In normal development, our ListView may not just simply display text or buttons, but more to display complex layouts. In this way, we have to write the layout and custom adapter ourselves, which is generally inherited from BaseAdapter. See the example code below. When writing the OnItemClickListener, the onItemClick method is not executed, resulting in the click event of the Item entry in the ListView invalid, and the View click event in the Item can be processed in the getView method. The reason why the entire Item click is mostly because the sub-controls such as ImageButton, Button, CheckBox (or sub-class controls of Button or Checkable) are present in the Item you define yourself]. At this time, these sub-controls will get the focus, so often when clicking on the item is the child control, and the click of the item itself does not respond.
At this time, you can use descendantFocusability to solve the problem, where there are 3 properties corresponding to descendantFocusability
This property defines the relationship between the viewGroup and its child controls when a view gets focus.
There are three types of attribute values:
beforeDescendants: viewgroup will prioritize its subclass controls to get focus
afterDescendants: viewgroup only gets focus when its subclass control does not need to get focus
blocksDescendants: viewgroup will override subclass controls and directly get focus
Usually we use the third type, that is, add the attribute android:descendantFocusability="blocksDescendants" to the root layout of the Item layout.
When I encountered a situation, the item layout has an ImageButton button, because this component has a strong ability to grab events, and the root button is almost the same; therefore, after running, the listviewitem click is invalid. Use the above method to solve the problem; of course, you can also change the imagebutton to imageview to solve the problem.