Java – attempt to read NullPointerException of parcel string []

When I create an object from parcel, when I try to read back a string [], I get a NullPointerException This is my code:

@Override
public void writeToParcel(Parcel out,int flags) {
    out.writeInt(floors);
    out.writeStringArray(indoorMaps);

}

public static final Parcelable.Creator<Building> CREATOR
    = new Parcelable.Creator<Building>() {
    public Building createFromParcel(Parcel in) {
        return new Building(in);
    }

public Building[] newArray(int size) {
    return new Building[size];
}
};

private Building(Parcel in) {   
    floors = in.readInt();
    in.readStringArray(indoorMaps);
}

So indoormaps is the property of my class. It is a string [], but I get NullPointerException I checked dev's documentation, but there was nothing there I followed this tutorial, where they used readstringarray

Any suggestions? thank you

Solution

When calling readstringarray, you are providing an empty array for parcel For it to work, you must initialize indoormaps You may want to create stringarray