cellsResponse.primaryCellList[0] returns null

[malekguemri]

I get "Invalid value: Valid value range is empty: 0" when invoking "CellType currentCellInFirstChip = cellsResponse.primaryCellList[0];"

[malekguemri]

@eslamfaisal

[onghuisheng]

getting the same issue as well, happens only in release mode, debug works fine. @eslamfaisal

[onghuisheng]

I get "Invalid value: Valid value range is empty: 0" when invoking "CellType currentCellInFirstChip = cellsResponse.primaryCellList[0];"

Found the fix, seems like the build shrinker for Android's release build also shrinks property names for the converted Json properties in the library thus causing calls from fromJson() in the library to de-serialize incorrectly.

Modify build.gradle in android\app folder:

android {
    buildTypes {
        release {
            ...

            // Enables code shrinking, obfuscation, and optimization for only
            // your project's release build type.
            minifyEnabled true

            // Enables resource shrinking, which is performed by the
            // Android Gradle plugin.
            shrinkResources true

            // Includes the default ProGuard rules files that are packaged with
            // the Android Gradle plugin. To learn more, go to the section about
            // R8 configuration files.
            proguardFiles getDefaultProguardFile(
                    'proguard-android-optimize.txt'),
                    'proguard-rules.pro'
        }
    }
    ...
}

Add a new proguard-rules.pro file with the following content in the same directory as build.gradle @ android\app

# Gson uses generic type information stored in a class file when working with fields. Proguard
# removes such information by default, so configure it to keep all of it.
-keepattributes Signature

# Gson specific classes
-keep class sun.misc.Unsafe { *; }

# Application classes that will be serialized/deserialized over Gson
-keep class com.airfore.cell_info.** { *; } # This line fixes the serialization issues

Structure should now look like: