最近因項目需求，需要用到強制更新功能，網上搜了一下，挺多的，但是把網上的代碼拷貝以后，發現一個bug，就是進app，彈出框顯示，點擊現在升級，跳轉到AppStore下載里面，但是我不下載，又切回到app里面，發現彈出框就不跳了，其實也簡單，就是appdelegate里面有個代理方法，就是當app從后臺切到前臺走的方法，將強制更新方法在這里面在調用一下就行了~~~話不多說，上代碼?。?！用的話直接粘貼復制~
效果圖:
在appdelegate里面寫下面代碼
//提示版本更新
[self VersonUpdate];
#pragma mark ------提示用戶版本更新------
-(void)VersonUpdate{
//定義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
{
//獲取APP自身版本號
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:@"版本過低，需要升級到最新版本"];
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"升級提示" message:msg preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *otherAction = [UIAlertAction actionWithTitle:@"現在升級" 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];
}
//當app從后臺切到前臺時調用的方法
- (void)applicationDidBecomeActive:(UIApplication * )application
{
[self VersonUpdate];
}
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持億速云。
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