iphone - 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式。

如果用户订阅一个月，我想每天为他们提供新的内容（歌曲）。但我不确定如何解决这个问题。

我是否需要application didFinishLaunchingWithOptions在 -(void)applicationDidBecomeActive:(UIApplication *)application {

对于这种情况，我应该使用哪一个？

Answer 1

如果您计划在应用程序启动时开始新连接，那么您需要使用

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

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

- (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.
}