How to use Bottom tabActivity in my Activity itself

Question

I want to use bottom tab in my activity,in my old activity itself having some function,without using seperate activity for tab,can i use tab functions in my activity itself,I tried like this.

public class GinfyActivity extends Activity {


    /** Called when the activity is first created. */

    public GridviewAdapter mAdapter;
    private Spinner spinner1;
    public String selectprayer;


    ArrayList<GridviewAdapter> results = new ArrayList<GridviewAdapter>();

    private ArrayList<String> listginfy;
    private ArrayList<Integer> listimage;

    private GridView gridView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.home_ginfy);

        TabHost mTabHost = (TabHost)findViewById(android.R.id.tabhost);

        mTabHost.addTab(mTabHost.newTabSpec("tab_test1").setIndicator("TAB 1").setContent(new Intent(GinfyActivity.this,Audioprayer.class)));
        mTabHost.addTab(mTabHost.newTabSpec("tab_test2").setIndicator("TAB 2").setContent(new Intent(GinfyActivity.this,TTSMeditation.class)));
        mTabHost.addTab(mTabHost.newTabSpec("tab_test3").setIndicator("TAB 3").setContent(new Intent(GinfyActivity.this,TTSList.class)));

        mTabHost.setCurrentTab(0);

        addListenerOnButton();
        addListenerOnSpinnerItemSelection();






        prepareList();


        // prepared arraylist and passed it to the Adapter class
   mAdapter = new GridviewAdapter(this,listginfy, listimage);

        // Set custom adapter to gridview
        gridView = (GridView) findViewById(R.id.gridView1);
        gridView.setAdapter(mAdapter);

        // Implement On Item click listener
        gridView.setOnItemClickListener(new OnItemClickListener() 
        {
            @Override
            public void onItemClick(AdapterView<?> a, View v, int position, long id) {


                if (selectprayer.equals("www.ginfy.com"))
                {

                switch(position)
                { 
                case 0:
                Intent newActivity = new Intent(GinfyActivity.this,MainActivity.class);
                startActivity(newActivity);
                break;

                case 2:
                Intent new1Activity = new Intent(GinfyActivity.this,AndroidTabLayoutActivity.class);
                startActivity(new1Activity);
                break;
                default:
                    Toast.makeText(GinfyActivity.this, "Coming Soon", Toast.LENGTH_LONG).show();
                    }
                }
                else
                {

                    switch(position)
                    {
                    case 0:
                    Intent new2Activity = new Intent(GinfyActivity.this,YourPrayerActivity.class);
                    startActivity(new2Activity);
                    break;

                    case 1:
                    Intent new3Activity = new Intent(GinfyActivity.this,AndroidTabLayoutActivity1.class);
                    startActivity(new3Activity);
                    break;

                    case 3:
                    Intent new4Activity = new Intent(GinfyActivity.this,ExperiencesActivity.class);
                    startActivity(new4Activity);
                    break;
                    default:
                        Toast.makeText(GinfyActivity.this, "Coming Soon", Toast.LENGTH_LONG).show();
                        }


                }
            }
        });
    }




    public void addListenerOnSpinnerItemSelection() {
        {
            spinner1 = (Spinner) findViewById(R.id.spinner1);
            spinner1.setOnItemSelectedListener(new OnItemSelectedListener() 
            {
                public void onItemSelected(AdapterView<?> parent, View view, int position,
                        long id) {

                    spinner1.setSelection(position);
                    //spinnerCapital.setSelection(position);

                    selectprayer = (String) spinner1.getSelectedItem();

                    //Toast.makeText(getBaseContext(), selectprayer, Toast.LENGTH_SHORT).show();
                    //String myStatesCapital = (String) spinnerCapital.getSelectedItem();



                    //tvCapital.setText("My State is " + myState + ".And its Capital is "
                            //+ myStatesCapital);

                }

                public void onNothingSelected(AdapterView<?> parent) {

                }});
        }
        }




    public void addListenerOnButton() {
        spinner1 = (Spinner) findViewById(R.id.spinner1);

    }

    public void prepareList()
    {
        listginfy = new ArrayList<String>();

        listginfy.add("Prayers");
        listginfy.add("Prayer room");
        listginfy.add("God gallery");
        listginfy.add("Experiences");


        listimage = new ArrayList<Integer>();
        listimage.add(R.drawable.ginfyprayer);
        listimage.add(R.drawable.poojaroom1);
        listimage.add(R.drawable.godsgallery);
        listimage.add(R.drawable.temp1);

    }


}

I declared that tab functions in mylayout also but my activity is not opening,it display my activity has stopped

is showing somelogcat error.

09-12 08:43:45.615: E/AndroidRuntime(2630): FATAL EXCEPTION: main
09-12 08:43:45.615: E/AndroidRuntime(2630): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.jsonandroid/com.example.jsonandroid.GinfyActivity}: java.lang.NullPointerException
09-12 08:43:45.615: E/AndroidRuntime(2630):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at android.os.Handler.dispatchMessage(Handler.java:99)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at android.os.Looper.loop(Looper.java:137)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at android.app.ActivityThread.main(ActivityThread.java:5039)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at java.lang.reflect.Method.invokeNative(Native Method)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at java.lang.reflect.Method.invoke(Method.java:511)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at dalvik.system.NativeStart.main(Native Method)
09-12 08:43:45.615: E/AndroidRuntime(2630): Caused by: java.lang.NullPointerException
09-12 08:43:45.615: E/AndroidRuntime(2630):     at com.example.jsonandroid.GinfyActivity.onCreate(GinfyActivity.java:44)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at android.app.Activity.performCreate(Activity.java:5104)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
09-12 08:43:45.615: E/AndroidRuntime(2630):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
09-12 08:43:45.615: E/AndroidRuntime(2630):     ... 11 more

Answer 1

For your your complete requirement https://github.com/AdilSoomro/Iphone-Tab-in-Android

Answer 2

replace these two lines

public class GinfyActivity extends Activity
TabHost mTabHost = (TabHost)findViewById(android.R.id.tabhost);

with following

public class GinfyActivity extends TabActivity
TabHost mTabHost = getTabHost();

EDIT

change activity which you want to display in following line.

Intent intentAndroid = new Intent().setClass(this, Your_Activity.class);

And if you want only Tab then it's better to use ActionBar as TabHost is deprecated.

Full Example of TabHost

To use ActionBar here is sample code (use Sherlock or appcompat Library for < API 11)

public class MainActivity extends Activity implements TabListener {
ActionBar actionBar;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    actionBar=getActionBar();
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
    actionBar.addTab(actionBar.newTab().setText("TAB 1").setTabListener(this));
    actionBar.addTab(actionBar.newTab().setText("TAB 2").setTabListener(this));
    actionBar.addTab(actionBar.newTab().setText("TAB 3").setTabListener(this));
}

@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
    // TODO Auto-generated method stub

}

@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
    switch (tab.getPosition()) {
    case 0:
        //start activity here or toast
        Toast.makeText(getApplicationContext(), "Start First Activity", Toast.LENGTH_SHORT).show();
        break;
    case 1:
        //start activity here or toast
        Toast.makeText(getApplicationContext(), "Start Second Activity", Toast.LENGTH_SHORT).show();
        break;
    case 2:
        //start activity here or toast
        Toast.makeText(getApplicationContext(), "Start Third Activity", Toast.LENGTH_SHORT).show();
        break;

    default:
        break;
    }

}

@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
    // TODO Auto-generated method stub

}

 }