Making a triangle shape using XML definitions?

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In this post I describe how to do it. And here is the XML defining triangle:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item>
        <rotate
            android:fromDegrees="45"
            android:toDegrees="45"
            android:pivotX="-40%"
            android:pivotY="87%" >
            <shape
                android:shape="rectangle" >
                <stroke android:color="@color/transparent" android:width="10dp"/>
                <solid
                    android:color="@color/your_color_here" />
            </shape>
        </rotate>
    </item>
</layer-list>

Refer to my post if something is unclear or you need explanation how it is built. It is rotated an cutout rectangle 🙂 it is very smart and well working solution.

EDIT:
to create an arrow pointing like –> use:

...
android:fromDegrees="45"
android:toDegrees="45"
android:pivotX="13%"
android:pivotY="-40%" >
...

And to create an arrow pointing like <– use:

android:fromDegrees="45"
android:toDegrees="45"
android:pivotX="87%"
android:pivotY="140%" >

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