Java tutorial
/* * Copyright 2012 Javier Prez Pacheco and Francisco Daz Rodriguez * TweetTopics 2.0 * javielinux@gmail.com * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.javielinux.facebook; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.util.Log; import android.webkit.CookieManager; import android.webkit.CookieSyncManager; import android.webkit.WebView; import android.widget.LinearLayout; import android.widget.LinearLayout.LayoutParams; import com.android.dataframework.DataFramework; import com.android.dataframework.Entity; import com.facebook.android.AsyncFacebookRunner; import com.facebook.android.DialogError; import com.facebook.android.Facebook; import com.facebook.android.Facebook.DialogListener; import com.facebook.android.FacebookError; import com.javielinux.fragments.MyActivityFragment; import com.javielinux.utils.ImageUtils; import com.javielinux.utils.Utils; import org.json.JSONObject; import java.io.FileOutputStream; import java.io.IOException; import java.net.MalformedURLException; import java.net.URL; public class FacebookHandler { public static final String FB_APP_ID = "213237322060541"; private WebView mWebView; boolean isWebViewShown; private MyActivityFragment myActivityFragment = null; private Activity activity; LinearLayout layout; private static String[] PERMISSIONS = new String[] { "offline_access", "read_stream", "publish_stream" }; public FacebookHandler(Activity activity) { if (activity != null) { this.activity = activity; layout = new LinearLayout(activity); activity.addContentView(layout, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT)); isWebViewShown = false; } } public void setMyActivityFragment(MyActivityFragment myActivityFragment) { this.myActivityFragment = myActivityFragment; } private Handler handler = new Handler() { @Override public void handleMessage(Message msg) { if (msg.what == 0) { if (myActivityFragment != null) { myActivityFragment.fillData(); } } } }; public void newUser() { showWebView(); new JsHandler().login(); } public Facebook loadUser(long id) { try { DataFramework.getInstance().open(getActivity(), Utils.packageName); } catch (Exception e) { e.printStackTrace(); } Entity ent = DataFramework.getInstance().getTopEntity("users", DataFramework.KEY_ID + " = " + id, ""); if (ent != null) { Facebook fb = new Facebook(FB_APP_ID); fb.setAccessToken(ent.getString("token_facebook")); fb.setAccessExpires(ent.getLong("expires_facebook")); if (fb.isSessionValid()) { return fb; } else { return null; } } DataFramework.getInstance().close(); return null; } public void showWebView() { if (isWebViewShown) { return; } CookieSyncManager.createInstance(activity); mWebView = new WebView(activity); layout.addView(mWebView, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT)); CookieManager.getInstance().removeAllCookie(); CookieManager.getInstance().removeExpiredCookie(); CookieManager.getInstance().removeSessionCookie(); CookieSyncManager.getInstance().sync(); isWebViewShown = true; } public void hideWebView() { layout.removeView(mWebView); isWebViewShown = false; } public Activity getActivity() { return activity; } public boolean isWebViewShown() { return isWebViewShown; } private class JsHandler { public void login() { final Activity activity = FacebookHandler.this.getActivity(); activity.runOnUiThread(new Runnable() { public void run() { hideWebView(); try { final Facebook fb = new Facebook(FB_APP_ID); fb.authorize(getActivity(), PERMISSIONS, new AppLoginListener(fb)); } catch (Exception e) { Log.d(Utils.TAG, "values: " + e.getMessage()); } } }); } private class AppLoginListener implements DialogListener { private Facebook fb; public AppLoginListener(Facebook fb) { this.fb = fb; } public void saveUser(String uid, String name, String username) { try { DataFramework.getInstance().open(getActivity(), Utils.packageName); } catch (Exception e) { e.printStackTrace(); } name = name.replace("'", ""); if (DataFramework.getInstance().getTopEntity("users", "name = '" + name + "'", "") == null) { Entity ent = new Entity("users"); ent.setValue("name", name); ent.setValue("service", "facebook"); ent.setValue("uid_facebook", uid); ent.setValue("username_facebook", username); ent.setValue("expires_facebook", Utils.fillZeros(fb.getAccessExpires() + "")); ent.setValue("token_facebook", fb.getAccessToken()); ent.save(); try { URL url = new URL("http://graph.facebook.com/" + username + "/picture"); Bitmap avatar = BitmapFactory.decodeStream(new Utils.FlushedInputStream(url.openStream())); if (avatar != null) { String file = ImageUtils.getFileAvatar(ent.getId()); FileOutputStream out = new FileOutputStream(file); avatar.compress(Bitmap.CompressFormat.JPEG, 90, out); avatar.recycle(); } } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } DataFramework.getInstance().close(); handler.sendEmptyMessage(0); } public void onCancel() { Log.d(Utils.TAG, "login canceled"); } public void onComplete(Bundle values) { new AsyncFacebookRunner(fb).request("/me", new AsyncRequestListener() { public void onComplete(JSONObject obj, final Object state) { Log.d(Utils.TAG, "obj: " + obj.toString()); String uid = obj.optString("id"); String name = obj.optString("name"); String username = obj.optString("username"); saveUser(uid, name, username); } }, null); } public void onError(DialogError e) { Log.d(Utils.TAG, "dialog error: " + e); } public void onFacebookError(FacebookError e) { Log.d(Utils.TAG, "facebook error: " + e); } } } /* private class AppWebViewClient extends WebViewClient { @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { if (url.startsWith("app://")) { String handlerName = url.substring(6); Log.d("app", "ejecutar " + handlerName); //runHandler(handlerName); return true; } return false; } } */ }