Check if passcode enabled

gistfile1.java

private boolean deviceHasPasscodeEnabled()
{
    String LOCKSCREEN_UTILS = "com.android.internal.widget.LockPatternUtils";
    try
    { 
        Class<?> lockUtilsClass = Class.forName(LOCKSCREEN_UTILS);
        // "this" is a Context, in my case an Activity
        Object lockUtils = lockUtilsClass.getConstructor(Context.class).newInstance(this);

        Method method = lockUtilsClass.getMethod("getActivePasswordQuality");

        int lockProtectionLevel = Integer.valueOf(String.valueOf(method.invoke(lockUtils)));

        if(lockProtectionLevel >= DevicePolicyManager.PASSWORD_QUALITY_NUMERIC)
        {
            return true;
        }
    }
    catch (Exception e)
    {
        Log.e("reflectInternalUtils", "ex:"+e);
    }

    return false;
} 

gistfile2.m

-(BOOL) deviceHasPasscodeEnabled {
    NSData* secret = [@"Device has passcode set?" dataUsingEncoding:NSUTF8StringEncoding];
    NSDictionary *attributes = @{ (__bridge id)kSecClass: (__bridge id)kSecClassGenericPassword, (__bridge id)kSecAttrService: @"LocalDeviceServices",  (__bridge id)kSecAttrAccount: @"NoAccount", (__bridge id)kSecValueData: secret, (__bridge id)kSecAttrAccessible: (__bridge id)kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly };

    OSStatus status = SecItemAdd((__bridge CFDictionaryRef)attributes, NULL);
    if (status == errSecSuccess) { // item added okay, passcode has been set            
        SecItemDelete((__bridge CFDictionaryRef)attributes);

        return true;
    }

    return false;
}