Testing if an Android app is installed on the SD card

gistfile1.java

private boolean isAppInstalledToSDCard(Context context) {
    PackageManager pm = context.getPackageManager();
    try {
        int extStorage = ApplicationInfo.FLAG_EXTERNAL_STORAGE;
        String package = context.getPackageName();
        ApplicationInfo appInfo = pm.getApplicationInfo(package, extStorage);
        return extStorage == (extStorage & appInfo.flags);
    } catch (NameNotFoundException e) {
        e.printStackTrace();
        return false;
    }
}