Develop Reference

android tab activity go to previous tab

I have an activity with five tabs. Everything looks okay when I go from tab 1 to tab 2 or tab 3. How can I go back programatically from tab 2 to tab 1?
Intent myIntent = new Intent(this, Tab1.class);
myIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(myIntent);
This is not working properly because it starts activity 1 without any tab.
When going from tab 1 to tab 2 I can both see tab 1 and tab 2 (current tab activated). But when going from tab 2 to tab 1, both tab 1 and tab 2 disappear from the activity. What could cause this?

This will surely help you.
TabHost tabHost = (TabHost) getParent().findViewById(android.R.id.tabhost);
tabHost.setCurrentTab(1);
OR you can refer to this link
How to programmatically switch tabs using buttonclick in Android
Thanks :)

just use finish() method
public void onClick(View v)
{
finish();
startActivity(new Intent(Activity2.this, Activity1.class));
}

I don't know about the Intent.FLAG_ACTIVITY_CLEAR_TOP, never needed that, but the mentioned effect of loosing your tabs is produced by calling startActivity() from your TabHost, not one of your tabs. If that's the case, move the call there and your tabs should stay.

I have a similar situation but seems none of the answers help. so, I post my solution here:
// tab selection history, each tab has a tag which is a string
private List<String> tabIdHistory = new ArrayList<String>();
#Override
protected void onCreate(Bundle savedInstance) {
super.onCreate(savedInstanceState);
// this layout contains TabHost and TabWidget
setContentView(R.layout.activity_main);
TabHost tabHost = (TabHost) findViewById(android.R.id.tabhost);
tabHost.setup();
tabHost.setOnTabChangedListener(new TabHost.OnTabChangeListener() {
#Override
public void onTabChanged(String tabId) {
tabIdHistory.remove(tabId); // ensure uniqueness
tabIdHistory.add(tabId);
}
});
// continue your tab initialisation, such as
// tabHost.addTab(tabHost.newTabSpec(TAG)
// .setContent(...).setIndicator(...));
}
#Override
public void onBackPressed() {
if (tabIdHistory.size() > 1) {
// pop the current last item, we want the second last
tabIdHistory.remove(tabIdHistory.size() - 1);
tabHost.setCurrentTabByTag(tabIdHistory.get(tabIdHistory.size() - 1));
} else {
super.onBackPressed();
}
}
If use select tab#1, tab#3, tab#2, tab#1, then the back stack is "3, 2, 1" and app will exit to main screen if user press back button three times. If you want to keep full history, comment out this line:
tabIdHistory.remove(tabId);

Android: Tab switch - How to update display when switching between tabs?

The app I am building has a tabhost with three tabs. The goal is to update the display in the new tab when the switch takes place. I have the following tab change listener set up in the main activity that built the tab host.
tabHost.setOnTabChangedListener(new OnTabChangeListener(){
public void onTabChanged(String tabId) {
//Now what?
}
});
The question is, How do I take the tabId given and use it to call a method in that tab?
Edit
To clarify a bit: when you create an Intent for a new tab you specify an Activity Class, an object of which, presumably, is created to handle setup and management of that tab.
intent = new Intent().setClass(this, Setup.class);
spec = tabHost.newTabSpec("setup").setIndicator("",
res.getDrawable(R.drawable.tab_setup))
.setContent(intent);
tabHost.addTab(spec);
What I am looking for with this question is how to get a reference to that object? In the example above, the Setup class is instantiated to handle the “Setup Tab”.
To restate my question now: How do I, from the OnTabChangeListener, call a method in the Setup class?

Try to use
tabHost.setOnTabChangedListener(new OnTabChangeListener(){
public void onTabChanged(String tabId) {
//Now what?
Object.refreshDrawableState();
}
});
Where Object = any display Object.

As it turns out the solution to the problem is closer to home. Rather than attaching code to the TabHost, the solution involves getting into the Life-Cycle of the activity by overriding the onPause and onResume methods.
#Override
public void onResume() {
super.onResume();
// Update your UI here.
}

How to get tab click in Android?

I have created two tabs in my Activity using the below code. This is working perfectly fine. When I click on the first tab I see its contents and the other one shows its content when clicked on it.
How ever I want to set a variable value to true or false based on the Tab selected. But I dont know how to get the tab click for this tab. Can you please help me on this.
The code :
tabHost.setup();
TabSpec ts = tabHost.newTabSpec("Tab1");
ts.setIndicator("", getResources().getDrawable(R.drawable.tab1_content));
ts.setContent(R.id.tab1Layout);
tabHost.addTab(ts);
TabSpec ts1 = tabHost.newTabSpec("Tab2");
ts1.setIndicator("", getResources().getDrawable(R.drawable.tab2_content));
ts1.setContent(R.id.tab2Layout);
tabHost.addTab(ts1);

Add onTabchangedListener to the tabhost and using selectedTab Value manage whatsoever you want to manage.
selectedTab value will be = 0 for first tab and rest so on
tabHost.setOnTabChangedListener(new OnTabChangeListener(){
#Override
public void onTabChanged(String tabId) {
// TODO Auto-generated method stub
int selectedTab = tabHost.getCurrentTab() // selected
}
});
Hope it helps :)

Opening the activity in another Tab on Click

I am using TabHost in my application and I want to open a webPage when I click on the Item from the List of one Tab into the another Tab.
I mean the list is in one Tab and when I click on an item from the list, I want to open the WebPage in to another Tab.
Can I doe this? If yes than please tell me how?
Thanks,
david

In the assumption that you've got your tabs setup like this :
LocalActivityManager localActivityManager = new LocalActivityManager(this, false);
tabHost.setup(localActivityManager);
TabSpec spec = tabHost.newTabSpec("tab1").setIndicator("My List").setContent(R.id.layout_tab1);
tabHost.addTab(spec);
spec = tabHost.newTabSpec("tab2").setIndicator("My Browser").setContent(R.id.layout_tab2);
tabHost.addTab(spec);
In your action (a button click in the snippet below), just set the current tab on your tabhost.
btnSearch.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
tabHost.setCurrentTab(1);
}
});

Get index of selected tab in tabHost

I'm trying to store the index of the currently selected tab in onSaveInstanceState so I can restore it. However the getCurrentTab apparantely gives me back the String I used in the etTabHost().newTabSpec, which I find a bit weird since the documentation says it returns an int and setCurrentTab also taking an int.
Does anyone know how I can get the index of my currently selected tab so I can restore it?

you are on the right way, use setOnTabChangedListener to get your selected tab.
public class MainActivity extends TabActivity {
static TabHost mytabs;
mytabs = getTabHost();
mytabs.setOnTabChangedListener(new OnTabChangeListener() {
#Override
public void onTabChanged(String arg0) {
Log.i("***Selected Tab", "Im currently in tab with index::" + mytabs.getCurrentTab());
}
});
...
...
...

You can use getCurrentTab() that returns index of tab start from 0.

Use tabHost.getCurrentTab() to get Tab ...
tabHost= getTabHost();
tabHost.addTab(tab0); // TabSpec tab0=tabHost.newTabSpec(...
tabHost.addTab(tab1); // TabSpec tab1=tabHost.newTabSpec
int current = tabHost.getTabHost() ;