org.catnut.fragment.OAuthFragment.java Source code

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Here is the source code for org.catnut.fragment.OAuthFragment.java

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/*
 * The MIT License (MIT)
 * Copyright (c) 2014 longkai
 * The software shall be used for good, not evil.
 */
package org.catnut.fragment;

import android.app.ActionBar;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Fragment;
import android.app.ProgressDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.RelativeLayout;
import android.widget.Toast;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import org.catnut.R;
import org.catnut.api.UserAPI;
import org.catnut.core.CatnutApp;
import org.catnut.core.CatnutRequest;
import org.catnut.metadata.User;
import org.catnut.metadata.WeiboAPIError;
import org.catnut.processor.UserProcessor;
import org.catnut.ui.MainActivity;
import org.catnut.util.Manifest;
import org.json.JSONObject;

/**
 * Oauth2????
 *
 * @author longkai
 */
public class OAuthFragment extends Fragment {

    private static final String TAG = "OAuthFragment";

    private WebView mWebView;
    private ActionBar mActionBar;
    private CatnutApp mApp;
    private RequestQueue mRequestQueue;

    private ProgressDialog mProgressDialog;

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        mApp = CatnutApp.getTingtingApp();
        mRequestQueue = mApp.getRequestQueue();
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // set actionbar
        mActionBar = getActivity().getActionBar();
        setHasOptionsMenu(true);

        // set the auth webview
        mWebView = new WebView(getActivity());
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.MATCH_PARENT);
        mWebView.setLayoutParams(params);

        mWebView.setWebViewClient(new WebViewClient() {
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                if (!url.startsWith(Manifest.AUTH_REDIRECT_URI)) {
                    return false;
                }
                String code = Uri.parse(url).getQueryParameter("code");
                Log.d(TAG, "the auth code is " + code);
                String accessTokenUri = Manifest.getAccessTokenUri(code);
                mProgressDialog = ProgressDialog.show(getActivity(), null, getString(R.string.authing_hint), true,
                        false);
                mRequestQueue.add(new JsonObjectRequest(Request.Method.POST, accessTokenUri, null,
                        new Response.Listener<JSONObject>() {
                            @Override
                            public void onResponse(JSONObject response) {
                                Log.i(TAG, "auth success with result: " + response.toString());
                                mApp.saveAccessToken(response);
                                Toast.makeText(getActivity(), getString(R.string.auth_success), Toast.LENGTH_SHORT)
                                        .show();
                                // fetch user' s profile
                                mRequestQueue.add(
                                        new CatnutRequest(getActivity(), UserAPI.profile(mApp.getAccessToken().uid),
                                                new UserProcessor.UserProfileProcessor(),
                                                new Response.Listener<JSONObject>() {
                                                    @Override
                                                    public void onResponse(JSONObject response) {
                                                        mProgressDialog.dismiss();
                                                        mApp.getPreferences().edit()
                                                                .putString(User.screen_name,
                                                                        response.optString(User.screen_name))
                                                                .commit();
                                                        Intent intent = new Intent(getActivity(),
                                                                MainActivity.class);
                                                        startActivity(intent);
                                                    }
                                                }, null // should not happen!
                                ));
                            }
                        }, new Response.ErrorListener() {
                            @Override
                            public void onErrorResponse(VolleyError error) {
                                Log.wtf(TAG, "auth fail!", error);
                                WeiboAPIError e = WeiboAPIError.fromVolleyError(error);
                                new AlertDialog.Builder(getActivity())
                                        .setMessage(getString(R.string.auth_fail_with_reason, e.error))
                                        .setNegativeButton(android.R.string.ok, null).show();
                            }
                        })).setTag(TAG);
                return true;
            }
        });
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return mWebView;
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        // clear cache
        WebSettings settings = mWebView.getSettings();
        settings.setJavaScriptEnabled(true);
        settings.setCacheMode(WebSettings.LOAD_NO_CACHE);
        settings.setSaveFormData(false);
        mWebView.loadUrl(Manifest.getOAuthUri());
    }

    @Override
    public void onStart() {
        super.onStart();
        mActionBar.setDisplayHomeAsUpEnabled(false);
        mActionBar.setTitle(getString(R.string.oauth));
        mActionBar.setIcon(R.drawable.weibo_logo);
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        MenuItem refresh = menu.add(Menu.NONE, R.id.refresh, Menu.NONE, getString(R.string.refresh));
        refresh.setIcon(R.drawable.ic_action_retry);
        refresh.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.refresh:
            mWebView.reload();
            break;
        default:
            break;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onStop() {
        mRequestQueue.cancelAll(TAG);
        super.onStop();
    }

    @Override
    public void onDestroy() {
        mWebView.clearCache(true);
        super.onDestroy();
    }
}