You can use this Android Library: https://github.com/danielemaddaluno/Android-Update-Checker. It aims to provide a reusable instrument to check asynchronously if exists any newer released update of your app on the Store.
It is based on the use of Jsoup (http://jsoup.org/) to test if a new update really exists parsing the app page on the Google Play Store:
private boolean web_update(){
try {
String curVersion = applicationContext.getPackageManager().getPackageInfo(BuildConfig.APPLICATION_ID, 0).versionName;
String newVersion = curVersion;
newVersion = Jsoup.connect("https://play.google.com/store/apps/details?id=" + BuildConfig.APPLICATION_ID + "&hl=en")
.timeout(30000)
.userAgent("Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6")
.referrer("http://www.google.com")
.get()
.select("div[itemprop=softwareVersion]")
.first()
.ownText();
return (value(curVersion) < value(newVersion)) ? true : false;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
And as “value” function the following (works if values are beetween 0-99):
private long value(String string) {
string = string.trim();
if( string.contains( "." )){
final int index = string.lastIndexOf( "." );
return value( string.substring( 0, index ))* 100 + value( string.substring( index + 1 ));
}
else {
return Long.valueOf( string );
}
}
If you want only to verify a mismatch beetween versions, you can change:
value(curVersion) < value(newVersion)
with value(curVersion) != value(newVersion)