MainActivity

public class MainActivity extends FragmentActivity {

	public static class MyFragment extends Fragment {

		@Override
		public View onCreateView(LayoutInflater inflater, ViewGroup container,
				Bundle savedInstanceState) {

			View view = inflater.inflate(R.layout.fragmentlayout, null);

			return view;

		}
	}

	public void myClickMethod(View v) {

		switch (v.getId()) {
		case R.id.button1:
			// Logcat
			Log.w("MainActivity", "Add Button");
			// Toast
			Toast.makeText(getApplicationContext(), "Add Button",
					Toast.LENGTH_SHORT).show();
		}
	}

	FrameLayout container;
	FragmentManager fm;
	MyFragment mFragment;
	String TAG_1 = "FRAGMENT";

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		fm = getSupportFragmentManager();
		mFragment = new MyFragment();

		if (savedInstanceState == null) {

			FragmentTransaction ft = fm.beginTransaction();
			ft.add(R.id.maincontainer, mFragment, TAG_1);
			ft.commit();
		}
	}
}