How to replace a Fragment on button click of that fragment?

You can use the following to replace a fragment on button click of that fragment:

getFragmentManager().beginTransaction().replace(R.id.main_content, new insertFragmentNameHere()).addToBackStack(null).commit();

you can replace fragment by FragmentTransaction.

Here you go.

Make an interface.

public interface FragmentChangeListener 
{
    public void replaceFragment(Fragment fragment); 
}

implements your Fragment holding activity with this interface.

public class HomeScreen extends FragmentActivity implements
        FragmentChangeListener {


         @Override
         public void replaceFragment(Fragment fragment) {
            FragmentManager fragmentManager = getSupportFragmentManager();;     
            FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
            fragmentTransaction.replace(mContainerId, fragment, fragment.toString());
            fragmentTransaction.addToBackStack(fragment.toString());
            fragmentTransaction.commit();   
    }

}

Call this method from Fragments like this.

//In your fragment.

public void showOtherFragment()
{
       Fragment fr=new NewDisplayingFragment();
             FragmentChangeListener fc=(FragmentChangeListener)getActivity();
             fc.replaceFragment(fr);
}

Hope this will work!

NOTE: mContainerId is id of the view who is holding the fragments inside. You should override Fragment's onString() method as well.

1. Define an interface and call it IChangeListener (or something like that) and define a method inside which will do the work (ex, changeFragment()) (or call another method which will do the work) for changing the fragment).
2. Make your activity implement the interface, or make an anonymous class within the activity implement it.
3. Make a paramerized constructor of your fragment, which accepts a IChangeListener parameter.
4. When initializing the fragment, pass your IChangeListener implementation (the anonymous class or the activity, implementing it)
5. Make the onClick listener of the button call the changing method of the IChangeListener.

Well even I am learning android...

I solved same problem recently, "How to Change Fragment On button's click event".

buttonName.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        FragmentTransaction fragmentTransaction = getActivity()
            .getSupportFragmentManager().beginTransaction();
        fragmentTransaction.replace(R.id.frame1, new Homefragment());
        fragmentTransaction.commit();
    }
});

Here frame1 is id of FrameLayout which have define in my DrawerLayer's XML.

So now whenever I want fragment transaction I use this code. Each time it will replace frame1 instated of your last fragment.

FragmentTransaction fragmentTransaction = getActivity()
        .getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.frame1, new newfragment());
fragmentTransaction.commit()

Hope this will help..