Spiacenti! Interruzione imprevista dell'applicazione activity_name(package) Riprova

sono uno studente di ICD a bari e sto imparando a sviluppare con android, per la teoria sto utilizzando il buon libro dell'apogeo e, arrivati al capitolo 04, quello per la gestione di più attività con le intent mi propone un esempio ma nell'emulatore mi compare una schermata con scritto: "Spiacenti! Interruzione imprevista dell'applicazione LyfecicleActivitytest (processoit.apogeo.cap04.LifeCycleActivityTest).Ri prova" con un tasto che mi consente di terminare forzatamente l'applcazione, volevo sapere di che genere di problema si tratta e come si potrebbe risolvere, comunque se volete posto anche il codice completo del progetto così potete capire se sono io a sbagliare o può essere un problema di qualche altro genere, vi ringrazio anticipatamente per l'aiuto.

ragazzi perchè non mi rispondete??penso che questo non sia solo un problema mio ma di molti che stanno cominciando a programmare in android!! non riesco ancora a risolverlo...HELP ME PLEASE!!!:S

metti un pò di codice e l'output di logcat

Allora questa è l'attività principale che si chiama LifeCycleActivityTestActivity:

<br /> package it.apogeo.android.cap04.LifeCycleActivityTest;<br /> <br /> import android.app.Activity;<br /> import android.content.Intent;<br /> import android.os.Bundle;<br /> import android.util.Log;<br /> import android.view.View;<br /> import android.view.View.OnClickListener;<br /> import android.widget.Button;<br /> import android.widget.TextView;<br /> <br /> public class LifeCycleActivityTestActivity extends Activity {<br /> <br /> // Valore per il Tag del Log<br /> private final static String ACTIVITY_TAG = "LIFECYCLE_TEST";<br /> <br /> // Contatore che descrive un possibile stato<br /> protected int counter = 0;<br /> <br /> /** Called when the activity is first created. */<br /> @Override<br /> protected void onCreate(Bundle savedInstanceState) {<br /> super.onCreate(savedInstanceState);<br /> // Visualizziamo messaggio di Log<br /> Log.i(ACTIVITY_TAG, "ON_CREATE " + getActivityName());<br /> // Impostiamo il Layout<br /> setContentView(R.layout.main);<br /> // Bottone che permette di visualizzare la seconda Activity<br /> Button navButton = (Button) findViewById(R.id.navButton);<br /> navButton.setOnClickListener(new OnClickListener() {<br /> <br /> @Override<br /> public void onClick(View arg0) {<br /> // Andiamo in modo esplicito alla seconda<br /> // Activity<br /> Log.i(ACTIVITY_TAG, "LAUNCHING SECOND ACTIVITY ");<br /> Intent intent = new Intent(LifeCycleActivityTestActivity.this,<br /> SecondActivity.class);<br /> startActivity(intent);<br /> <br /> }<br /> <br /> <br /> });<br /> // Bottone che permette di terminare l'attività corrente<br /> Button killButton = (Button) findViewById(R.id.killButton);<br /> killButton.setOnClickListener(new OnClickListener() {<br /> @Override<br /> public void onClick(View arg0) {<br /> Log.i(ACTIVITY_TAG, "finish() on " + getActivityName());<br /> finish();<br /> }<br /> });<br /> // Bottone che incrementa il contatore come stato della attività<br /> Button countButton = (Button) findViewById(R.id.countButton);<br /> countButton.setOnClickListener(new OnClickListener() {<br /> @Override<br /> public void onClick(View arg0) {<br /> Log.i(ACTIVITY_TAG, "finish() on " + getActivityName());<br /> counter++;<br /> showCounterState();<br /> }<br /> });<br /> showCounterState();<br /> }<br /> <br /> @Override<br /> protected void onSaveInstanceState(Bundle outState) {<br /> super.onSaveInstanceState(outState);<br /> Log.i(ACTIVITY_TAG, "ON_SAVE_INSTANCE_STATE " + getActivityName());<br /> // Salviamo lo stato del contatore<br /> outState.putInt("counter", counter);<br /> }<br /> <br /> protected void onRestoreInstanceState(Bundle savedInstanceState) {<br /> super.onSaveInstanceState(savedInstanceState);<br /> Log.i(ACTIVITY_TAG, "ON_RESTORE_INSTANCE_STATE " + getActivityName());<br /> counter = savedInstanceState.getInt("counter");<br /> showCounterState();<br /> }<br /> <br /> protected String getActivityName() {<br /> return "FIRST ACTIVITY";<br /> }<br /> <br /> @Override<br /> protected void onDestroy() {<br /> super.onDestroy();<br /> Log.i(ACTIVITY_TAG, "ON_DESTROY " + getActivityName());<br /> }<br /> <br /> @Override<br /> protected void onPause() {<br /> super.onPause();<br /> Log.i(ACTIVITY_TAG, "ON_PAUSE " + getActivityName());<br /> }<br /> <br /> @Override<br /> protected void onRestart() {<br /> super.onRestart();<br /> Log.i(ACTIVITY_TAG, "ON_RESTART" + getActivityName());<br /> }<br /> <br /> @Override<br /> protected void onResume() {<br /> super.onResume();<br /> Log.i(ACTIVITY_TAG, "ON_RESUME " + getActivityName());<br /> }<br /> <br /> @Override<br /> protected void onStart() {<br /> super.onStart();<br /> Log.i(ACTIVITY_TAG, "ON_START " + getActivityName());<br /> }<br /> <br /> @Override<br /> protected void onStop() {<br /> super.onStop();<br /> Log.i(ACTIVITY_TAG, "ON_STOP " + getActivityName());<br /> }<br /> <br /> // Metodo di utilità che permette la visualizzazione dello stato del<br /> // contatore nella TextView<br /> private void showCounterState() {<br /> TextView textView = (TextView) findViewById(R.id.counterValue);<br /> textView.setText(" Counter: " + counter);<br /> }<br /> <br /> }<br />


Questa è l'attività secondaria(SecondActivity):

package it.apogeo.android.cap04.LifeCycleActivityTest;<br /> <br /> <br /> import android.os.Bundle;<br /> import android.widget.TextView;<br /> <br /> public class SecondActivity extends LifeCycleActivityTestActivity {<br /> <br /> @Override<br /> protected void onCreate(Bundle savedInstanceState) {<br /> // TODO Auto-generated method stub<br /> super.onCreate(savedInstanceState);<br /> TextView output = (TextView)findViewById(R.id.output);<br /> String text = getResources().getString(R.string.second_label);<br /> output.setText(text);<br /> }<br /> <br /> protected String getActivityName(){<br /> return "SECOND ACTIVITY";<br /> } <br /> <br /> <br /> }<br />

Questo è il manifest:

<?xml version="1.0" encoding="utf-8"?><br /> <manifest xmlns:android="http://schemas.android.com/apk/res/android" <br /> package="it.apogeo.android.cap04.LifeCycleActivity Test" <br /> android:versionCode="1" <br /> android:versionName="1.0"><br /> - <application android:icon="@drawable/icon" android:label="@string/app_name"><br /> - <activity android:name=".LifeCyleActivityTestActivity" android:label="@string/app_name" android:launchMode="standard"><br /> - <intent-filter><br /> <action android:name="android.intent.action.MAIN" /> <br /> <category android:name="android.intent.category.LAUNCHER" /> <br /> </intent-filter><br /> </activity><br /> - <!-- activity android:name="SecondActivity" android:process=":new_process"></activity<br /> --> <br /> <activity android:name="SecondActivity" /> <br /> </application><br /> <uses-sdk android:minSdkVersion="3" /> <br /> </manifest>

logcat cosa dice così facciamo prima?

L'HO POSTATO MA NON ME LO FANNO VISUALIZZARE FINCHE' UN MODERATORE NON MI DARA' IL CONSENSO CMQ QUESTI SONO GLI ERRORI DEL LOGCAT CHE MI SI PRESENTANO:


06-21 10:53:50.154: ERROR/vold(538): Error opening switch name path '/sys/class/switch/test2' (No such file or directory)
06-21 10:53:50.154: ERROR/vold(538): Error bootstrapping switch '/sys/class/switch/test2' (m)
06-21 10:53:50.154: ERROR/vold(538): Error opening switch name path '/sys/class/switch/test' (No such file or directory)
06-21 10:53:50.154: ERROR/vold(538): Error bootstrapping switch '/sys/class/switch/test' (m)
06-21 10:53:50.284: ERROR/flash_image(544): can't find recovery partition
06-21 10:54:00.475: ERROR/MemoryHeapBase(563): error opening /dev/pmem: No such file or directory
06-21 10:54:00.475: ERROR/SurfaceFlinger(563): Couldn't open /sys/power/wait_for_fb_sleep or /sys/power/wait_for_fb_wake
06-21 10:54:00.574: ERROR/GLLogger(563): couldn't load <libhgl.so> library (Cannot find library)
06-21 10:54:00.684: ERROR/GLLogger(563): couldn't load <libhgl.so> library (Cannot find library)
06-21 10:54:04.554: ERROR/BatteryService(563): Could not open '/sys/class/power_supply/usb/online'
06-21 10:54:04.554: ERROR/BatteryService(563): Could not open '/sys/class/power_supply/battery/batt_vol'
06-21 10:54:04.554: ERROR/BatteryService(563): Could not open '/sys/class/power_supply/battery/batt_temp'
06-21 10:54:05.173: ERROR/EventHub(563): could not get driver version for /dev/input/mouse0, Not a typewriter
06-21 10:54:05.203: ERROR/System(563): Failure starting core service
06-21 10:54:05.203: ERROR/System(563): java.lang.SecurityException
06-21 10:54:05.203: ERROR/System(563): at android.os.BinderProxy.transact(Native Method)
06-21 10:54:05.203: ERROR/System(563): at android.os.ServiceManagerProxy.addService(ServiceM anagerNative.java:146)
06-21 10:54:05.203: ERROR/System(563): at android.os.ServiceManager.addService(ServiceManage r.java:72)
06-21 10:54:05.203: ERROR/System(563): at com.android.server.ServerThread.run(SystemServer.j ava:163)
06-21 10:54:05.213: ERROR/EventHub(563): could not get driver version for /dev/input/mice, Not a typewriter
06-21 10:54:05.213: ERROR/AndroidRuntime(563): Crash logging skipped, no checkin service
06-21 10:54:06.333: ERROR/LockPatternKeyguardView(563): Failed to bind to GLS while checking for account
06-21 10:54:09.484: ERROR/ApplicationContext(563): Couldn't create directory for SharedPreferences file shared_prefs/wallpaper-hints.xml
06-21 10:54:16.215: ERROR/MediaPlayerService(542): Couldn't open fd for content://settings/system/notification_sound
06-21 10:54:16.235: ERROR/MediaPlayer(563): Unable to to create media player
06-21 10:54:10.123: ERROR/ActivityThread(612): Failed to find provider info for android.server.checkin
06-21 10:54:11.443: ERROR/ActivityThread(612): Failed to find provider info for android.server.checkin
06-21 10:54:11.653: ERROR/ActivityThread(612): Failed to find provider info for android.server.checkin
06-21 10:54:15.202: ERROR/AndroidRuntime(716): Uncaught handler: thread main exiting due to uncaught exception
06-21 10:54:15.222: ERROR/AndroidRuntime(716): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{it.apogeo.android.cap04.LifeCycleAct ivityTest/it.apogeo.android.cap04.LifeCycleActivityTest.Life CyleActivityTestActivity}: java.lang.ClassNotFoundException: it.apogeo.android.cap04.LifeCycleActivityTest.Life CyleActivityTestActivity in loader dalvik.system.PathClassLoader@43598b58
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at android.app.ActivityThread.performLaunchActivity(A ctivityThread.java:2194)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at android.app.ActivityThread.handleLaunchActivity(Ac tivityThread.java:2284)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at android.app.ActivityThread.access$1800(ActivityThr ead.java:112)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at android.app.ActivityThread$H.handleMessage(Activit yThread.java:1692)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at android.os.Handler.dispatchMessage(Handler.java:99 )
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at android.os.Looper.loop(Looper.java:123)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at android.app.ActivityThread.main(ActivityThread.jav a:3948)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at java.lang.reflect.Method.invokeNative(Native Method)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at java.lang.reflect.Method.invoke(Method.java:521)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at com.android.internal.os.ZygoteInit$MethodAndArgsCa ller.run(ZygoteInit.java:782)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at com.android.internal.os.ZygoteInit.main(ZygoteInit .java:540)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at dalvik.system.NativeStart.main(Native Method)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): Caused by: java.lang.ClassNotFoundException: it.apogeo.android.cap04.LifeCycleActivityTest.Life CyleActivityTestActivity in loader dalvik.system.PathClassLoader@43598b58
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at dalvik.system.PathClassLoader.findClass(PathClassL oader.java:243)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at java.lang.ClassLoader.loadClass(ClassLoader.java:5 73)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at java.lang.ClassLoader.loadClass(ClassLoader.java:5 32)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at android.app.Instrumentation.newActivity(Instrument ation.java:1097)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): at android.app.ActivityThread.performLaunchActivity(A ctivityThread.java:2186)
06-21 10:54:15.222: ERROR/AndroidRuntime(716): ... 11 more


GRAZIE PER L'AIUTO:D

Problema risolto!!! Nel manifest non dichiaravo bene tutte le attività con le relative label e non trovandole mi dava errore a run-time!!! roftl