<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <shape android:shape="rectangle">
            <solid android:color="#007bff" />  <!-- Darker blue when pressed -->
            <corners android:radius="8dp" />
            <padding android:left="10dp" android:top="10dp" android:right="10dp" android:bottom="10dp" />
        </shape>
    </item>
    <item android:state_focused="true">
        <shape android:shape="rectangle">
            <solid android:color="#28a745" />  <!-- Slightly darker green when focused -->
            <corners android:radius="8dp" />
            <padding android:left="10dp" android:top="10dp" android:right="10dp" android:bottom="10dp" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#28a745" />  <!-- Green for default state -->
            <corners android:radius="8dp" />
            <padding android:left="10dp" android:top="10dp" android:right="10dp" android:bottom="10dp" />
            <stroke android:width="1dp" android:color="#000000" />  <!-- Black border -->
        </shape>
    </item>
</selector>

<Button
    android:id="@+id/bankButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Login"
    android:textColor="#ffffff"
    android:textSize="18sp"
    android:textStyle="bold"
    android:background="@drawable/bank_button_selector" />

Explanation of the code:

• bank_button_selector.xml (first code block): This XML file defines the button's appearance in different states (pressed, focused, and default). It uses a selector to manage these states. The shape element creates a rounded rectangle. Colors are chosen to represent a professional bank app feel (greens and blues). Padding adds space around the text. A stroke adds a subtle border.

• activity_main.xml (or your layout XML, second code block): This snippet shows how to use the bank_button_selector.xml in your layout. The Button element references the selector using the android:background attribute. Other attributes set the text, text color, text size, and text style for the button. wrap_content ensures the button only takes up the space needed.

To use this:

1. Create bank_button_selector.xml: Create this file in your res/drawable folder. Paste the first code block into it.

2. Use in your layout: Add the Button element (second code block) to your layout XML file. Make sure to replace activity_main.xml with the name of your layout file.

3. Adjust Colors and Styles: Change the color values (#007bff, #28a745, etc.) to match your bank app's branding. Adjust corner radius, padding, and stroke width as needed. You can also add an icon to the button using a drawableLeft or similar attribute within the Button element.

This provides a visually appealing and functional button suitable for a bank mobile app, emphasizing a clean and professional design. Remember to replace the placeholder text "Login" with the appropriate text for your button's function.