因此,我在我的應用程序中使用mpmediapicker檢索歌曲信息。我想分配歌曲信息到詞典,因此很容易將其填充到tableview。但是,當將值賦給for循環的字典時,我遇到了麻煩。如何使用for循環將字符串分配給NSDictionary?
這裏是我的代碼:
for thisItem in mediaItemCollection!.items as! [MPMediaItem]{
let itemUrl = thisItem.valueForProperty(MPMediaItemPropertyAssetURL)
as? NSURL
let itemTitle =
thisItem.valueForProperty(MPMediaItemPropertyTitle)
as? String
let itemArtist =
thisItem.valueForProperty(MPMediaItemPropertyArtist)
as? String
let itemArtwork =
thisItem.valueForProperty(MPMediaItemPropertyArtwork)
as? MPMediaItemArtwork
playlist = ["title" : itemTitle! , "artist" : itemArtist!, "song_url" : itemUrl!]
}
以下是我得到:
Optional({
artist = "ASKING ALEXANDRIA";
"song_url" = "ipod-library://item/item.mp3?id=5357233978197423496";
title = Alerion;
})
它只能檢索最後一首歌。我該如何解決這個問題?
我想要的格式是如下圖所示:
Optional({artist = "ASKING ALEXANDRIA";"song_url" = "ipod-library://item/item.mp3?id=5357233978197423496";title = Alerion;}, {artist = "ASKING ALEXANDRIA";"song_url" = "ipod-library://item/item.mp3?id=5357239348197423496"; title = The Prophecy;}, {artist = "ASKING ALEXANDRIA";"song_url" = "ipod-library://item/item.mp3?id=53572339781974234123";title = Breathless;})
我怎麼能這樣做?
非常感謝後
打印,您的建議是工作:d –
隨時歡迎@EgaSetyaPutra –