If you use Eclipse, do Project | Clean from the main menu. If you use Ant, run ant clean install. See if one of these clears up your problem.
On Thu, Feb 24, 2011 at 10:28 AM, Premier <a.grum...@gmail.com> wrote: > Hello, > i've created a new android project target 8, with default activity > > I've assigned an id to textview with text "Hello world". > > <?xml version="1.0" encoding="utf-8"?> > <LinearLayout xmlns:android="http://schemas.android.com/apk/res/ > android" > android:orientation="vertical" > android:layout_width="fill_parent" > android:layout_height="fill_parent" > > > <TextView > android:id="@+id/tvProva" > android:layout_width="fill_parent" > android:layout_height="wrap_content" > android:text="@string/hello" > /> > </LinearLayout> > > This is the unique activity > > package it.prova; > > import android.app.Activity; > import android.os.Bundle; > import android.widget.TextView; > > > public class EmptyActivity extends Activity > { > > /** Called when the activity is first created. */ > @Override > public void onCreate(Bundle savedInstanceState) > { > super.onCreate(savedInstanceState); > setContentView(R.layout.main); > > TextView tv = (TextView) findViewById(R.id.tvProva); > tv.setText("Prova "); > } > } > > And this is logcat > > > 02-24 16:09:25.374: ERROR/AndroidRuntime(537): Caused by: > java.lang.NullPointerException > 02-24 16:09:25.374: ERROR/AndroidRuntime(537): at > it.prova.EmptyActivity.onCreate(EmptyActivity.java:22) > 02-24 16:09:25.374: ERROR/AndroidRuntime(537): at > android.app.Instrumentation.callActivityOnCreate(Instrumentation.java: > 1047) > 02-24 16:09:25.374: ERROR/AndroidRuntime(537): at > android.app.ActivityThread.performLaunchActivity(ActivityThread.java: > 2627) > 02-24 16:09:25.374: ERROR/AndroidRuntime(537): ... 11 more > > I'm using sdk r11 and adt v10. > > I think there is a problem with resources. > > Any idea? > > Thanks. > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy _The Busy Coder's Guide to Android Development_ Version 3.4 Available! -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
