AboutDialogBuilder.java

package org.openintents.plaphoons.ui;

import org.openintents.plaphoons.sample.R;

import android.app.AlertDialog;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.text.SpannableString;
import android.text.util.Linkify;
import android.widget.TextView;

public class AboutDialogBuilder {
	public static AlertDialog create(Context context)
			throws NameNotFoundException {
		// Try to load the a package matching the name of our own package
		PackageInfo pInfo = context.getPackageManager().getPackageInfo(
				context.getPackageName(), PackageManager.GET_META_DATA);
		String versionInfo = pInfo.versionName;

		String aboutTitle = String.format("About %s",
				context.getString(R.string.app_name));
		String versionString = String.format("Version: %s", versionInfo);
		String aboutText = context.getString(R.string.about);

		// Set up the TextView
		final TextView message = new TextView(context);
		// We'll use a spannablestring to be able to make links clickable
		final SpannableString s = new SpannableString(aboutText);

		// Set some padding
		message.setPadding(10, 10, 10, 10);

		// Set up the final string
		message.setText(versionString + "\n\n" + s);
		// Now linkify the text
		Linkify.addLinks(message, Linkify.ALL);

		return new AlertDialog.Builder(context)
				.setTitle(aboutTitle)
				.setCancelable(true)
				.setIcon(R.drawable.icon)
				.setPositiveButton(context.getString(android.R.string.ok), null)
				.setView(message).create();
	}
}