我无法将对象存储到设备存储中。起初我得到 aNotSerializableException所以我使对象 Serializable 并且现在在try {} catch {}块中它正在抛出StreamCorruptedException我认为指向的行in = new ObjectInputStream(byteArray);。结果，该列表没有被填充。我可以在块之外填充列表，try {} catch {}但这会破坏将列表对象存储到设备上的目的。以下是相关代码：
public class MainListFragment extends ListFragment implements Serializable {
OnListSelectedListener mCallback;
public transient ObjectStorage mainObjectList = new ObjectStorage(); // creates
// the
// list
// of
// objects
SharedPreferences mPrefs;
int mCurrentPosition = -1;
// The container Activity must implement this interface so the frag can
// deliver messages
public interface OnListSelectedListener {
/** Called by ListFragment when a list item is selected */
public void onItemSelected(int position, String schedulename,
String[] ampm, boolean[] days, int[] times, boolean vibrate);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public void onStart() {
super.onStart();
updateStorage();
ByteArrayInputStream byteArray = new ByteArrayInputStream(mPrefs
.getString("myobject", "").getBytes());
ObjectInputStream in;
try {
in = new ObjectInputStream(byteArray);
ObjectStorage updatedStorageList = (ObjectStorage) in.readObject();
Log.i("mydebug", "Populating list with storage");
CustomListAdapter adapter = new CustomListAdapter(getActivity(),
R.layout.listview_item_row, updatedStorageList);
// setListAdapter(new ArrayAdapter<String>(getActivity(), layout,
// arraylist));
setListAdapter(adapter);
setListShown(true);
} catch (StreamCorruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void updateStorage() {
getActivity();// used for MODE_PRIVATE
// store object list into android system
mPrefs = getActivity().getPreferences(Context.MODE_PRIVATE);
SharedPreferences.Editor ed = mPrefs.edit();
ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream();
ObjectOutputStream out;
try {
Log.i("mydebug", "Updating object storage");
out = new ObjectOutputStream(arrayOutputStream);
out.writeObject(mainObjectList);
out.close();
arrayOutputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
ed.putString("myobject", arrayOutputStream.toString());
ed.commit();
}
}
以及 LogCat 信息：
03-02 00:41:07.857: I/mydebug(12435): TEMPMAINFRAG: MainListFragment{41dfe598 id=0x7f070028}
03-02 00:41:07.857: I/mydebug(12435): 1
03-02 00:41:07.857: D/AbsListView(12435): Get MotionRecognitionManager
03-02 00:41:07.877: D/AbsListView(12435): Get MotionRecognitionManager
03-02 00:41:07.877: I/mydebug(12435): Updating object storage
03-02 00:41:07.877: W/System.err(12435): java.io.StreamCorruptedException
03-02 00:41:07.877: W/System.err(12435): at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:2106)
03-02 00:41:07.877: W/System.err(12435): at java.io.ObjectInputStream.<init>(ObjectInputStream.java:372)
03-02 00:41:07.877: W/System.err(12435): at com.example.android.fragments.MainListFragment.onStart(MainListFragment.java:94)
03-02 00:41:07.877: W/System.err(12435): at android.support.v4.app.Fragment.performStart(Fragment.java:1332)
03-02 00:41:07.877: W/System.err(12435): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:906)
03-02 00:41:07.877: W/System.err(12435): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1080)
03-02 00:41:07.877: W/System.err(12435): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062)
03-02 00:41:07.877: W/System.err(12435): at android.support.v4.app.FragmentManagerImpl.dispatchStart(FragmentManager.java:1815)
03-02 00:41:07.877: W/System.err(12435): at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:518)
03-02 00:41:07.877: W/System.err(12435): at com.example.android.fragments.MainActivity.onStart(MainActivity.java:104)
03-02 00:41:07.877: W/System.err(12435): at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1178)
03-02 00:41:07.887: W/System.err(12435): at android.app.Activity.performStart(Activity.java:5058)
03-02 00:41:07.887: W/System.err(12435): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2061)
03-02 00:41:07.887: W/System.err(12435): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2113)
03-02 00:41:07.887: W/System.err(12435): at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3554)
03-02 00:41:07.887: W/System.err(12435): at android.app.ActivityThread.access$800(ActivityThread.java:139)
03-02 00:41:07.887: W/System.err(12435): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1230)
03-02 00:41:07.887: W/System.err(12435): at android.os.Handler.dispatchMessage(Handler.java:99)
03-02 00:41:07.887: W/System.err(12435): at android.os.Looper.loop(Looper.java:137)
03-02 00:41:07.887: W/System.err(12435): at android.app.ActivityThread.main(ActivityThread.java:4918)
03-02 00:41:07.887: W/System.err(12435): at java.lang.reflect.Method.invokeNative(Native Method)
03-02 00:41:07.887: W/System.err(12435): at java.lang.reflect.Method.invoke(Method.java:511)
03-02 00:41:07.887: W/System.err(12435): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004)
03-02 00:41:07.887: W/System.err(12435): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771)
03-02 00:41:07.887: W/System.err(12435): at dalvik.system.NativeStart.main(Native Method)
03-02 00:41:07.947: I/Adreno200-EGLSUB(12435): <ConfigWindowMatch:2087>: Format RGBA_8888.
03-02 00:41:08.908: I/mydebug(12435): TEMPMAINFRAG: MainListFragment{41e237f8 id=0x7f070028}
03-02 00:41:08.908: I/mydebug(12435): 1
03-02 00:41:08.918: D/AbsListView(12435): Get MotionRecognitionManager
03-02 00:41:08.928: D/AbsListView(12435): Get MotionRecognitionManager
03-02 00:41:08.938: I/mydebug(12435): Updating object storage
03-02 00:41:08.938: W/System.err(12435): java.io.StreamCorruptedException
03-02 00:41:08.938: W/System.err(12435): at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:2106)
03-02 00:41:08.938: W/System.err(12435): at java.io.ObjectInputStream.<init>(ObjectInputStream.java:372)
03-02 00:41:08.938: W/System.err(12435): at com.example.android.fragments.MainListFragment.onStart(MainListFragment.java:94)
03-02 00:41:08.938: W/System.err(12435): at android.support.v4.app.Fragment.performStart(Fragment.java:1332)
03-02 00:41:08.938: W/System.err(12435): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:906)
03-02 00:41:08.938: W/System.err(12435): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1080)
03-02 00:41:08.938: W/System.err(12435): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062)
03-02 00:41:08.948: W/System.err(12435): at android.support.v4.app.FragmentManagerImpl.dispatchStart(FragmentManager.java:1815)
03-02 00:41:08.948: W/System.err(12435): at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:518)
03-02 00:41:08.948: W/System.err(12435): at com.example.android.fragments.MainActivity.onStart(MainActivity.java:104)
03-02 00:41:08.948: W/System.err(12435): at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1178)
03-02 00:41:08.948: W/System.err(12435): at android.app.Activity.performStart(Activity.java:5058)
03-02 00:41:08.948: W/System.err(12435): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2061)
03-02 00:41:08.948: W/System.err(12435): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2113)
03-02 00:41:08.948: W/System.err(12435): at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3554)
03-02 00:41:08.948: W/System.err(12435): at android.app.ActivityThread.access$800(ActivityThread.java:139)
03-02 00:41:08.948: W/System.err(12435): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1230)
03-02 00:41:08.948: W/System.err(12435): at android.os.Handler.dispatchMessage(Handler.java:99)
03-02 00:41:08.948: W/System.err(12435): at android.os.Looper.loop(Looper.java:137)
03-02 00:41:08.958: W/System.err(12435): at android.app.ActivityThread.main(ActivityThread.java:4918)
03-02 00:41:08.958: W/System.err(12435): at java.lang.reflect.Method.invokeNative(Native Method)
03-02 00:41:08.958: W/System.err(12435): at java.lang.reflect.Method.invoke(Method.java:511)
03-02 00:41:08.958: W/System.err(12435): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004)
03-02 00:41:08.958: W/System.err(12435): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771)
03-02 00:41:08.958: W/System.err(12435): at dalvik.system.NativeStart.main(Native Method)
03-02 00:41:09.178: I/Adreno200-EGLSUB(12435): <ConfigWindowMatch:2087>: Format RGBA_8888.
03-02 00:41:52.326: W/IInputConnectionWrapper(12435): getExtractedText on inactive InputConnection
03-02 00:41:52.326: W/IInputConnectionWrapper(12435): getTextBeforeCursor on inactive InputConnection
03-02 00:41:52.326: W/IInputConnectionWrapper(12435): getSelectedText on inactive InputConnection
03-02 00:41:52.326: W/IInputConnectionWrapper(12435): getTextAfterCursor on inactive InputConnection
03-02 00:41:52.326: W/IInputConnectionWrapper(12435): getExtractedText on inactive InputConnection
03-02 00:41:52.326: W/IInputConnectionWrapper(12435): getTextBeforeCursor on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): getExtractedText on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): getTextBeforeCursor on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): getSelectedText on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): getTextAfterCursor on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): getExtractedText on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): getTextBeforeCursor on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): getSelectedText on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): getTextAfterCursor on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): beginBatchEdit on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): endBatchEdit on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): getExtractedText on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): getTextBeforeCursor on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): getSelectedText on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): getTextAfterCursor on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): beginBatchEdit on inactive InputConnection
03-02 00:41:52.336: W/IInputConnectionWrapper(12435): endBatchEdit on inactive InputConnection