应用程序 didFinishLaunchingWithOptions 或 applicationDidBecomeActive

Question

我想知道如何为用户提供从服务器下载内容的方法。

如果用户订阅了一个月，我想每天给他们一个新的内容（歌曲）。但我不确定如何处理这个问题。

我需要在application didFinishLaunchingWithOptions 或(void)applicationDidBecomeActive:(UIApplication *)application { 中调用网络服务

这种情况我应该使用哪一个？

Answer 1

如果您打算在应用启动时开始新连接，那么您会想要使用

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.
    return YES;
}

但是，applicationDidBecomeActive 更适合恢复您在应用程序后台运行时暂停的下载。从这里开始下载也可以接受。

- (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.
}