How rebuild only one module in project Android Studio

Eclipse update ADT 17 Android Emulator error: E/AndroidRuntime(370): java.lang.NoClassDefFoundError: com.google.ads.AdView

Solution:
-right click on the project in project tree and select Project properties
-select Java Build Path
-select TAB Order and Export
-check GoogleAdMobAdsSdk-4.0.4.jar (or your version SDK)
-press OK
-clean project by menu Project -> Clean
-rebuild project (Project - Build Automatically)

How add GoogleAdMobAdsSdk....jar to project:
-right click on the project in project tree and select Project properties
-select Java Build Path
-select TAB Libraries
-press the button Add External JARs...
-select your version GoogleAdMobAdsSdkXXX.jar what you can using
-OK
-OK
-clean project
-rebuild project

You have to add constructor!

    public static class YourFragment extends Fragment {
    //you have to add constructor!!!!!	
    public YourFragment(){}

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            View view = inflater.inflate(R.layout.activity_main, container, false);

            return view;
        }   

    }

onSaveInstanceState, onRestoreInstanceState life cycle if screen orientation changed from log file.

// starts activity
15:27:12.801: INFO/onCreate(1828): onCreate()
15:27:12.811: INFO/onStart(1828): onStart()
15:27:12.821: INFO/onResume(1828): onResume()
// activity is running 

15:27:33.651: DEBUG/dalvikvm(307): GC_EXPLICIT freed 186K, 53% 
free 2770K/5831K, external 981K/1038K, paused 99ms

// change emulator state Ctrl+F11 landscape, portrait
15:27:40.427: INFO/ActivityManager(74): Config changed: 
{ scale=1.0 imsi=310/260 loc=en_US touch=3 keys=2/1/2 nav=3/1 orien=2 layout=18 uiMode=17 seq=64}

// saved all variable values if need
15:27:40.581: INFO/onSaveInstanceState(1828): onSaveInstanceState()

15:27:40.602: INFO/onPause(1828): onPause()
15:27:40.612: INFO/onStop(1828): onStop()
15:27:40.631: INFO/onDestroy(1828): onDestroy()

// activity goes back to onCreate !!!!!!!!!
15:27:40.692: INFO/onCreate(1828): onCreate()
15:27:40.701: INFO/onStart(1828): onStart()

// restore all saved values of variables 
15:27:40.711: INFO/onRestoreInstanceState(1828): onRestoreInstanceState()
// you can using saved values by onSaveInstanceState() in onResume
15:27:40.721: INFO/onResume(1828): onResume()

Diagram of life cycle onSaveInstanceState, onRestoreInstanceState

[caption id="attachment_1169" align="alignleft" width="229" caption="Life cycle onRestoreInstanceState"][/caption]

Samsung S6102 Galaxy Y Duos umožňuje pracovat se dvěma aktivními SIM kartami a má GPS navigaci. Cena cca 4.500 korun / léto 2012.

Displej
Rozlišení displeje 320 x 240
Velikost displeje 3.14 "
Počet barev 262000
Rozměry 104 mm x 60 mm x 11.5 mm
Fotoaparát 3 Mpix, natačení videosekvencí
Operační system Android 2.3 (Gingerbread)
Procesor 832 MHz
Funkce Dual sim, Změny velikosti písma, Java, Internetový prohlížeč Přehrávání MP3, jack 3,5, Psaní SMS a e-mailů Multimediální zprávy MMS, Dlouhé SMS, Emailový prohlížeč, Kontakty a volání Hlasité handsfree, MP3/WMA/AAC vyzvánění, Skupiny volajících, Baterie
Typ baterie Li-Ion 1300 mAh
Doba hovoru 370 min
Pohotovostní doba 440 hodin
Uživatelská paměť 160 MB
Datové funkce GPS modul, WiFi, Bluetooth, GPRS, EDGE, Hardwarový modem
Aplikace Diktafon, Kalendář, FM rádio, Záznamník hovoru, Hry v telefonu, Kalkulačka, Budík
Mobilní telefony Samsung mají velmi dobrý poměr KVALITA / CENA

Example source code for Android developers how create array of strings in *.xml file.
You can using array of strings in Spinner ( combobox - dropdown list ) or ListView etc.

<resources>
    <string-array name="colors">
        <item>red</item>
        <item>orange</item>
        <item>yellow</item>
        <item>green</item>
        <item>blue</item>
    </string-array>
</resources>