我正在尝试将我自己的消息类从活动传递到另一个活动,因为我正在使用 parcelable。在尝试通过捆绑包时
Activity1 - 传递捆绑包
Intent i = new Intent(getApplicationContext(), Activity2.class);
Bundle b=new Bundle();
b.putParcelable("FolderList", mainMP3List)); //***mainMP3List is MusicFolder object***
i.putExtras(b);
startActivityForResult(i, 100);
Activity2 - 获取捆绑包
if(b.containsKey("FolderList"))
mainMP3List = b.getParcelable("FolderList");//Error is the here (readBundle: bad magic number)
我无法从第二个活动中访问它们我收到了这个错误
Bundle : readBundle: 坏幻数
import java.util.ArrayList;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
public class MusicFolder implements Parcelable{
private ArrayList<SongsNameList> songsList=new ArrayList<SongsNameList>();
private ArrayList<MusicFolder> listOfFolders=new ArrayList<MusicFolder>();
public ArrayList<SongsNameList> getSongsList() {
return songsList;
}
public void addSongInList(SongsNameList song) {
this.songsList.add(song);
}
public ArrayList<MusicFolder> getListOfFolders() {
return listOfFolders;
}
public void addFolderInList(MusicFolder folder) {
this.listOfFolders.add(folder);
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
//dest.writeString(category);
Bundle b = new Bundle();
b.putParcelableArrayList("songs", songsList);
b.putParcelableArrayList("folders", listOfFolders);
dest.writeBundle(b);
}
public static final Parcelable.Creator<MusicFolder> CREATOR =
new Parcelable.Creator<MusicFolder>() {
public MusicFolder createFromParcel(Parcel in) {
MusicFolder category = new MusicFolder();
//category.listOfFolders = in.readString();
Bundle b1 = in.readBundle(SongsNameList.class.getClassLoader());
category.songsList = b1.getParcelableArrayList("songs");
Bundle b2 = in.readBundle(MusicFolder.class.getClassLoader());
category.listOfFolders = b2.getParcelableArrayList("folders");
return category;
}
@Override
public MusicFolder[] newArray(int size) {
return new MusicFolder[size];
}
};
}