How To Make Bottom Border In Drawable Shape XML Selector?

I'm trying to create a drawable shape with different states for my button. So I wrote this:

Solution 1:

First I'm separating the shapes to make them easier to manage.

This is your btn_negative_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@xml/rectangle_button_pressed" android:state_pressed="true"></item>
    <item android:drawable="@xml/rectangle_button_focused" android:state_focused="true"></item>
    <item android:drawable="@xml/rectangle_button" ></item>
</selector>

create folder called 'xml' in your res and save these shapes into it:

1) rectangle_button_pressed:

    <shape xmlns:android="http://schemas.android.com/apk/res/android" 
android:shape="rectangle" >
        <solid android:color="@color/NEGATIVE_pressed" />
        <stroke
            android:width="1dp"
            android:color="@color/ORANGE" />
        <corners android:radius="4dp" />
    </shape>

2) rectangle_button_focused:

    <shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
        <solid android:color="@color/NEGATIVE_focused" />
        <stroke
            android:width="1dp"
            android:color="@color/ORANGE" />
        <corners android:radius="4dp" />
    </shape>

3) This one rectangle_button.xml will have a border at the bottom of it by defining a shape using <layer-list>. first <item> is bottom layer and last <item> is the top layer.

<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item>
        <shape android:shape="rectangle">
            <solid android:color="@color/gray"/>
            <corners android:radius="4dp"/>
        </shape>
    </item>
    <item android:bottom="3dp">
        <shape android:shape="rectangle">
            <solid android:color="@color/orange" />
            <corners android:radius="4dp"/>
        </shape>

    </item>
</layer-list>

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