问题
I want to save an audio file to the Documents folder of my application while one of the classes in my app is streaming it. How can I do this?
Is it possible to save the streamed audio directly to an mp3? (if the audio file being streamed is an mp3 or I have to use caf?)
Thanks.
Edit: What if I am running the save in another thread and the user exits the application? I know an app cannot run in the background in an iPhone, but is there any way I can stop the download and remove the partially saved file when the user exits the app? Can I get an exit signal inside a class or in a delegate for NSURLConnection?
回答1:
If you are using the NSURLConnection or CFNetwork to download the file you can save it in the connectionDidFinishLoading delegate.
Take a look at Matt Gallaghers Streaming and playing an MP3 stream
回答2:
(void)applicationWillResignActive:(UIApplication *)application
{
}
Write your code in the above method in App delegate file.
回答3:
If you want to clean up your partially saved file on exit,
you could do worse than doing it from
- (void)applicationWillTerminate:(UIApplication *)application
in your app controller.
来源：https://stackoverflow.com/questions/423536/iphone-sdksaving-a-streamed-audio-file-to-documents-folder