Android theme not being set
Solution 1
I've been struggling with this as well, and think I've finally found what may have been the problem - perhaps it is the same.
I had the custom theme defined in the res\values
folder, but not in the values-v11
and values-v14
folders. Which I think made it so that in some devices (specially the 2 I was testing with!), the theme could not be applied because it did not exist.
I now see the properties set in my custom theme (applied at the application level) taking effect.
Solution 2
I had to explicitly define theme for every <activity>
.
Solution 3
According to this answer, it appears that it isn't possible to provide layout_width
and layout_height
through styles. While it compiles, the exception it raises is:
E/AndroidRuntime(4117): java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.example/com.example.MainActivity}:
java.lang.RuntimeException: Binary XML file line #79: You must supply a
layout_width attribute.
I'm not sure why that is, but there might be a workaround. As this question suggests, you might be able provide a reference as the width and height parameter.
Again, my experiences are that Android doesn't properly support providing the widget dimensions through styles.
Ross
Updated on June 06, 2022Comments
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Ross about 2 years
I have a theme that refuses to be applied to activities - none of the styles are applied. If I don't supply the
layout_width
/layout_height
attributes for<Button>
it also gets a runtime error, showing that theButton
class isn't being applied./res/values/themes.xml:
<?xml version="1.0" encoding="utf-8"?> <resources> <style name="Theme" parent="android:style/Theme.Black"> <item name="android:windowNoTitle">true</item> <item name="android:buttonStyle">@style/Button</item> <item name="android:windowBackground">@color/page_background_light</item> <item name="android:textAppearance">@style/TextAppearance</item> </style> </resources>
/res/values/styles.xml:
<?xml version="1.0" encoding="utf-8"?> <resources> <style name="TextAppearance" parent="@android:style/TextAppearance"> <item name="android:textSize">12sp</item> <item name="android:textColor">@color/darkblue</item> </style> <style name="Button" parent="@android:style/Widget.Button"> <item name="android:layout_width">fill_parent</item> <item name="android:layout_height">wrap_content</item> <!--<item name="android:textColor">#3C2F4F</item> <item name="android:textSize">20dip</item>--> </style> </resources>
and the relevant manifest setting:
<application android:icon="@drawable/icon" android:label="@string/app_name" android:theme="@style/Theme">
What's the obvious mistake I'm missing?
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Rolf ツ almost 12 yearsAs long as your xml file is in the values folder everything should be fine, and the name of the file should not make a difference.
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dennisdrew almost 12 yearsAfter looking over the official documentation, you are correct. However, I do spy another possible error. Updating now.
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Richard over 10 yearsThank you! I just about went crazy trying to figure out what I was doing wrong.
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Bayar Şahintekin over 2 yearsThere should be a way we can mange entire theme from one xml file.