microg/GmsCore · error · IllegalStateException

Value is not a int.

Error message

Value is not a int.

What it means

Format guard in fitness Value.asInt: the Value's format is not FORMAT_INT32, so Float.floatToRawIntBits on the stored value would be meaningless. It fires when the accessor does not match the field's data format.

Source

Thrown at play-services-fitness/src/main/java/com/google/android/gms/fitness/data/Value.java:96

    }

    /**
     * Returns the value of this object as a float.
     *
     * @throws IllegalStateException If this {@link Value} does not correspond to a {@link com.google.android.gms.fitness.data.Field#FORMAT_FLOAT}
     */
    public float asFloat() {
        if (format != FORMAT_FLOAT) throw new IllegalStateException("Value is not a float.");
        return value;
    }

    /**
     * Returns the value of this object as a int.
     *
     * @throws IllegalStateException If this {@link Value} does not correspond to a {@link com.google.android.gms.fitness.data.Field#FORMAT_INT32}
     */
    public int asInt() {
        if (format != FORMAT_INT32) throw new IllegalStateException("Value is not a int.");
        return Float.floatToRawIntBits(this.value);
    }

    /**
     * Returns the value of this object as a string.
     *
     * @throws IllegalStateException If this {@link Value} does not correspond to a {@link com.google.android.gms.fitness.data.Field#FORMAT_STRING}
     */
    @NonNull
    public String asString() {
        if (format != FORMAT_STRING) throw new IllegalStateException("Value is not a string.");
        if (stringValue == null) return "";
        return stringValue;
    }

    /**
     * Clears any value currently associated with the given {@code key} in the map. This method can be used only on map values.
     *

View on GitHub (pinned to 157c9d86ac)

Solutions

1. Verify getFormat() == Field.FORMAT_INT32 before calling asInt()
2. Read the value with asFloat()/asString() according to the actual format

When it happens

Trigger: Thrown at play-services-fitness/src/main/java/com/google/android/gms/fitness/data/Value.java:96 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of microg/GmsCore@157c9d86ac (2026-09-06). Data as JSON: /api/errors/30b5293edaa65790. Report an issue: GitHub.