Java tutorial
/** * Copyright (c) 2014-present, Facebook, Inc. All rights reserved. * * You are hereby granted a non-exclusive, worldwide, royalty-free license to use, * copy, modify, and distribute this software in source code or binary form for use * in connection with the web services and APIs provided by Facebook. * * As with any software that integrates with the Facebook platform, your use of * this software is subject to the Facebook Developer Principles and Policies * [http://developers.facebook.com/policy/]. This copyright notice shall be * included in all copies or substantial portions of the software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ package com.facebook.internal; import android.app.Activity; import android.app.Dialog; import android.content.Intent; import android.content.res.Configuration; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.DialogFragment; import android.support.v4.app.FragmentActivity; import com.facebook.FacebookException; import com.facebook.FacebookSdk; /** * com.facebook.internal is solely for the use of other packages within the * Facebook SDK for Android. Use of any of the classes in this package is * unsupported, and they may be modified or removed without warning at any time. */ public class FacebookDialogFragment extends DialogFragment { private Dialog dialog; public static final String TAG = "FacebookDialogFragment"; /** * Setter for dialog. The dialog should be set before the show method is called. * @param dialog The dialog that is wrapped. */ public void setDialog(Dialog dialog) { this.dialog = dialog; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (this.dialog == null) { final FragmentActivity activity = getActivity(); Intent intent = activity.getIntent(); Bundle params = NativeProtocol.getMethodArgumentsFromIntent(intent); boolean isWebFallback = params.getBoolean(NativeProtocol.WEB_DIALOG_IS_FALLBACK, false); WebDialog webDialog; if (!isWebFallback) { String actionName = params.getString(NativeProtocol.WEB_DIALOG_ACTION); Bundle webParams = params.getBundle(NativeProtocol.WEB_DIALOG_PARAMS); if (Utility.isNullOrEmpty(actionName)) { Utility.logd(TAG, "Cannot start a WebDialog with an empty/missing 'actionName'"); activity.finish(); return; } webDialog = new WebDialog.Builder(activity, actionName, webParams) .setOnCompleteListener(new WebDialog.OnCompleteListener() { @Override public void onComplete(Bundle values, FacebookException error) { onCompleteWebDialog(values, error); } }).build(); } else { String url = params.getString(NativeProtocol.WEB_DIALOG_URL); if (Utility.isNullOrEmpty(url)) { Utility.logd(TAG, "Cannot start a fallback WebDialog with an empty/missing 'url'"); activity.finish(); return; } String redirectUrl = String.format("fb%s://bridge/", FacebookSdk.getApplicationId()); webDialog = new FacebookWebFallbackDialog(activity, url, redirectUrl); webDialog.setOnCompleteListener(new WebDialog.OnCompleteListener() { @Override public void onComplete(Bundle values, FacebookException error) { // Error data is nested in the values since this is in the form of a // Native protocol response onCompleteWebFallbackDialog(values); } }); } this.dialog = webDialog; } } @NonNull @Override public Dialog onCreateDialog(Bundle savedInstanceState) { // Prevents an NPE crash in the support library if (dialog == null) { onCompleteWebDialog(null, null); setShowsDialog(false); } return dialog; } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); if (this.dialog instanceof WebDialog) { ((WebDialog) this.dialog).resize(); } } @Override public void onDestroyView() { if (getDialog() != null && getRetainInstance()) { getDialog().setDismissMessage(null); } super.onDestroyView(); } private void onCompleteWebDialog(Bundle values, FacebookException error) { FragmentActivity fragmentActivity = getActivity(); Intent resultIntent = NativeProtocol.createProtocolResultIntent(fragmentActivity.getIntent(), values, error); int resultCode = error == null ? Activity.RESULT_OK : Activity.RESULT_CANCELED; fragmentActivity.setResult(resultCode, resultIntent); fragmentActivity.finish(); } private void onCompleteWebFallbackDialog(Bundle values) { FragmentActivity fragmentActivity = getActivity(); Intent resultIntent = new Intent(); resultIntent.putExtras(values == null ? new Bundle() : values); fragmentActivity.setResult(Activity.RESULT_OK, resultIntent); fragmentActivity.finish(); } }