Question

尝试获取用户播放列表中的所有曲目，它可以在Objective-C演示应用中运行，但是当我在Swift中尝试时，它会返回：

iframe

我正在使用此代码：

<SPTPlaylistList: 0x7fca22d72460>: 0-0 of 1 items (Function)

这是正在运行的Objective-C代码：

SPTPlaylistList.playlistsForUserWithSession(session, callback: { (error, object) -> Void in
            if error == nil {
                var playlists = object as! SPTListPage
                println(playlists)
                SPTPlaylistSnapshot.playlistWithURI(playlists.items[0].uri, accessToken: session.accessToken, callback: { (error:NSError!, obj) -> Void in
                    var playl = obj as! SPTPlaylistSnapshot
                    println(playl.firstTrackPage.tracksForPlayback)
                })
            }

        })

不确定为什么它会在Swift项目中返回[SPTPlaylistList playlistsForUserWithSession:session callback:^(NSError *error, id object) { SPTListPage *aa = object; NSLog(@"%@",aa.items); [SPTPlaylistSnapshot playlistWithURI:[NSURL URLWithString:@"spotify:user:spotifizr:playlist:3bpGFVfycGnhtcEVb95G98"] accessToken:session.accessToken callback:^(NSError *error, SPTPlaylistSnapshot *object) { NSLog(@"tracks on page 1 = %@", [object.firstTrackPage tracksForPlayback]); }]; }];而不是所有轨道。

编辑：尝试

(function)

但现在它返回nil，尽管我在播放列表中有50首曲目。

Answer 1

您需要在请求的范围中包含以下一项或两项，如果它们尚未存在： SPTAuthPlaylistReadPrivateScope和$(document).ready(function() { // The link is an anchor element with icon camera class // that will be attached with a new ID called wall-image-upload // which will destroyed after the window is brought up $( "a.icon.camera" ).click(function(e) { // Exit the function when wall-image-upload // id is created to avoid infinite loop if ($('#wall-image-upload').length!==0) { return; } // Create the ID e.target.setAttribute("id", "wall-image-upload"); // Create AjaxUpload object to handle the // image attachment where it looks up link // with wall-image-upload ID var uploader = new window.AjaxUpload( 'wall-image-upload', { action: 'wall_upload/{{$nickname}}', name: 'userfile', onSubmit: function(file,ext) { $('#profile-rotator').show(); }, onComplete: function(file,response) { addeditortext(response); $('#profile-rotator').hide(); } } ); // Simulate click on the element, this doesn't effect on // anything unfortunately $('#wall-image-upload').trigger("click"); // Destroy the id $('#wall-image-upload').prop("id",null); }); });分别允许访问用户的公开和私人播放列表。

请参阅https://github.com/spotify/ios-sdk

的身份验证和范围部分

SPTPlaylistSnapshot tracksForPlayback返回nil

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