使用Scribe库进行Flickr Oauth登录

Question

我是android的新手，请原谅我的错误。

package net.schwiz.oauth;

import org.json.JSONException;
import org.json.JSONObject;
import org.scribe.builder.ServiceBuilder;
import org.scribe.builder.api.TwitterApi;
import org.scribe.model.OAuthRequest;
import org.scribe.model.Response;
import org.scribe.model.Token;
import org.scribe.model.Verb;
import org.scribe.model.Verifier;
import org.scribe.oauth.OAuthService;

import android.app.Activity;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.TextView;


public class Main extends Activity {

    final static String APIKEY = "XXXXXXXXXXXXXXXXXXXX";
    final static String APISECRET = "XXXXXXXXXXXXXXXXXXXX";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        final TextView textView = (TextView)findViewById(R.id.textview);
        final  WebView webview = (WebView) findViewById(R.id.webview);

        if(APIKEY == null || APISECRET == null){
            textView.setText("You must enter your own APIKEY and SECRET to use this demo.  dev.twitter.com");
            webview.setVisibility(View.GONE);
            return;
        }

        //set up service and get request token as seen on scribe website 
        //https://github.com/fernandezpablo85/scribe-java/wiki/Getting-Started
        final OAuthService s = new ServiceBuilder()
        .provider(TwitterApi.class)
        .apiKey(APIKEY)
        .apiSecret(APISECRET)
        .callback(CALLBACK)
        .build();

        final Token requestToken = s.getRequestToken();
        final String authURL = s.getAuthorizationUrl(requestToken);

        //attach WebViewClient to intercept the callback url
        webview.setWebViewClient(new WebViewClient(){
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {

                //check for our custom callback protocol otherwise use default behavior
                if(url.startsWith("oauth")){
                    //authorization complete hide webview for now.
                    webview.setVisibility(View.GONE);

                    Uri uri = Uri.parse(url);
                    String verifier = uri.getQueryParameter("oauth_verifier");
                    Verifier v = new Verifier(verifier);

                    //save this token for practical use.
                    Token accessToken = s.getAccessToken(requestToken, v);


                    if(uri.getHost().equals("twitter")){
                        OAuthRequest req = new OAuthRequest(Verb.GET, "URL here");
                        s.signRequest(accessToken, req);
                        Response response = req.send();
                        try {
                            JSONObject json = new JSONObject(response.getBody());
                            textView.setText(json.toString(3));
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }

                    return true;
                }


                return super.shouldOverrideUrlLoading(view, url);
            }
        });


        //send user to authorization page
        webview.loadUrl(authURL);
    }
}

我试过这段代码，它在推特上运行得很好，但现在我想使用Flickr验证用户，上面的代码在这种情况下不起作用，if条件if(url.startsWith("oauth"))没有按照我想象的方式工作。请帮帮忙。

Answer 1

我已经找到问题所在了！当我调用webview.loadUrl(authURL);方法时，flickr www.flickr.com的url更改为m.flickr.com，这将在任何用户登录/身份验证之前触发事件shouldOverrideUrlLoading。

if(authURL.charAt(7)=='w')
{
   authURL=authURL.replaceFirst("www", "m");
} 

解决了我的问题。