我完全按講的來寫的，就是有問題，個位看得到我的網友做出來的發我一份
Process: com.example.administrator.mooccamera, PID: 19857
??? java.lang.IllegalStateException: Could not execute method for android:onClick
Caused by: java.lang.reflect.InvocationTargetException
Caused by: java.lang.RuntimeException: autoFocus failed
這是我的三個異常
2019-03-27
https://github.com/EddyAnd/PlayMusicDemo.git