當我從Parcel創建對象時,我正在嘗試讀回String[]
時,出現NullPointerException。這裏是我的代碼:NullPointerException嘗試讀取包裹字符串[]
@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是我的類的屬性,它String[]
,但我得到的NullPointerException。我已經檢查了dev's documentation,但那裏什麼也沒有。 我跟着this tutorial,他們在那裏使用readStringArray
。
有什麼建議嗎?謝謝
請問您可以添加堆棧跟蹤與突出顯示的行在它拋出的代碼NullPointerException –
NullPointerException拋出此鏈接:in.readStringArray(indoorMaps); – marimaf