由 java.lang.NumberFormatException 引起：无效浮点数：“∞”

Question

I am looking into Fabric Crashlytics to see crashes that my app has, and found this one:

Caused by java.lang.NumberFormatException: Invalid float: "∞" at java.lang.StringToReal.invalidReal(StringToReal.java:63) at java.lang.StringToReal.initialParse(StringToReal.java:164) at java.lang.StringToReal.parseFloat(StringToReal.java:323) at java.lang.Float.parseFloat(Float.java:306)

Code

public static Float parseFloat(String value) {
    return Float.parseFloat(value.replace(",", "."));
}

Please help me understand it.

Answer 1

That's most likely a Float overflow.

If the Float is bigger than it can handle it returns infinity (this also happens dividing by 0). You should add a condition to check if the number is between -Float.MAX_VALUE and Float.MAX_VALUE (Float range goes from 1.40239846 x 10^-45 to 3.40282347 x 10^38)