与大多数其他控件不同，EditText 在系统处于触摸模式"时是可聚焦的.第一个单击事件聚焦控件，而第二个单击事件实际上触发 OnClickListener.如果您使用 android:focusableInTouchMode View 属性禁用触摸模式焦点，则 OnClickListener 应该会按预期触发.

Unlike most other controls, EditTexts are focusable while the system is in 'touch mode'. The first click event focuses the control, while the second click event actually fires the OnClickListener. If you disable touch-mode focus with the android:focusableInTouchMode View attribute, the OnClickListener should fire as expected.

<EditText
        android:text="@+id/EditText01"
        android:id="@+id/EditText01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:focusableInTouchMode="false" />