[英]android how to open facebook app if it is installed in the phone
我想从我的应用程序中打开Facebook应用程序。 如果已安装,那么我想打开Facebook应用程序窗口,而不是Facebook的弹出窗口。
我怎样才能做到这一点?
它在Facebook Android SDK中提供。 当您需要继续FB登录时,SDK将打开FB App而不是弹出警报(如果已安装)。
这是代码(来自Facebook SDK代码 )
/*
* Copyright 2010 Facebook, Inc.
*
* 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.
*/
public class Facebook {
...
/**
* Internal method to handle single sign-on backend for authorize().
*/
private boolean startSingleSignOn(Activity activity, String applicationId,
String[] permissions, int activityCode) {
boolean didSucceed = true;
Intent intent = new Intent();
intent.setClassName("com.facebook.katana",
"com.facebook.katana.ProxyAuth");
intent.putExtra("client_id", applicationId);
if (permissions.length > 0) {
intent.putExtra("scope", TextUtils.join(",", permissions));
}
// Verify that the application whose package name is
// com.facebook.katana.ProxyAuth
// has the expected FB app signature.
if (!validateAppSignatureForIntent(activity, intent)) {
return false;
}
mAuthActivity = activity;
mAuthPermissions = permissions;
mAuthActivityCode = activityCode;
try {
activity.startActivityForResult(intent, activityCode);
} catch (ActivityNotFoundException e) {
didSucceed = false;
}
return didSucceed;
}
...
}
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