Check if a device lock is set on Android. Code example for http://stackoverflow.com/a/27801128/236743

LockTest.java

/**
 * <p>Checks to see if the lock screen is set up with either a PIN / PASS / PATTERN</p>
 *
 * <p>For Api 16+</p>
 *
 * @return true if PIN, PASS or PATTERN set, false otherwise.
 */
public static boolean doesDeviceHaveSecuritySetup(Context context)
{
    return isPatternSet(context) || isPassOrPinSet(context);
}

/**
 * @param context
 * @return true if pattern set, false if not (or if an issue when checking)
 */
private static boolean isPatternSet(Context context)
{
    ContentResolver cr = context.getContentResolver();
    try
    {
        int lockPatternEnable = Settings.Secure.getInt(cr, Settings.Secure.LOCK_PATTERN_ENABLED);
        return lockPatternEnable == 1;
    }
    catch (Settings.SettingNotFoundException e)
    {
        XLog.e(e.getMessage());
        return false;
    }
}

/**
 * @param context
 * @return true if pass or pin set
 */
private static boolean isPassOrPinSet(Context context)
{
    KeyguardManager keyguardManager = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE); //api 16+
    return keyguardManager.isKeyguardSecure();
}

LOCK_PATTERN_ENABLED is deprecated from API 23. It throws a SecurityException. is there a workaround to check for a pattern or android doens't consider it as secure enough for device runing API 23 and above ?

update : I'm doing it this way : https://stackoverflow.com/a/46464312/1281350

return keyguardManager.isKeyguardSecure(); return true even if SIM card is locked.
See: https://developer.android.com/reference/kotlin/android/app/KeyguardManager.html#iskeyguardsecure