Creating a full screen progress bar component for Android

CustomProgressBar.java

public final class CustomProgressBar {

	private Dialog dialog;

	public Dialog show(Context context) {
		return show(context, null);
	}

	public Dialog show(Context context, CharSequence title) {
		return show(context, title, false);
	}

	public Dialog show(Context context, CharSequence title, boolean cancelable) {
		return show(context, title, cancelable, null);
	}

	public Dialog show(Context context, CharSequence title, boolean cancelable,
			OnCancelListener cancelListener) {
		LayoutInflater inflator = (LayoutInflater) context
				.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		final View view = inflator.inflate(R.layout.progress_bar, null);
		if(title != null) {
			final TextView tv = (TextView) view.findViewById(R.id.id_title);
			tv.setText(title);
		}
		
		dialog = new Dialog(context, R.style.NewDialog);
		dialog.setContentView(view);
		dialog.setCancelable(cancelable);
		dialog.setOnCancelListener(cancelListener);
		dialog.show();

		return dialog;
	}

	public Dialog getDialog() {
		return dialog;
	}

}

progress_bar.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true" >

        <ProgressBar
            android:id="@+id/id_pbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/id_title"
            android:layout_below="@+id/id_pbar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/please_wait"
            android:layout_centerHorizontal="true" />

    </RelativeLayout>

</RelativeLayout>

styles.xml

<resources>

    <style name="NewDialog" parent="@android:Theme.Dialog">
        <item name="android:windowFrame">@null</item>
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:windowTitleStyle">@null</item>
        <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item>
        <item name="android:windowSoftInputMode">stateUnspecified|adjustPan</item>
        <item name="android:backgroundDimEnabled">false</item>
        <item name="android:background">@android:color/transparent</item>
    </style>

</resources>

UsingActivity.java

// Make this static as there will be just one instance per activity
private static CustomProgressBar progressBar = new CustomProgressBar();

// Show progress bar
progressBar.show(this,"Loading..");


// Dismiss progress bar
progressBar.getDialog().dismiss();