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I'm trying to start a new Activity from a PreferenceActivity. However, it fails with "Unable to find explicit activity class. Have you declared this activity in your AndroidManifest.xml?" Well, yeah, I declared it: <application [......] android:debuggable="true"> <activity android:name=".AlarmSettings" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".FlashLightActivity"></activity> <receiver android:name="AlarmReceiver" android:process=":remote" > </receiver> </application> AlarmSettings is my PreferenceActivity. AlarmSettings calls FlashLightActivity this way: Intent i = new Intent(AlarmSettings.this, FlashLightActivity.class); startActivity(i); And this is FlashLightActivity: public class FlashLightActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.flashlight); } } ... I don't know what to do. Any ideas?

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