Creating multiple tabs :one after another

[Prajkti Khadse]

Hi all,
In my application, i want to create multiple tabs.
For example, i have a button on clicking which should create one more tab,(just like mozilla browser).
I searched on Internet as well as Android Documentation.. but did not get any clue...

Can anybody please help me..??

[Mark L. Murphy]

http://developer.android.com/guide/tutorials/views/hello-tabwidget.html

[Prajkti Khadse]

Thanks Mark,
I already referred that...
What i want actually is to create a new tab when user Clicks on "New Tab" menu or button..

Is it really possible??

[Pratik Goswami]

Hi Prajakti,

Here it is,

Main class - TabActivityDemo

package com.tab;

import android.app.TabActivity;
import android.content.ComponentName;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;

public class TabActivityDemo extends TabActivity {
	int count;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		Bundle extras = getIntent().getExtras();
		if (extras != null)
			count = extras.getInt("Tab");
		else
			count = 1;

		final TabHost tabHost = getTabHost();
		tabHost.setBackgroundColor(Color.BLACK);

		LayoutInflater.from(this).inflate(R.layout.tabview,tabHost.getTabContentView(), true);
		ComponentName tab1activity = new ComponentName("com.tab","com.tab.ChildTab");
		TabSpec ts1 = tabHost.newTabSpec("tab1");
		ts1.setIndicator("Tab");
		ts1.setContent(new Intent().setComponent(tab1activity).putExtra("Tab",
				count));
		for (int i = 0; i < count; i++) {
			tabHost.addTab(ts1);
		}
	}
}
  

Layout - tabview.xml

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="fill_parent"
	android:layout_height="fill_parent">
</AbsoluteLayout>  

Tab layout class - ChildTab

package com.tab;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;

public class ChildTab extends Activity {

	int count;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		Bundle extras = getIntent().getExtras();
		if (extras != null)
			count = extras.getInt("Tab");
		else
			count = 1;
		setContentView(MOBIConfig(this));
	}

	public ViewGroup MOBIConfig(Context context) {
		LinearLayout panel = new LinearLayout(this);
		panel.setOrientation(LinearLayout.VERTICAL);
		panel.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
				LayoutParams.WRAP_CONTENT));
		panel.setGravity(Gravity.CENTER);
		
		Button btn = new Button(this);
		btn.setText("ADD A NEW TAB");
		
		btn.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
				LayoutParams.WRAP_CONTENT));
		btn.setOnClickListener(new View.OnClickListener() {
			public void onClick(View view) {
				count++;
				startActivity(new Intent(view.getContext(),
						TabActivityDemo.class).putExtra("Tab", count));
			}
		});
		panel.addView(btn);
		return panel;
	}
}
 

Just modify according to your requirement.
Have fun!!!

Thanks & Regards
Pratik Goswami

[Prajkti Khadse]

Thanks Pratik,
one more question...

can we change title (i.e indicator) of tab on particular event??
i mean once the tab is added to TabHost, is it possible to modify it??

[Pratik Goswami]

Hi,

I have created a multiple instances of a single TabSpec object, you can create multiple objects of TabSpec fit to your requirement. After creating object you can change their property at specific event. You can create TabSpec's object array and add them with a loop. Apply your own logic to mess up with tab bar.

tabHost.setOnTabChangedListener(new OnTabChangeListener(){
public void onTabChanged(String arg0) {
	// TODO Auto-generated method stub				
} 

Thanks & Regards
Pratik Goswami

[Prajkti Khadse]

Thanks,
i'l try it..