Add floating point value to android resources/values

by

There is a solution:

<resources>
    <item name="text_line_spacing" format="float" type="dimen">1.0</item>
</resources>

In this way, your float number will be under @dimen. Notice that you can use other “format” and/or “type” modifiers, where format stands for:

Format = enclosing data type:

  • float
  • boolean
  • fraction
  • integer
  • …

and type stands for:

Type = resource type (referenced with R.XXXXX.name):

  • color
  • dimen
  • string
  • style
  • etc…

To fetch resource from code, you should use this snippet:

TypedValue outValue = new TypedValue();
getResources().getValue(R.dimen.text_line_spacing, outValue, true);
float value = outValue.getFloat();

I know that this is confusing (you’d expect call like getResources().getDimension(R.dimen.text_line_spacing)), but Android dimensions have special treatment and pure “float” number is not valid dimension.

Additionally, there is small “hack” to put float number into dimension, but be WARNED that this is really hack, and you are risking chance to lose float range and precision.

<resources>
    <dimen name="text_line_spacing">2.025px</dimen>
</resources>

and from code, you can get that float by

float lineSpacing = getResources().getDimension(R.dimen.text_line_spacing);

in this case, value of lineSpacing is 2.024993896484375, and not 2.025 as you would expected.

More Related Contents:

  1. Change app language programmatically in Android
  2. Android: How do I get string from resources using its name?
  3. Android: alternate layout xml for landscape mode
  4. Different values folders in android
  5. android.view.InflateException: Binary XML file line #12: Error inflating class
  6. How to read file from res/raw by name
  7. Change value of R.string programmatically
  8. Android read text raw resource file
  9. Android OnClickListener – identify a button
  10. Retrieving all Drawable resources from Resources object
  11. Getting android.content.res.Resources$NotFoundException: exception even when the resource is present in android
  12. How to get access to raw resources that I put in res folder?
  13. Get path of Android resource
  14. Accessing contents of R.string using a variable to represent the resource name
  15. Android studio compile error “Content is not allowed in prolog”
  16. Load language specific string from resource?
  17. Changing locale: Force activity to reload resources?
  18. WebView, add local .CSS file to an HTML page?
  19. Scala Programming for Android
  20. Difference between getString() and getResources.getString()
  21. You must supply a resource ID for a TextView android error
  22. Naming rules for Android resources
  23. how to access resources in a android library project
  24. What is the best sdk version for com.google.android.gms:play-services-maps?
  25. Handling click events on a drawable within an EditText
  26. How do I prevent the status bar and navigation bar from animating during an activity scene animation transition?
  27. How do you check the internet connection in android? [duplicate]
  28. Read & writing arrays of Parcelable objects
  29. How to send hashmap value to another activity using an intent
  30. How to merge two mp3 files into one (combine/join)

Leave a Comment