CODEWITHSUNDEEP
javaandroidwarningsandroid-resources
Benjamin Basmaci
Benjamin Basmaci

Reputation: 2567

"Numeric overflow in expression” when using android resources

I've declared two integer resources as such:

<resources>
    <integer name="COLUMNS">5</integer>
    <integer name="ROWS">4</integer>
</resources>

When I try to calculate the resulting number of cells (0 based) like this:

R.integer.COLUMNS * R.integer.ROWS-1

I get the warning Numeric overflow in expression

Can anyone explain to me why this warning occurs and if its valid or even dangerous (crash, buffer overflow etc.)?

Android Studio 3.3 Build #AI-182.5107.16.33.5199772, built on December 25, 2018 JRE: 1.8.0_152-release-1248-b01 amd64 JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o Windows 10 10.0

Upvotes: 0

Views: 101

Answers (1)

forpas
forpas

Reputation: 164139

R.integer.COLUMNS is the integer id of the resource and not the value of the resource.
You can get the value of the resource with:

getResources().getInteger(R.integer.COLUMNS)

Upvotes: 1

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