Error serializable al cargar el navegador web desde mi aplicación
Estoy desarrollando una aplicación.
Esta aplicación contiene 2 clases.
Clase de descubrimiento que implementa serializable.
Clase principal que amplía la actividad.
En la clase principal, llamo al navegador web de Android haciendo clic en el botón en la interfaz de la aplicación. Y este comportamiento genera un crash.
abajo es el código:
MainTest.java
package com.heeere.androiddnssd.discovery;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainTest extends Activity {
android.net.wifi.WifiManager.MulticastLock lock;
private Discovery discovery;
private TextView textView;
/** Called when the activity is first created. */
@SuppressLint("NewApi") @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if ( savedInstanceState == null)
discovery = new Discovery(this);
else
discovery = (Discovery) savedInstanceState.getSerializable("discovery");
setContentView(R.layout.main);
textView = (TextView)this.findViewById(R.id.text);
Button b = (Button)this.findViewById(R.id.button);
b.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
//discovery.setUp();
Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.google.com"));
startActivity(browserIntent);
}
});
android.net.wifi.WifiManager wifi = (android.net.wifi.WifiManager) getSystemService(android.content.Context.WIFI_SERVICE);
lock = wifi.createMulticastLock("mylockthereturn");
lock.setReferenceCounted(true);
lock.acquire();
}
@Override
protected void onSaveInstanceState(final Bundle outState) {
outState.putSerializable("discovery", discovery);
super.onSaveInstanceState(outState);
}
public void updateView () {
String msg = discovery.getMsg();
textView.setText(msg);
}
@SuppressLint("NewApi") @Override
protected void onStop() {
discovery.stop();
lock.release();
super.onStop();
}
}
Discovery.java
package com.heeere.androiddnssd.discovery;
import java.io.IOException;
import java.io.Serializable;
import javax.jmdns.JmDNS;
import javax.jmdns.ServiceEvent;
import javax.jmdns.ServiceListener;
public class Discovery implements Serializable {
private static final long serialVersionUID = 637576886455091135L;
private String type = "_ikunet._tcp.local.";
private String msg="";
private JmDNS jmdns = null;
private ServiceListener listener = null;
private MainTest maintest;
android.os.Handler handler = new android.os.Handler();
public Discovery (MainTest maintest) {
this.maintest = maintest;
setUp();
}
public void setUp() {
try {
jmdns = JmDNS.create();
jmdns.addServiceListener(type, listener = new ServiceListener() {
public void serviceResolved(ServiceEvent ev) {
msg = msg + ev.getInfo().getName()+ "\n";
update();
}
public void serviceRemoved(ServiceEvent ev) {
}
public void serviceAdded(ServiceEvent event) {
jmdns.requestServiceInfo(event.getType(), event.getName(), 1);
}
});
} catch (IOException e) {
//e.printStackTrace();
return;
}
}
public String getMsg() {
return msg;
}
private void update() {
handler.postDelayed(new Runnable() {
public void run() {
maintest.updateView();
}
}, 1);
}
public void stop() {
if (jmdns != null) {
if (listener != null) {
jmdns.removeServiceListener(type, listener);
listener = null;
}
jmdns.unregisterAllServices();
try {
jmdns.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
jmdns = null;
}
}
}
LogCat
09-13 15:08:30.507: E/AndroidRuntime(15775): Uncaught handler: thread main exiting due to uncaught exception
09-13 15:08:30.517: E/AndroidRuntime(15775): java.lang.RuntimeException: Parcelable encountered IOException writing serializable object (name = com.heeere.androiddnssd.discovery.Discovery)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.os.Parcel.writeSerializable(Parcel.java:1131)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.os.Parcel.writeValue(Parcel.java:1085)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.os.Parcel.writeMapInternal(Parcel.java:469)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.os.Bundle.writeToParcel(Bundle.java:1445)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.os.Parcel.writeBundle(Parcel.java:483)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.app.ActivityManagerProxy.activityPaused(ActivityManagerNative.java:1427)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:3106)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.app.ActivityThread.access$2400(ActivityThread.java:119)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1870)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.os.Handler.dispatchMessage(Handler.java:99)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.os.Looper.loop(Looper.java:123)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.app.ActivityThread.main(ActivityThread.java:4363)
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.lang.reflect.Method.invokeNative(Native Method)
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.lang.reflect.Method.invoke(Method.java:521)
09-13 15:08:30.517: E/AndroidRuntime(15775): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
09-13 15:08:30.517: E/AndroidRuntime(15775): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
09-13 15:08:30.517: E/AndroidRuntime(15775): at dalvik.system.NativeStart.main(Native Method)
09-13 15:08:30.517: E/AndroidRuntime(15775): Caused by: java.io.NotSerializableException: android.os.Handler
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1547)
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1854)
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1696)
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1660)
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.io.ObjectOutputStream.writeFieldValues(ObjectOutputStream.java:1153)
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:420)
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.io.ObjectOutputStream.writeHierarchy(ObjectOutputStream.java:1251)
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1587)
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1854)
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1696)
09-13 15:08:30.517: E/AndroidRuntime(15775): at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1660)
09-13 15:08:30.517: E/AndroidRuntime(15775): at android.os.Parcel.writeSerializable(Parcel.java:1126)
09-13 15:08:30.517: E/AndroidRuntime(15775): ... 16 more