Wonderland

privateboolean isAppInstalled(String uri) {
PackageManager pm = getPackageManager();
boolean installed =false;
try {
pm.getPackageInfo(uri,PackageManager.GET_ACTIVITIES);
installed =true;
} catch(PackageManager.NameNotFoundException e) {
installed =false;
}
return installed;
}

if(isAppInstalled(“com.yourpackage.package”)) {
//app installed
} else {
//app not installed
}