La mia prima input/output app va in crash e non capisco perchè!!

ciao a tutti!

sono nuovo nel mondo della programmazione android ed ho provato a seguire qualche tutorial per creare un'applicazione di prova per iniziare dalle basi!!

ho creato una semplice app nella quale inserisci nome e cognome e ti restituisce in una nuova activity i valori inseriti, il problema è che quando premo il tasto invia l'app va in crash e non riesco a capirne il motivo!

vi posto il codice, magari potete aiutarmi!

src/MainActivity.java

package com.example.helloapi8; import java.text.Normalizer.Form; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; public class MainActivity extends Activity implements OnClickListener{ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final Button button = (Button) findViewById(R.id.form_button); button.setOnClickListener(this); } public void onClick(View v) { //recuperiamo i dati dalla form final EditText edit_name = (EditText)findViewById(R.id.edit_name); final EditText edit_lastname = (EditText)findViewById(R.id.edit_lastname); //creiamo un oggetto bundle ovvero un associazione nome-dati Bundle bundle = new Bundle(); //mettiamo i dati recuperati nell'oggetto bundle bundle.putString("name", edit_name.getText().toString()); bundle.putString("lastname", edit_lastname.getText().toString()); //creiamo l'intento per la chiamata dell'activity Form.class Intent intent = new Intent(this, Form.class); //associamo all'intento il bundle intent.putExtras(bundle); //lanciamo l'activity startActivity(intent); } } 

res/layout/activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" > <TextView android:id="@+id/lbltop" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:layout_marginTop="16dp" android:text="@string/lbltop" /> <TextView android:id="@+id/lblnome" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="42dp" android:text="@string/lblnome" /> <EditText android:id="@+id/edit_name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_below="@+id/lblnome" android:ems="10" > <requestFocus /> </EditText> <TextView android:id="@+id/lblcognome" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_below="@+id/edit_name" android:layout_marginTop="14dp" android:text="@string/lblcognome" /> <EditText android:id="@+id/edit_lastname" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_below="@+id/lblcognome" android:ems="10" /> <Button android:id="@+id/form_button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/edit_lastname" android:layout_centerHorizontal="true" android:layout_marginTop="22dp" android:text="@string/form_button" /> </RelativeLayout> 

/src/Form.java

package com.example.helloapi8; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; public class Form extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_form); final TextView text_name = (TextView) findViewById(R.id.lblvnome2); final TextView text_lastname = (TextView) findViewById(R.id.lblvcognome2); Bundle bundle = this.getIntent().getExtras(); text_name.setText(bundle.getString("name")); text_lastname.setText(bundle.getString("lastname")); } } 

res/activity/activity_form.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" > <TextView android:id="@+id/lblvnome" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:layout_marginTop="20dp" android:text="@string/lblvnome" /> <TextView android:id="@+id/lblvnome2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_below="@+id/lblvnome" android:layout_marginTop="16dp" android:text="@string/lblvnome2" /> <TextView android:id="@+id/lblvcognome" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_below="@+id/lblvnome2" android:layout_marginTop="15dp" android:text="@string/lblvcognome" /> <TextView android:id="@+id/lblvcognome2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_below="@+id/lblvcognome" android:layout_marginTop="20dp" android:text="@string/lblvcognome2" /> </RelativeLayout> 

res/values/Strings.xml

<resources> <string name="app_name">Applicazione Prova</string> <string name="menu_settings">Impostazioni</string> <string name="title_activity_main">Applicazione</string> <string name="lblnome">Inserisci il tuo nome</string> <string name="lblcognome">Inserisci il tuo cognome</string> <string name="lbltop">Premere invio per inviare i dati</string> <string name="form_button">Invia</string> <string name="hello_world">Hello world!</string> <string name="title_activity_form">Form</string> <string name="lblvnome">Nome inserito</string> <string name="lblvnome2"></string> <string name="lblvcognome">Cognome Inserito</string> <string name="lblvcognome2"></string> </resources>

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.helloapi8" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="15" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" android:label="@string/title_activity_main" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".Form" android:label="@string/title_activity_form" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>

una volta premuto il tasto avvio purtroppo l'applicazione va in crash e non capisco perchè...potete aiutarmi?

grazie!!