即便import沒漏，依然找不到findViewbyId

1.import很多: import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.Window; import android.view.WindowManager; import android.view.Menu; import android.view.MenuItem; import android.os.PowerManager; import android.content.Context; import android.widget.Button; import android.util.Log;

2.問題在這裏: /MainActivity.java:39: cannot find symbol symbol : method findViewbyId(int) location: c.MainActivity Button myButton = findViewbyId(R.id.button_poweroff);

答案很簡單：findViewbyId should be findViewById 大小寫的問題，汗!