Android開發中Unable to instantiate activity ComponentInfo java.lang.NullPointerException解決方案

錯誤信息：E/AndroidRuntime(596): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{cn.edu.buaa/skylz.mp3player.PlayerActivity}: java.lang.NullPointerException 出現這個錯誤我是一遍一遍看代碼，而且用排除法排

>>阅读原文<<