到前台走的方法，将强制更新方法在这里面在调用一下就行了~~~话不多说，上代码！！！用的话直接粘贴复制~
效果图:
在appdelegate里面写下面代码
//提示版本更新
[self VersonUpdate];
#pragma mark ------提示用户版本更新------
-(void)VersonUpdate{
//定义app地址
NSString *urld = [NSString stringWithFormat:@"http://itunes.apple.com/lookup?id=%d",1178114725];
NSURL *url = [NSURL URLWithString:urld];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:10];
[request setHTTPMethod:@"POST"];
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *task = [session dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
NSLog(@"%@",response);
NSMutableDictionary *receiveStatusDic = [[NSMutableDictionary alloc]init];
if (data) {
NSDictionary *receiveDic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
if ([[receiveDic valueForKey:@"resultCount"] intValue] > 0) {
[receiveStatusDic setObject:@"1" forKey:@"status"];
[receiveStatusDic setObject:[[[receiveDic valueForKey:@"results"] objectAtIndex:0] valueForKey:@"version"] forKey:@"version"];
[self performSelectorOnMainThread:@selector(receiveData:) withObject:receiveStatusDic waitUntilDone:NO];
}else{
[receiveStatusDic setValue:@"1" forKey:@"status"];
}
}else{
[receiveStatusDic setValue:@"-1" forKey:@"status"];
}
}];
[task resume];
}
-(void)receiveData:(id)sender
{
//获取APP自身版本号
NSString *localVersion = [[[NSBundle mainBundle]infoDictionary]objectForKey:@"CFBundleShortVersionString"];
NSArray *localArray = [localVersion componentsSeparatedByString:@"."];//1.0
NSArray *versionArray = [sender[@"version"] componentsSeparatedByString:@"."];//3 2.1.1
// if ((versionArray.count == 2) && (localArray.count == versionArray.count)) {
if ([localArray[0] intValue] < [versionArray[0] intValue]) {
[self updateVersion];
}else if ([localArray[0] intValue] == [versionArray[0] intValue]){
if ([localArray[1] intValue] < [versionArray[1] intValue]) {
[self updateVersion];
}else if ([localArray[1] intValue] == [versionArray[1] intValue]){
if ([localArray[2] intValue] < [versionArray[2] intValue]) {
[self updateVersion];
}
}
}
// }
}
-(void)updateVersion{
NSString *msg = [NSString stringWithFormat:@"版本过低，需要升级到最新版本"];
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"升级提示" message:msg preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *otherAction = [UIAlertAction actionWithTitle:@"现在升级" style:UIAlertActionStyleDestructive handler:^(UIAlertAction*action) {
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"https://itunes.apple.com/cn/app/m-help/id1178114725?mt=8"]];
[[UIApplication sharedApplication]openURL:url];
}];
[alertController addAction:otherAction];
[self.window.rootViewController presentViewController:alertController animated:YES completion:nil];
}
//当app从后台切到前台时调用的方法
- (void)applicationDidBecomeActive:(UIApplication * )application
{
[self VersonUpdate];
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持Devmax。