Dumb Programming Questions - Pro Programming Answers Megathread!

[balistic void]

Put breakpoint and inspect the value of "Test".

[IceBlock]

Put breakpoint and inspect the value of "Test".

Value of test is correct and is a string.

This does not equal 0 for whatever reason.

If DnsQuery(sAddr, DNS_TYPE_A, DNS_QUERY_BYPASS_CACHE, pServers, pRecord, 0) = 0 Then

[Dark Flare]

Anyone done Android <-> WCF?

[balistic void]

Put breakpoint and inspect the value of "Test".

Value of test is correct and is a string.

This does not equal 0 for whatever reason.

If DnsQuery(sAddr, DNS_TYPE_A, DNS_QUERY_BYPASS_CACHE, pServers, pRecord, 0) = 0 Then

You think value of test is correct, does the program?

Put

if (test == "google.com")
msgbox "shizzle looks good"
else
msgbox "wtfffff"

Might be some weird character encoding thing.

[Irrelephant]

Anyone done Android <-> WCF?

Moar details. Your app trying to consume a existing WCF service? Need to implement both? If the WCF service provides a SOAP/REST interface it should be straight forward.

[Waagaa]

Anyone done Android <-> WCF?

Moar details. Your app trying to consume a existing WCF service? Need to implement both? If the WCF service provides a SOAP/REST interface it should be straight forward.

This, Android works best with REST, because it's a lot more lightweight than SOAP (mobile latency/bandwidth). A WCF service can expose a REST interface fairly trivially.

[IceBlock]

Put breakpoint and inspect the value of "Test".

Value of test is correct and is a string.

This does not equal 0 for whatever reason.

If DnsQuery(sAddr, DNS_TYPE_A, DNS_QUERY_BYPASS_CACHE, pServers, pRecord, 0) = 0 Then

You think value of test is correct, does the program?

Put

if (test == "google.com")
msgbox "shizzle looks good"
else
msgbox "wtfffff"

Might be some weird character encoding thing.

Thank you. I made an assumptation that it would take the value directly without adding whitespace. So Trim() Solved it. -_-

EDIT:
What a load of brainfuck Win32 API is compared to .NET.

[Dark Flare]

Anyone done Android <-> WCF?

Moar details. Your app trying to consume a existing WCF service? Need to implement both? If the WCF service provides a SOAP/REST interface it should be straight forward.

This, Android works best with REST, because it's a lot more lightweight than SOAP (mobile latency/bandwidth). A WCF service can expose a REST interface fairly trivially.

Yes but I'm bad and didn't know Android til 2 days ago >.>

Current problem: How do I shot threading.

[Dark Flare]

MULTITHREADING SUCCESS.

New problem
org.apache.http.conn.HttpHostConnectException: Connection to http://localhost:8732 refused
Y U NO LET ME

[Daneel Trevize]

You have something listening on that port, right?
Firewall? It's above the usual 1024 restricted range...

Edit: Is it because your Android emulator doesn't have something running there, instead that's on your local physical machine, so you need to traverse the network correctly to break out of the VM? Try using an IP address.
http://developer.android.com/resourc...localhostalias

Referring to localhost from the emulated environment

If you need to refer to your host computer's localhost, such as when you want the emulator client to contact a server running on the same host, use the alias 10.0.2.2 to refer to the host computer's loopback interface. From the emulator's perspective, localhost (127.0.0.1) refers to its own loopback interface.

[Dark Flare]

Yes it is that. I am an idiot.

Now I've almost got there, it's getting the response from the web service, but it's not setting it to the textbox output for fuck only knows what reason.

// Read response data
char[] buffer = new char[(int)responseEntity.getContentLength()];
InputStream stream = responseEntity.getContent();
InputStreamReader reader = new InputStreamReader(stream);
reader.read(buffer);
stream.close();

JSONArray helloresponse = new JSONArray(new String(buffer));

tv.setText(helloresponse.toString());
tv.setVisibility(View.VISIBLE);


Y U NO GO

(helloresponse contains the information i would expect, btw)

EDIT: FIXT

[Waagaa]

Yes it is that. I am an idiot.

Now I've almost got there, it's getting the response from the web service, but it's not setting it to the textbox output for fuck only knows what reason.

// Read response data
char[] buffer = new char[(int)responseEntity.getContentLength()];
InputStream stream = responseEntity.getContent();
InputStreamReader reader = new InputStreamReader(stream);
reader.read(buffer);
stream.close();

JSONArray helloresponse = new JSONArray(new String(buffer));

tv.setText(helloresponse.toString());
tv.setVisibility(View.VISIBLE);


Y U NO GO

(helloresponse contains the information i would expect, btw)

EDIT: FIXT

Could be an encoding thing. Can you get the encoding of the responseEntity? I'm pretty sure there's a String constructor that allows you to supply encoding too.
Also, try outputting new String(buffer) instead, a JSON response is just a String..

[Dark Flare]

Yup, got it.

Now time to build in authentication! This will be an interesting day.

[Dark Flare]

Okay so kinda working.

The string I get back from the Auth is like so:
{"Authed":true,"Level":1,"Name":"test"}

What's the best way to split up and handle this data? It's a JSON response if that makes any difference. Basically what I want it to do at this stage is push to a new screen (via Intent, is that right for UI flow?) where it'll display a list of things based on what the level set is (higher level can see MOAR THINGS), and also output the name at the top of the screen or something (which I know how to do, obv, I just don't know how to split up that data that's passed back from the call).

[halka]

Isn't there a JSON deserializer (which should unpack the data into an array or an object) built-in?

ed: haven't really tried my hand at this whole mobile developemnt thing so I'm not sure what resources you have at our disposal, but System.Web.Extensions.dll.JavaScriptSerializer (.NET 3.5) should be able to parse it.

[Dark Flare]

Sorry I should have specified, it's on the android that I wish to turn it into something I can manipulate.

[Dark Flare]

By jove I do believe I'm getting there. Can now handle it as an object and interrogate the properties.

Now I just need to use the interrogation of the "Authed" property to decide whether or not to pass to a NEW SCREEN.

[Daneel Trevize]

I do hope you're not trusting the response from the network as to whether a secret/secure screen should be displayed. Sure you have the server dictate what level a user is at, and then decide to present them controls or not with which to send different requests to the server, but please don't be having some privileged info in your android client that you will reveal to someone/anyone who manages to supply some specific text in a HTTP response.

[Dark Flare]

Yeah the new screen is just going to be a series of buttons that fire off further web calls to the server with credentials from the phone, don't worry!

[Tarminic]

Another programming question, this one work-related.

NOTE: The language I'm working with is PHP 5.3something
Currently, my work codebase has a bunch of controllers classes that extend a Secure_Controller class. They also have various AJAX functions for retrieving data, none of which are really standardized - leading to potential security issues, duplicated code, etc. I want to solve this by creating a standarized function that all AJAX calls will pass through. My initial idea (a shitty one) was to do something like this:

class Derp extends Secure_Controller {
    public function ajax($urlSegment) {
        $params = $this->input->post();
        switch($urlSegment) {
            case 'poop':
                $data = $this->doSomething($params['haduuuur']);
                break;
            case 'urinateViolently':
                $data = $this->doSomethingElse($params['herp'];
                break';
            //so on and so forth
       }
       $this->output->set_header('Content-type:application/json');
       $this->output->set_output(json_encode($data));
    }
}

So the URL /derp/ajax/urinateViolently will call Derp::doSomethingElse()


Except that's terrible - you have to update the function EVERY TIME you want to enable another AJAX call. It's not that much better than just implementing them without any kind of consistency.

This led me to another idea, however - implement an AJAX delegate function in the secure controller class and using a string at the end of the functions to denote its availability to be used for an AJAX call:

class Secure_Controller {

    public function ajax($task) {
        $params = $this->input->post();
        $functionName = $task . 'ForAjax';
        $data = array();
        if(method_exists($this, $functionName) {
            $data = $this->$functionName($params);
        }
        $this->output->set_header('Content-type:application/json');
        $this->output->set_output(json_encode($data));
    }
}

Thus, the functions being implemented here would look something like this:

Derp::pooForAjax($params) /* called from /derp/ajax/poo */
Derp::urinateViolentlyForAjax($params) /* called from /derp/ajax/urinateViolently */

The primary downside of this is that if some dumb shit just happens to use a function that ends with "ForAjax" its output will end up returned, but I've checked the codebase and there are no such functions. I feel like I can do better than this, but I don't want developers to have to manually update a registry of AJAX-capable functions. What's your input, FHC programmers?