error NotFoundException while trying to retrieve dimension

Question

It's curiously, but I can't get dimen value, so what's wrong? Making Clean or Invalidate caches doesn't help.

dimens.xml:

<dimen name="dialog_width_percent">0.85</dimen>

code:

float percent = context.getResources().getDimension(R.dimen.dialog_width_percent);

Got Resources$NotFoundException

Try to clean and rebuild your project. – Ankita Jul 17 '18 at 13:39 — Ankita, Jul 17 '18 at 13:39
@AbnerEscócio `getActivity().getApplicationContext()` – Konstantin Konopko Jul 17 '18 at 13:41 — Konstantin Konopko, Jul 17 '18 at 13:41

score 1 · Accepted Answer · answered Jul 17 '18 at 13:54

You are not suppose to use float or double as a resource type, check this link: Android float/double resource type

Basically it explains if you want to use this type you will have to do a kind of "hack". As from the orignal post:

 <item name="float" type="dimen" format="float">9.52</item>

Referencing from java

TypedValue typedValue = new TypedValue();
getResources().getValue(R.dimen.my_float_value, typedValue, true);
float myFloatValue = typedValue.getFloat();

Link to android dev site that explains not being able to use float/double: https://developer.android.com/guide/topics/resources/available-resources

Glad it worked! can you set this as the accepted answer? – Nigel Brown Jul 17 '18 at 17:47 — Nigel Brown, Jul 17 '18 at 17:47

score 0 · Answer 2 · answered Jul 17 '18 at 13:45

0

0.85 is not a valid dimen. Use fraction

<fraction name="dialog_width_percent">0.85</fraction>

float percent = context.getResources().getFraction(R.fraction.dialog_width_percent, 1, 1);

answered Jul 17 '18 at 13:45

egoldx

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score 0 · Answer 3 · answered Jul 17 '18 at 13:47

0

Try 0.85dp as follow

<dimen name="dialog_width_percent">0.85dp</dimen>

answered Jul 17 '18 at 13:47

Abner Escócio

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score 0 · Answer 4 · answered Jul 17 '18 at 13:55

0

Dimensions expect dp use fraction instead.

<fraction name="dialog_width_percent" type="fraction">85%</fraction>

You can then call it in your activity like this:

float percent = context.getFraction(R.fraction.dialog_width_percent, 1, 1);

answered Jul 17 '18 at 13:55

hopeman

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error NotFoundException while trying to retrieve dimension

4 Answers4