Android ClassCastException only in release build

Asked May 09 '16 at 11:44

Active May 09 '16 at 12:21

Viewed 439 times

I have a simple code for get the nicknames from the recipient's list in my Android app:

public void addItemsToSpinner(List<Recipient> list) {
    List<String> nicks = new ArrayList<>();

    for (Recipient recipient: list) {
        nicks.add(recipient.getNickname());
    }
}

It works fine when I try it debug mode, but if I release through Crashlytics Beta, it always crashes. Actually the error is this:

java.lang.ClassCastException: dbu cannot be cast to lh

Any ideas are welcome.

edited May 09 '16 at 12:21

Gaurav

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asked May 09 '16 at 11:44

Herczeg Ádám

What is dbu? What is lh? – Yoann Hercouet May 09 '16 at 11:47
I guess you are using Proguard or something to obfuscate the code, check the mapping to see what classes they are originally. – Yoann Hercouet May 09 '16 at 11:49
You are right! lh is Recipient and dbu is com.google.gson.internal.LinkedTreeMap. I forgot to add the Recipient model class to proguard rules, but I still get error and I don't get why gson is involved. – Herczeg Ádám May 09 '16 at 12:08
Maybe check if LinkedTreeMap requires special rules for Proguard too, nearly every library or plugin needs some modification. – Yoann Hercouet May 09 '16 at 12:10
Yes I know that, I found some rules, but unfortunately nothing changed, except now I can see the class names in the log. – Herczeg Ádám May 09 '16 at 12:20
1

So the error now is: com.google.gson.internal.LinkedTreeMap cannot be cast to com.mypackage.model.Recipient – Herczeg Ádám May 09 '16 at 12:21
Have a look: http://stackoverflow.com/questions/27253555/com-google-gson-internal-linkedtreemap-cannot-be-cast-to-my-class – Yoann Hercouet May 09 '16 at 12:22

Android ClassCastException only in release build

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