尝试读取Parcel String []的NullPointerException

Question

当我尝试String[]从Parcel创建对象时回读a 时,我收到NullPointerException .这是我的代码:

@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);
}

所以indoorMaps是我的类的一个属性,它是一个String[],但我得到了NullPointerException.我查看了开发人员的文档,但那里什么也没有.我按照本教程,他们readStringArray在那里使用.

有什么建议？谢谢

Answer 1

你在打电话时给出Parcel一个null数组readStringArray.要使它工作,你必须初始化indoorMaps.你可能想要createStringArray.