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POAndroid: ClassNotFoundException when passing serializable object to Activity
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  1. POAndroid: ClassNotFoundException when passing serializable object to Activity
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    copied!<p>I have a few crash report logs from android market similar to this:</p> <pre><code>Exception class: java.lang.ClassNotFoundException Source method: PathClassLoader.findClass() java.lang.RuntimeException: Unable to start activity ComponentInfo{my.app.package/my.app.package.MyActivity}: java.lang.RuntimeException: Parcelable encounteredClassNotFoundException reading a Serializable object (name = my.app.package.a.ae) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2833) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2854) at android.app.ActivityThread.access$2300(ActivityThread.java:136) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2179) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:143) at android.app.ActivityThread.main(ActivityThread.java:5068) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:521) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.RuntimeException: Parcelable encounteredClassNotFoundException reading a Serializable object (name = my.app.package.a.ae) at android.os.Parcel.readSerializable(Parcel.java:1951) at android.os.Parcel.readValue(Parcel.java:1822) at android.os.Parcel.readMapInternal(Parcel.java:2008) at android.os.Bundle.unparcel(Bundle.java:208) at android.os.Bundle.getBundle(Bundle.java:1078) at android.app.Activity.onRestoreInstanceState(Activity.java:861) at android.app.Activity.performRestoreInstanceState(Activity.java:835) at android.app.Instrumentation.callActivityOnRestoreInstanceState(Instrumentation.java:1135) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2811) ... 11 more Caused by: java.lang.ClassNotFoundException: my.app.package.a.ae at java.lang.Class.classForName(Native Method) at java.lang.Class.forName(Class.java:235) at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:2590) at java.io.ObjectInputStream.readNewClassDesc(ObjectInputStream.java:1846) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:826) at java.io.ObjectInputStream.readNewObject(ObjectInputStream.java:2066) at java.io.ObjectInputStream.readNonPrimitiveContent(ObjectInputStream.java:929) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:2285) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:2240) at android.os.Parcel.readSerializable(Parcel.java:1945) ... 19 more Caused by: java.lang.NoClassDefFoundError: my.app.package.a.ae ... 29 more Caused by: java.lang.ClassNotFoundException: my.app.package.a.ae in loader dalvik.system.PathClassLoader[.] at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243) at java.lang.ClassLoader.loadClass(ClassLoader.java:573) at java.lang.ClassLoader.loadClass(ClassLoader.java:532) ... 29 more </code></pre> <p>Please note that I am using proguard -> that's why the "missing" class name is "a.ae".<br> Actually, "a.ae" is the name proguard gave to the class "MyObject", which is shown below. </p> <p>Any ideia on why this happens? </p> <p>I don't think it has to do with proguard, because if it was a problem caused by proguard class renaming, it should happen all times and I would be able to reproduce this issue myself.</p> <p>Does it have to do with passing a serializable object to MyActivity? <br/> In MyActivity I have <br/></p> <pre><code>public void onCreate(Bundle savedInstanceState) { myObj = (MyObject) getIntent().getSerializableExtra("nameOfMyObject"); //here I am trying to read myObj's properties and app seems to crash here </code></pre> <p>}</p> <p><br/></p> <p>MyObject is just an entity with several types of class members, ex:<br> public class MyObject implements Serializable {</p> <pre><code> /** Generated serialVersionUID */ static final long serialVersionUID = -267025879233327409L; static final String CONSTANT1 = "xpto"; LinkedHashMap&lt;String, Object&gt; components; ArrayList&lt;String&gt; prop1; (...) } </code></pre> <p>I am starting MyActivity with:</p> <pre><code>MyObject obj = new MyObj(stuff); Intent intent; intent = new Intent(CurrentActivity.this, MyActivity.class); intent.putExtra("nameOfMyObject", obj); CurrentActivity.this.startActivity(intent); </code></pre> <p>Do you think it has to do with the way the object is being passed (as a serializable extra)?<br> In the case that I don't find any other solution I think I will "serialize" the object myself to a String and then pass the String extra. What do you think about this?</p> <p>EDIT: I have tried to reproduce this issue, without success, in the emulator and in the following devices: </p> <p>-Motorola Milestone 2 Android 2.2<br> -Samsung Galaxy Tab Android 2.2<br> -Vodafone 845 Android 2.1<br> -HTC Tatoo Android 1.6<br> -Xperia X10 Android 1.6<br> -Nexus One Android 2.2<br> -Google G1 Android 1.5 </p> <p>Any new ideas?</p>
 

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