Click is not working on the Listitem Listview android

The first thing what you have to note here is, whenever there are Clickable elements like Buttons or ImageButtons present in your ListView element, they take the control of click events. And so your ListView won't get the chance to accept the click event.

What you simply have to do is, set the focusable attribute to false for the Button or ImageButton you have in your ListView. But still they will work without any problem and also your ListView's onListItemClick will also work.

Try this,

        <Button  android:id="@+id/textsize_increaser"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@+id/back_button"
        android:focusable="false"
        android:text=" A + "/>

Here I have added this android:focusable="false" and it works fine. try it.

Have you set the choice mode of ListView to SINGLE :

     listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);

And if you have any clickable imageview or textview or button in the list item, then make them not focusable (in your Adapter class):

        yourButton.setFocusable(false);
        yourButton.setFocusableInTouchMode(false);

Are you using custom Adapter? and inflating layout with button or any view that eats away the list list view focus as child, then it won't work obviously. make sure to set

    android:focusable="false"

to such view in xml file. hope this works for you.