Android redirect uri

Question

I'm working with the instagram API and I don't understand what I should put in for the redirect api. At the moment I simply put in https://127.0.0.1

But I dont really understand. Also, once I get the allow/cancel screen and I press allow it gives me an error saying that I cant go to that address but I can also see the authorization code appended on to the address. So how can i redirect back from my redirect uri? How can I tell android that after user clicks allow to come back into the app use the code for further authentication?

Im sure you will say something like make my own custom scheme/ intent filters etc but please be a little more supportive im new and I dont understand and I did do research on them.

My on resume method is below

@Override
    protected void onResume() {
        super.onResume();

        // the intent filter defined in AndroidManifest will handle the return from ACTION_VIEW intent
        Uri uri = getIntent().getData();
        if (uri != null && uri.toString().startsWith(redirectUri)) {
            // use the parameter your API exposes for the code (mostly it's "code")
            String code = uri.getQueryParameter("code");
            if (code != null) {
                // get access token
                LoginService loginService =
                        ServiceGenerator.createService(LoginService.class, clientId, clientSecret);
                AccessToken accessToken = loginService.getAccessToken(code, "authorization_code");
            } else if (uri.getQueryParameter("error") != null) {
                // show an error message here
            }
        }
    }

This is my manifest snippet dealing with intent filters:

        <activity
            android:name=".LoginActivity"
            android:label="@string/title_activity_login" >
            <intent-filter>
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
                <data
                    android:host="redirecturi"
                    android:scheme="your" />
            </intent-filter>
        </activity>

Answer 1

You have to setup an event listener on the browser view and check for code in URL param if the URL is equal to the redirect_uri, and then make POST request to the auth URL using the code and client_secret as documented in Instagram authentication

something like this:

webView.setWebViewClient(new WebViewClient() {
   public void onPageFinished(WebView view, String url) {
        String code = url.getQueryParameter("code");
        // ...
    }
});