Develop Reference

Open particular tab on click of imageview

I have used multiple tab layout activities (ex.5) & multiple image view (ex:5 ).i click (Ex:3) image then open particular tab (Ex:3). how to write code anybody help.Image used in main activity image click enter tab layout particular tab.

Use Android TabHost and its method setCurrentTab() in your onCreate()-method.Pass your required tab index to this onCreate()

On using ViewPager pass the selected imageview position
viewPager.setCurrentItem(position, true);
Using TabLayout, add onTabSelectedListener to swipe views
tabLayout.setOnTabSelectedListener(this);
When it comes to slide
viewPager.setOnPageChangeListener(
new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
viewPager.setCurrentItem(position);
tabLayout.setScrollPosition(position, 0f, true);
}
});

Android: Updating tab content

I am new to Android development. I have a ViewPager which holds TabLayout (that has fixed number of tabs). The ViewPager has SectionPagerAdapter (that has a fragment corresponding to tabs).
Now, I want to update tab content when user selects the tab and as it becomes visible (or when user wants to refresh the content).
But I am not sure which is correct way I can do this.
So far till now I found two solutions:
1) Add listener to TabLayout:
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener()
{
#Override
public void onTabSelected(TabLayout.Tab tab)
{
mViewPager.setCurrentItem(tab.getPosition());
// Update tab containts here
}
#Override
public void onTabUnselected(TabLayout.Tab tab)
{
}
#Override
public void onTabReselected(TabLayout.Tab tab)
{
}
});
2) Use ViewPager.OnPageChangeListener to get callbacks for when a page fragment (inside Tab) becomes visible:
viewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener()
{
#Override
public void onPageSelected(int position)
{
// Update tab containts here
}
});
Can someone expert in this please advice me?

The way a viewpager adapter works (with tabs) is that once you add your fragments to the viewpager, then you basically need to add content to your fragments and let the adapter manage which fragment is visible when a given tab is selected.
So, by simply using : OnTabSelectedListenerinterface on your tabLayout, all you need to do is `setCurrentItem(tab.getPosition()); on your viewPager reference (from your layout).
You can have a method like this to add fragments to your viewPagerAdapter:
private void setupViewPager(ViewPager viewPager){
//then create an instance of your ViewPagerAdapter class here
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
//then add fragments for each TAB here
//by calling a method inside your Adapter like this
adapter.addFrag(new FragmentOne(), "TITLE HERE");
adapter.addFrag(new FragmentTwo(), "TITLE TWO");
//Now set your adapter here
viewPager.setAdapter(adapter);
}
Now in your fragments, you can show different content accordingly.
I hope this helps!

How to change the selected tab in a tabLayout programmatically

I have a tab layout with a view pager and 5 different tabs, if the user is not registered only one option is available, so I want to disable the click on the other tabs. What I did is override the onTabSelected to change the current item in the viewPager.
#Override
public void onTabSelected(TabLayout.Tab tab) {
if (User.current != null) {
viewPager.setCurrentItem(tab.getPosition());
} else {
viewPager.setCurrentItem(0);
}
}
It works perfectly but it has one problem, the tab indicator change to the selected tab, so I want to keep the tab indicator on the first tab.

ViewPager finish on last fragment scroll

I have created default activity provided by eclipse with 3 Tabs and ViewPager. My question is, how can I make ViewPager, if I scroll on the 3rd Tab to the right (that would mean on the 4th Tab), to close the activity ?

What if you added a transparent / Thank You / Credits / whatever 4th tab and then did something like:
mViewPager.setOnPageChangeListener(this);
which would then allow you to do something like:
#Override
public void onPageSelected(int position) {
if(position >= mPagerAdapter.getCount()-1)
finish();
}

You can try this:
ViewPager Tab;
Tab = (ViewPager)findViewById(R.id.pager);
Tab.setOnPageChangeListener(
new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
if(position==4)
{
finish();
}
}
});
Tab.setAdapter(TabAdapter);

How do I make all tabs in a TabHost unselected

I need to show tab content on occasion, otherwise the area must be filled with "non-tabhost" data.However, tabs should be visible and when user clicks any of those tabs "non-tabhost" must be hidden and appropriate tab content must become visible.
It's something connected to a fake tab creation ?
Give an example of creating TabHost with tabs unselected.
Thanks.

What I usually do is, add an extra Tab and use setVisibility(View.GONE) to hide it. THis will just hide the tab button from the user, and the Tab will still be there, in the "background" and you can programmatically select it, by using tabHost.setCurrentTab(0). I also usually keep this tab as the first one.

1.copy the code where you want to tabs make unselected
tabLayout.setSelectedTabIndicatorColor(Color.WHITE);
tabLayout.setTabTextColors(Color.BLACK, Color.BLACK);
2.Override on Tabselected Listener and paste the following code
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override`enter code here
public void onTabSelected(TabLayout.Tab tab) {
tabLayout.setSelectedTabIndicatorColor(Color.parseColor("#EB1C23"));
tabLayout.setTabTextColors(Color.BLACK, Color.RED);
viewPager.setCurrentItem(position);
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
tabLayout.setSelectedTabIndicatorColor(Color.parseColor("#EB1C23"));
tabLayout.setTabTextColors(Color.BLACK, Color.RED);
viewPager.setCurrentItem(position);
}
});