按鈕事件

xml

<ImageButton

android:id="@+id/cleanerButton"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:contentDescription="@string/app_name"

android:layout_gravity="center_horizontal"

android:onClick="cleaner"

android:src="@drawable/cleaner" />

java

public void cleaner(View view){

}