Android Activity to show the Progress dialog created using DialogFragment

ProgressDialogActivity.java

public class ProgressDialogActivity extends FragmentActivity {

	final static String LOADING_DIALOG_TAG = "progress_dialog";	

	/**
	 * Shows the loading progress dialog
	 */
	public void showLoadingDialog() {

		FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
		Fragment prev = getSupportFragmentManager().findFragmentByTag(
				LOADING_DIALOG_TAG);

		if (prev != null) {
			ft.remove(prev);
		}

		// Create and show the dialog.
		LoadingDialogFragment newFragment = ProgressDialogFragment.newInstance();
		newFragment.show(ft, LOADING_DIALOG_TAG);
	}

	/**
	 * Dismisses the loading progress dialog
	 */
	public void dismissLoadingDialog() {
		FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
		Fragment prev = getSupportFragmentManager().findFragmentByTag(
				LOADING_DIALOG_TAG);

		if (prev != null) {
			ft.remove(prev);
			ft.commit();
		}
	}
}