本文介绍了一旦我有MPMediaItemPropertyPersistentID，我如何播放歌曲？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
NSArray * songs = [[NSArray alloc] initWithArray:[[MPMediaQuery songsQuery] collections]];
for (MPMediaItemCollection * item in songs){
NSString * persistentID = [[[item representativeItem] valueForProperty:MPMediaItemPropertyPersistentID] stringValue];
// Do something with it.
???
}
如果我有MPMediaItemPropertyPersistentID，我该如何播放歌曲？
How do i play song back once i have MPMediaItemPropertyPersistentID?
推荐答案
//Your song id NSString *songID;
MPMediaPropertyPredicate *predicate = [MPMediaPropertyPredicate predicateWithValue:songID forProperty:MPMediaItemPropertyPersistentID];
MPMediaQuery *mySongQuery = [[MPMediaQuery alloc] init];
//finding songs for predicate
[mySongQuery addFilterPredicate: predicate];
//add songs to queue
[musicPlayer setQueueWithQuery:mySongQuery];
[musicPlayer play];
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