是否捕获了StreamCorruptedException？

时间：2013-03-02 06:46:07

标签： android object serialization storage

我无法将对象存储到设备存储中。起初我得到了一个NotSerializableException，所以我将对象设置为Serializable，然后现在在try {} catch {}块中它抛出一个StreamCorruptedException，我认为它指的是in = new ObjectInputStream(byteArray);行。因此，列表未填充。我可以填充try {} catch {}块之外的列表，但这会使列表的对象存储到设备上的目的失败。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

1 个答案:

答案 0 :(得分：0)

删除所有ByteArrayInput / OutputStreams，转换为String，String.getBytes（）调用，以及其他所有不直接调用writeObject（）的对象，以及要序列化的对象，直接连接到FileOutputStream或者相反，从直接连接到FileInputStream的ObjectInputStream直接读取您想要的对象。

您在三个或四个不同的点破坏数据。即使没有破坏数据，也没有任何实际的需要。

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