How to create a selected state for Android ImageButton

If you're looking to create a selected state for an Android ImageButton, you're in luck because it's a relatively simple process.

To start, you'll need to create an XML file in your drawable folder that defines the state list. Here's an example:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns_android="http://schemas.android.com/apk/res/android">
    <item android_state_pressed="true"
        android_drawable="@drawable/image_button_pressed" />
    <item android_state_selected="true"
        android_drawable="@drawable/image_button_selected" />
    <item android_drawable="@drawable/image_button_normal" />
</selector>

In this example, we're defining three states: pressed, selected, and normal. The "pressed" state will be displayed when the user presses on the button, the "selected" state will be displayed when the button is selected, and the "normal" state will be displayed otherwise.

Next, you'll need to set the ImageButton's background to this state list. You can do this in your layout XML file like so:

<ImageButton
    android_id="@+id/my_image_button"
    android_layout_width="wrap_content"
    android_layout_height="wrap_content"
    android_background="@drawable/my_image_button_state_list" />

In this example, we're setting the ImageButton's background to "my_image_button_state_list", which is the name of the XML file we created earlier.

Finally, you'll need to set the ImageButton's selected state programmatically. You can do this in your Java code like so:

ImageButton myImageButton = findViewById(R.id.my_image_button);
myImageButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        v.setSelected(!v.isSelected());
    }
});

In this example, we're setting an OnClickListener for the ImageButton that toggles its selected state when it's clicked.

And that's it! With these three steps, you should now have a working selected state for your Android ImageButton.