戻るキーでEditTextのフォーカスをはずす - Qiitapackage com.example.android.sampleapp; import android.content.Context; import android.util.AttributeSet; import android.view.KeyEvent; import android.view.View; import android.widget.EditText; public class MyEditText extends EditText { public MyEditText(Context context) { super(context); } public MyEditText(Context context, AttributeSet attrs) { super(context, attrs); } public MyEditText(Context c
