Using "id" as requestCode for "startActivityForResult" from FragmentActivity

Question

Android Docs say in about ID XML resource:

A unique resource ID defined in XML. [...] which you can use as [...] unique integer for use in your application code (for example, as an ID for a dialog or a result code).

I created request in ids.xml

<item name="request" type="id" />

Its value is -1000003. I want to use it as requestCode for startActivityForResult from FragmentActivity. But as it is described here, requestCode must be of 16 bits, meaning the range is from 0 to 65535. So the value of request is not valid (it is negative and also exceeds bounds range). and using it causes this error:

java.lang.IllegalArgumentException: Can only use lower 16 bits for requestCode

Although I can use arbitrary valid integer, but its uniqueness may be violated during time of application maintaining/developing. Is there a way to solve this problem?

The error is right, you can use it as `result code` (as documentation says), not as `requestCode ` — Vladyslav Matviienko, Feb 12 '19 at 07:15
@VladyslavMatviienko Yes, but I want to be sure that my requestCode is unique. — hasanghaforian, Feb 12 '19 at 07:16
@VladyslavMatviienko Today I use an arbitrary `requestCode` and after debugging found that its value was the same the value of another `requestCode` which was set in another file. — hasanghaforian, Feb 12 '19 at 07:35
Just use some `Constants.java` class, where you just define all the request codes to be sure they are unique — Vladyslav Matviienko, Feb 12 '19 at 07:37
@VladyslavMatviienko Yes, it seems it is the only way. Thank you. — hasanghaforian, Feb 12 '19 at 07:38

score 0 · Answer 1 · answered Feb 12 '19 at 07:11

0

Your value is a negative number but range is of positive numbers only. This error is might be because of this reason

answered Feb 12 '19 at 07:11

Kartika Vij

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I know that. But also it exceeds bounds range. – hasanghaforian Feb 12 '19 at 07:13

Using "id" as requestCode for "startActivityForResult" from FragmentActivity

1 Answers1