java - 如何使具有多个整数和字符串的类可解析？

Question

我有以下Class，我想让它Parcelable问题是，当我通过方法 in.createIntArray() 从 int[] arraySongIntegers 读取 isHidden 和 Counter 变量时，我得到一个空数组大小为 0 且顺便说一句，所有字符串变量都被正确读取。请告诉我如何将所有变量写入 Parcel 并正确读回。

public class Song implements Parcelable{
    public static long firstSongId;
    private long id;
    private String title ,mimeType, artist , dateAdded ,album;
    private int isHidden ,counter;    // 0 is false , 1 is true

 public Song(Parcel in){
    readFromParcel(in);
 }

@Override
public void writeToParcel(Parcel dest, int flags) {
    int[] arraySongIntegers = new int[2];
    arraySongIntegers[0] = isHidden;
    arraySongIntegers[1] = counter;
    dest.writeIntArray(arraySongIntegers);


    dest.writeLong(id);

    List<String> l  = new ArrayList<>();
    l.add(title);
    l.add(artist);
    l.add(album);
    l.add(dateAdded);
    dest.writeStringList(l);

}


public void readFromParcel(Parcel in){

    id = in.readLong();

    int[] arraySongIntegers = in.createIntArray();
    isHidden = arraySongIntegers[0];
    counter = arraySongIntegers[1];

    ArrayList<String> list = in.createStringArrayList();
    title = list.get(0);
    artist = list.get(1);
    album = list.get(2);
    dateAdded = list.get(3);
}

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

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

}

提前致谢。

Answer 1

除了我的评论(没有理由将其设为数组)之外，您还需要按照编写的顺序读取所有内容。首先读取 id 一切都会搞砸。