Question

I want to change the button shape with round edges but somehow it does not work when I define it in my styles.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <style name="ButtonStyle">
        <item name="android:textColor">#00FFFF</item>
        <item name="android:shape">rectangle</item>
        <item name="android:bottomRightRadius">7dp</item>
        <item name="android:bottomLeftRadius">7dp</item>
        <item name="android:topRightRadius">7dp</item>
        <item name="android:topLeftRadius">7dp</item>
    </style>

</resources>

main.xml button

<Button
    android:id="@+id/button4"
    style="@style/ButtonStyle"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_marginRight="31dp"
    android:layout_toLeftOf="@+id/button3"
    android:text="@string/sSettings" />

Only the Font Color is changed.
What am I doing wrong?

Answer 1

You have to declare a background drawable for the button.
Do this in res/drawables. Make a new drawable file like this:

/res/drawable/button_drawable.xml

<?xml version="1.0" encoding="utf-8"?>
<shape
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners
        android:radius="7dp" />
    <solid android:color="#666666"/>

</shape>

then in your layout do:

<Button
    android:id="@+id/button4"
    style="@style/ButtonStyle"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:background="@drawable/button_drawable"
    android:layout_marginRight="31dp"
    android:layout_toLeftOf="@+id/button3"
    android:text="@string/sSettings" />

if you want to set each corner you can also do this with:

<corners android:bottomRightRadius="7dp"
    android:bottomLeftRadius="7dp" 
    android:topLeftRadius="7dp"
    android:topRightRadius="7dp"/>

Have a look here for all the options.