问题
when saving an object with LinkedList on android API 10 I obtain an error:
08-10 14:37:45.091: E/AndroidRuntime(29845): FATAL EXCEPTION: Thread-17 08-10 14:37:45.091: E/AndroidRuntime(29845): java.lang.IllegalArgumentException: no char field 'exponential' 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.EmulatedFields.put(EmulatedFields.java:459) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.EmulatedFieldsForDumping.put(EmulatedFieldsForDumping.java:83) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.text.DecimalFormatSymbols.writeObject(DecimalFormatSymbols.java:591) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.lang.reflect.Method.invokeNative(Native Method) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.lang.reflect.Method.invoke(Method.java:507) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeHierarchy(ObjectOutputStream.java:1219) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1575) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1847) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1689) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1653) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeFieldValues(ObjectOutputStream.java:1062) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeFields(ObjectOutputStream.java:1008) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.text.DecimalFormat.writeObject(DecimalFormat.java:1215) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.lang.reflect.Method.invokeNative(Native Method) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.lang.reflect.Method.invoke(Method.java:507) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeHierarchy(ObjectOutputStream.java:1219) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1575) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1847) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1689) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1653) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeFieldValues(ObjectOutputStream.java:1143) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:413) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeHierarchy(ObjectOutputStream.java:1241) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeHierarchy(ObjectOutputStream.java:1205) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1575) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1847) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1689) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1653) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeFieldValues(ObjectOutputStream.java:1143) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:413) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeHierarchy(ObjectOutputStream.java:1241) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1575) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1847) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1689) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1653) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.util.LinkedList.writeObject(LinkedList.java:973) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.lang.reflect.Method.invokeNative(Native Method) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.lang.reflect.Method.invoke(Method.java:507) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeHierarchy(ObjectOutputStream.java:1219) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1575) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1847) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1689) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1653) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeFieldValues(ObjectOutputStream.java:1143) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:413) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeHierarchy(ObjectOutputStream.java:1241) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1575) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1847) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1689) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1653) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.util.LinkedList.writeObject(LinkedList.java:973) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.lang.reflect.Method.invokeNative(Native Method) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.lang.reflect.Method.invoke(Method.java:507) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeHierarchy(ObjectOutputStream.java:1219) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1575) 08-10 14:37:45.091: E/AndroidRuntime(29845): at java.io.Ob
I don't where is glitch and I don't think that linkedlist is a problem as it is since API 1, but never the less it doesn't occur on android API 18, any idea where's a problem?
Saving:
FileOutputStream fos = null;
try {
fos = openFileOutput("shelf.obj", Context.MODE_PRIVATE);
ObjectOutputStream out = new ObjectOutputStream(fos);
out.writeObject(listOfShelfs);
out.close();
fos.close();
} catch (FileNotFoundException e) {
//catch
} catch (IOException e) {
//catch
}
object to save:
private static HashMap<String, MessageShelf> listOfShelfs = new HashMap<String, MessageShelf>();
MessageShelf:
public class MessageShelf implements Serializable{
private static final long serialVersionUID = 1L;
public Friend correspodent;
Calendar lastSeen;
Calendar lastSend;
boolean secure;
Queue<MessageList> historyMessagesLists=new LinkedList<MessageList>();
public String lastMessageBody = "";
public Calendar lastDate;}
回答1:
This seems to be Bug 14495: Android 2.3 and 3.0's DecimalFormatSymbols serialization is broken.
来源：https://stackoverflow.com/questions/18162048/saving-object-with-linkedlist-error-on-api-10