iOS 版本更新

众所周知苹果拒绝任何带有版本更新的提示出现在页面中，因此我们通过接口获取，处理是否显示更新提示。

1.判断版本号

请求服务器版本号:

NSString *newVersion = @"3.2.1";

获取当前版本号:

NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary];
NSString *lastVersion = infoDic[@"CFBundleShortVersionString"];

1.1 判断字符串

if (![lastVersion isEqualToString:newVersion]) {
  //更新
}else {
  //不更新
}

1.2 比较大小

lastVersion = [lastVersion stringByReplacingOccurrencesOfString:@"." withString:@""];
if (lastVersion.length==2) {
    lastVersion  = [lastVersion stringByAppendingString:@"0"];
}else if (lastVersion.length==1){
    lastVersion  = [lastVersion stringByAppendingString:@"00"];
}
newVersion = [newVersion stringByReplacingOccurrencesOfString:@"." withString:@""];
if (newVersion.length==2) {
    newVersion  = [newVersion stringByAppendingString:@"0"];
}else if (newVersion.length==1){
    newVersion  = [newVersion stringByAppendingString:@"00"];
}
if([lastVersion floatValue] < [newVersion floatValue]) {
    //更新
}else {
    //不更新
}

2.提示弹框

- (void)showUpdateWithNewVersion:(NSString *)newVersion isForce:(int)inForce content:(NSString *)content urlStr:(NSString *)urlStr {
    //当前项目版本号
    NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary];
    NSString *lastVersion = infoDic[@"CFBundleShortVersionString"];

    NSString *str = [content stringByReplacingOccurrencesOfString:@"\\n" withString:@"\n"];

    if ([lastVersion isEqualToString:newVersion]) {
        
        if (inForce == 2) {
            //非强制更新
            UIAlertController *alert =[UIAlertController alertControllerWithTitle:@"发现新版本" message:str preferredStyle:UIAlertControllerStyleAlert];
            alert.messageLabel.textAlignment = NSTextAlignmentLeft;
            
            UIAlertAction *cancel = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault handler:nil];
            [alert addAction:cancel];
            UIAlertAction *sure = [UIAlertAction actionWithTitle:@"立即更新" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
                
                // 跳转appStore
                NSURL *url = [NSURL URLWithString:urlStr];
                [[UIApplication sharedApplication] openURL:url];
            }];
            [alert addAction:sure];
            
            [self presentViewController:alert animated:YES completion:nil];
            
        }else if (inForce == 1) {
            //强制更新
            UIAlertController *alert =[UIAlertController alertControllerWithTitle:@"发现新版本" message:str preferredStyle:UIAlertControllerStyleAlert];
            UIAlertAction *sure = [UIAlertAction actionWithTitle:@"立即更新" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
                
                // 跳转appStore
                NSURL *url = [NSURL URLWithString:urlStr];
                [[UIApplication sharedApplication] openURL:url];
            }];
            [alert addAction:sure];
            alert.messageLabel.textAlignment = NSTextAlignmentLeft;
            
            [self presentViewController:alert animated:YES completion:nil];
        }
    }
}

3.关于跳转Url

注意跳转链接：有可能会直接跳转到 itunes 而不是 AppStore，跳转到 itunes 的后果是 itunes 里面不是 更新按钮 而是 打开按钮，点击打开按钮又返回到了 app，即失去了更新的功能。

// 会跳转到 itune
NSURL *url1 = [NSURL URLWithString:@"itms://itunes.apple.com/cn/app/id1127249355?mt=8"];
// 跳转 AppStore
NSURL *url2 = [NSURL URLWithString:@"itms-apps://itunes.apple.com/cn/app/id1127249355?mt=8"];
// 跳转 AppStore
NSURL *url3 = [NSURL URLWithString:@"https://itunes.apple.com/cn/app/id1127249355?mt=8"];

[[UIApplication sharedApplication] openURL:url];

4.Url拼接的Apple ID 去哪找

4.1

itunes connect 》我的APP 》Apple ID

Apple ID.png

4.2 若是在是找不到APP ID Apple ，另外一种url也可实现

http://itunes.apple.com/lookup?bundleId=项目的BundelIdentifier&country=cn
例如：
http://itunes.apple.com/lookup?bundleId=com.xxxx.yyyy&country=cn