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我有一个场景，我必须向来电者播放一首歌，当有人打电话给你时，你需要以编程方式接听电话并且必须播放一首歌。我认为 android sdk 是不可能的。谁能给我一个想法是什么方法来完成这项任务？
至少给我什么可能的方法来完成这项任务？