I wish to make a diamond as a resource file so I am rotating a square in order to do so. The problem is that the corners seem to be getting cut off, making a hexagon instead. Also as a side note, I'd like to stretch it vertically if that's possible.
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<rotate
android:fromDegrees="45"
android:pivotX="50%"
android:pivotY="50%"
android:toDegrees="45"
>
<shape android:shape="rectangle">
<size
android:height="40dp"
android:width="40dp" />
<solid
android:color="@color/level_1_color" />
</shape>
</rotate>
</item>

Heres how:
**<item android:left="5dp" android:right="5dp" android:top="5dp" android:bottom="5dp">**
<rotate
android:fromDegrees="45"
android:toDegrees="45" >
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid
android:color="@color/sym_orange_bdfm"/>
<size
android:width="23dp"
android:height="23dp"/>
</shape>
</rotate>
</item>
Adjust Left/Right/Top/Bottom as needed.
来源:https://stackoverflow.com/questions/26576945/android-rotate-cuts-off-corners-of-shape