Issue
I would like to specify just once in res/values/styles.xml the size of two checkboxes and their four shape drawables
- res/drawable/cb1_checked.xml
- res/drawable/cb1_unchecked.xml
- res/drawable/cb2_checked.xml
- res/drawable/cb2_unchecked.xml.
This way the size would appear one time in the style rather than four in the drawables.
Neither of the two attempts below work. Can you suggest a solution? (If you see what's wrong with these two attempts, please do mention it.)
----------------------------------------------------------------Attempt 1----------------------------------------------------------------
Replace
res/drawable/cb1_checked.xml
<size android:width="24dp"
android:height="24dp" />
with
res/values/styles.xml
<item name="android:layout_width">24dp</item>
<item name="android:layout_height">24dp</item>
----------------------------------------------------------------Attempt 2----------------------------------------------------------------
Add
res/values/styles.xml
<item name="android:background">cb_background</item>
and define a background drawable
res/drawable/cb_background.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#00FF00"/>
<size android:width="24dp"
android:height="24dp" />
</shape>
----------------------------------------------------------------Added----------------------------------------------------------------
Here is the full set of XML files:
res/layout/activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/MyLL"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<CheckBox
android:id="@+id/cb1"
style="@style/CB_style"
android:button="@drawable/cb1_selector"
android:height="@dimen/my24sp" />
<CheckBox
android:id="@+id/cb2"
style="@style/CB_style"
android:button="@drawable/cb2_selector"
android:height="@dimen/my24sp" />
</LinearLayout>
res/values/styles.xml
<style name="AppBaseTheme" parent="android:Theme.Light">
</style>
<style name="AppTheme" parent="AppBaseTheme">
</style>
<style name="CB_style" parent="@android:style/TextAppearance.Medium">
<item name="android:layout_width">wrap_content</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:layout_weight">1</item>
<item name="android:layout_gravity">center_horizontal</item>
<item name="android:gravity">center</item>
<item name="android:checked">false</item>
</style>
res/drawable/cb1_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"
android:constantSize="true">
<item android:state_checked="true"
android:drawable="@drawable/cb1_checked" />
<item android:state_checked="false"
android:drawable="@drawable/cb1_unchecked" />
</selector>
res/drawable/cb1_checked.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#FF0000"/>
<size android:width="24dp"
android:height="24dp" />
</shape>
res/drawable/cb1_unchecked.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#880000"/>
<size android:width="24dp"
android:height="24dp" />
</shape>
(and similarly for the cb2 selector and checked/unchecked drawables)
Solution
There is a weak solution, weak in the sense that android:width and android:height still appear four times, but at least the dimension can be adjusted by setting just one parameter.
For each of the four drawables, add
<size android:width="@dimen/my24dp"
android:height="@dimen/my24dp" />
and also define the dimension
res/values/dimens.xml
<dimen name="my24dp">24dp</dimen>
So the question remains: Can the size not be specified at all in the drawables?
Answered By - Calaf
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