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POAndroid: Fatal Exception (NotSerializableException) when quitting an activity that serializes objects in onSave/onRecall
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copied!<p>I am developing an app that uses some custom classes as members. I have implemented serialization/de-serialization in the onSaveInstanceState and onRestoreInstanceState methods. </p> <p>It all works fine when rotating the screen (app is destroyed and re-created) and my objects are restored. However, when pressing the home button, the app crashes in the onPause method (which I have not modified)...</p> <p>Any clue as to what's happening?</p> <p>Here's a code sample that reproduces the issue</p> <pre><code>import java.io.Serializable; import android.app.Activity; import android.os.Bundle; import android.util.Log; public class InvestigateError extends Activity { private static final String LOG_TAG = "MYERROR"; protected ShowInfo myShowInfo; protected class ShowInfo implements Serializable { private static final long serialVersionUID = 1L; public String title; } public void populateMembers() { myShowInfo = new ShowInfo(); myShowInfo.title = "Was I serialized???"; } /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); if(savedInstanceState == null) populateMembers(); Log.d(LOG_TAG,"Activity created"); } /* Save members */ @Override public void onSaveInstanceState(Bundle outState) { Log.d(LOG_TAG,"__ SAVEINSTANCE __"); outState.putSerializable("myshowInfo", myShowInfo); super.onSaveInstanceState(outState); } /* Restore members */ @Override public void onRestoreInstanceState(Bundle savedInstanceState) { super.onRestoreInstanceState(savedInstanceState); Log.d(LOG_TAG,"__ RECALLINSTANCE __"); myShowInfo = (ShowInfo) savedInstanceState.getSerializable("myshowInfo"); Log.d(LOG_TAG,"string from object: " + myShowInfo.title); } @Override protected void onDestroy() { Log.d(LOG_TAG,"__ DESTROY __"); super.onDestroy(); } @Override protected void onPause() { Log.d(LOG_TAG,"__ PAUSE __"); super.onPause(); } @Override protected void onStop() { Log.d(LOG_TAG,"__ STOP __"); super.onStop(); } } </code></pre> <p>Here's the beginning of the stack trace</p> <blockquote> <p>java.lang.RuntimeException: Parcelable encountered IOException writing serializable object (name = com.esquared.InvestigateError.InvestigateError$ShowInfo)</p> <blockquote> <p>at android.os.Parcel.writeSerializable(Parcel.java:1160)</p> <p>at ndroid.os.Parcel.writeValue(Parcel.java:1114)</p> <p>at android.os.Parcel.writeMapInternal(Parcel.java:479)</p> <p>...</p> </blockquote> </blockquote>

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