MarketVersionChecker.java

public class MarketVersionChecker {

	public static String getMarketVersion(String packageName) {
		try {
			Document doc = Jsoup.connect(
					"https://play.google.com/store/apps/details?id="
							+ packageName).get();
			Elements Version = doc.select(".content");

			for (Element mElement : Version) {
				if (mElement.attr("itemprop").equals("softwareVersion")) {
					return mElement.text().trim();
				}
			}

		} catch (IOException ex) {
			ex.printStackTrace();
		}

		return null;
	}

	public static String getMarketVersionFast(String packageName) {
		String mData = "", mVer = null;

		try {
			URL mUrl = new URL("https://play.google.com/store/apps/details?id="
					+ packageName);
			HttpURLConnection mConnection = (HttpURLConnection) mUrl
					.openConnection();

			if (mConnection == null)
				return null;

			mConnection.setConnectTimeout(5000);
			mConnection.setUseCaches(false);
			mConnection.setDoOutput(true);

			if (mConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
				BufferedReader mReader = new BufferedReader(
						new InputStreamReader(mConnection.getInputStream()));

				while (true) {
					String line = mReader.readLine();
					if (line == null)
						break;
					mData += line;
				}

				mReader.close();
			}

			mConnection.disconnect();

		} catch (Exception ex) {
			ex.printStackTrace();
			return null;
		}

		String startToken = "softwareVersion\">";
		String endToken = "<";
		int index = mData.indexOf(startToken);

		if (index == -1) {
			mVer = null;

		} else {
			mVer = mData.substring(index + startToken.length(), index
					+ startToken.length() + 100);
			mVer = mVer.substring(0, mVer.indexOf(endToken)).trim();
		}

		return mVer;
	}
}