Modifier une ListView dans un seul Activity

classe du magivation drawer qui contient une listview

Code:

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public class Contenu_menu extends ActionBarActivity {
 
	DrawerLayout mDrawerLayout;
	ListView mDrawerList;
	ActionBarDrawerToggle mDrawerToggle;
	String mTitle = "";
 
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_contenu_menu);
 
        mTitle = (String) getTitle();
 
        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
 
        mDrawerList = (ListView) findViewById(R.id.drawer_list);
 
        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.drawable.ic_drawer,
        		R.string.drawer_open, R.string.drawer_close){
 
        	@Override
        	public void onDrawerClosed(View drawerView) {
        		getActionBar().setTitle(mTitle);
        		invalidateOptionsMenu();
        	}
 
        	@Override
			public void onDrawerOpened(View drawerView) {
        		getActionBar().setTitle("Select a river");
        		invalidateOptionsMenu();
			}
        };
 
        mDrawerLayout.setDrawerListener(mDrawerToggle);
////////////////////////////////////////////////////////        
        Bundle res = this.getIntent().getExtras();
		if(res != null){
			String moyenne = res.getString("res");
		int inter=Integer.parseInt(moyenne);
 
		  if(inter==0){
	        	ArrayAdapter<String> adapter = new ArrayAdapter<String>(getBaseContext(), R.layout.drawer_list_item,R.array.rivers);
	        	mDrawerList.setAdapter(adapter);
			}	
 
		if(inter==1){
 
			mDrawerList.setAdapter(null);
				ArrayAdapter<String> adapter= new ArrayAdapter<String>(getBaseContext(), R.layout.drawer_list_item,R.array.rivers2);
				//adapter.notifyDataSetChanged();
				mDrawerList.setAdapter(adapter);
			}
 
		}
 
		/*ArrayAdapter<String> adapter = new ArrayAdapter<String>(
				getBaseContext(), R.layout.drawer_list_item, getResources()
						.getStringArray(R.array.rivers));
        mDrawerList.setAdapter(adapter);*/
 
        getActionBar().setHomeButtonEnabled(true);
 
        getActionBar().setDisplayHomeAsUpEnabled(true);
 
        mDrawerList.setOnItemClickListener(new OnItemClickListener() {
 
			@Override
			public void onItemClick(AdapterView<?> parent, View view, int position,
					long id) {
 
				String[] rivers = getResources().getStringArray(R.array.rivers);
 
				mTitle = rivers[position];
 
				RiverFragment rFragment = new RiverFragment();
 
				Bundle data = new Bundle();
 
				data.putInt("position", position);
 
				rFragment.setArguments(data);
 
				android.app.FragmentManager fragmentManager = getFragmentManager();
 
				FragmentTransaction ft = fragmentManager.beginTransaction();
 
				ft.replace(R.id.content_frame, rFragment);
 
				ft.commit();
 
				mDrawerLayout.closeDrawer(mDrawerList);
			}
 
		});
    }
 
    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
    	super.onPostCreate(savedInstanceState);
    	mDrawerToggle.syncState();
    }
 
 
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
 
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
       if(mDrawerToggle.onOptionsItemSelected(item)){
    	   return true;
       }
       return super.onOptionsItemSelected(item);
    }
 
    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
    	boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
    	menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
    	return super.onPrepareOptionsMenu(menu);
    }
}

classe qui contient gridview

Code:

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public class FirstScreen extends Activity {
 
	private ImageSwitcher imageSwitcher;
 
    private int[] gallery = {R.drawable.a, R.drawable.b, R.drawable.c, R.drawable.d, R.drawable.e, R.drawable.f};
 
    private int posit= 0;
 
    private Timer timer = null;
 
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_first_screen);
 
		final TabHost tabHost = (TabHost) findViewById(R.id.tabhost);
        tabHost.setup();
 
        TabSpec spec1 = tabHost.newTabSpec("tab1");
        spec1.setContent(R.id.tab1);
        spec1.setIndicator("Accueil", null);
        tabHost.addTab(spec1);	
 
        TabSpec spec2 = tabHost.newTabSpec("tab2");
        spec2.setContent(R.id.tab2);
        spec2.setIndicator("Menu", null);
        tabHost.addTab(spec2);	
 
        TabSpec spec3 = tabHost.newTabSpec("tab3");
        spec3.setContent(R.id.tab3);
        spec3.setIndicator("Votre commande", null);
        tabHost.addTab(spec3);	
 
        TabSpec spec4 = tabHost.newTabSpec("tab4");
        spec4.setContent(R.id.tab4);
        spec4.setIndicator("Sortir", null);
        tabHost.addTab(spec4);	
 
 
 
        //image
        imageSwitcher = (ImageSwitcher) findViewById(R.id.imageSwitcher);
 
        imageSwitcher.setFactory(new ViewFactory() {
 
            public View makeView() 
            {
                return new ImageView(FirstScreen.this);
            } 
        });
 
        // Set animations http://danielme.com/2013/08/18/diseno-android-transiciones-entre-activities/
        Animation fadeIn = AnimationUtils.loadAnimation(this, R.anim.fade_in);
        Animation fadeOut = AnimationUtils.loadAnimation(this, R.anim.fade_out);
        imageSwitcher.setInAnimation(fadeIn);
        imageSwitcher.setOutAnimation(fadeOut); 
 
 
       //autostart
        timer = new Timer();
        timer.scheduleAtFixedRate(new TimerTask() {
 
        public void run() {
            // avoid exception: "Only the original thread that created a view hierarchy can touch its views"
            runOnUiThread(new Runnable() {
                 public void run() {
                     imageSwitcher.setImageResource(gallery[posit]);
                        posit++;
                        if (posit == 6)
                        {
                            posit = 0;
                        }
                }
            });
        }
 
        }, 0, 2500);
 
 
 
 
        //gridview
   	 GridView gv=(GridView)findViewById(R.id.tab2);
   	 CustomGridAdapter adapter =new  CustomGridAdapter(this);
   	 gv.setAdapter(adapter);
   	//gv.setAdapter(new CustomGridAdapter(FirstScreen.this) );
 
   	gv.setOnItemClickListener(new OnItemClickListener() {
 
		@Override
		public void onItemClick(AdapterView<?> parent, View view, int position,
				long id) {
			String myNum =  String.valueOf(position);
			Intent intent = new Intent(FirstScreen.this, Contenu_menu.class);
			intent.putExtra("res",myNum);
 
 
			startActivity(intent);
 
Toast.makeText(getApplicationContext(),myNum, Toast.LENGTH_LONG).show();
 
		//	Intent intent = new Intent(FirstScreen.this,Contenu_menu.class);
			//intent.putExtra("pos", position);
 
			//startActivity(intent);
 
		}
	});
 
 
	}
 
    }

mon probleme est :je n'arrive pas à afficher la list view de chaque items de gridview