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Android--Facebook Login without LoginButton
1.引入facebook 工程lib，在Manifest中声明com.facebook.LoginActivity，facebook_app_id
<activity android:name="com.facebook.LoginActivity" android:label="@string/app_name" android:theme="@android:style/Theme.Translucent.NoTitleBar" /><meta-data android:name="com.facebook.sdk.ApplicationId" android:value="http://www.mamicode.com/@string/facebook_app_id" />
2.调用方式：
1).初始化facebookLogin，设置回调
private FacebookLogin facebookLogin;
facebookLogin = new FacebookLogin(this); facebookLogin.setLoginCallBack(new FacebookLogin.LoginCallBack() { @Override public void onPreLogin() { showLoadingDlg(); } @Override public void onLoginSuccess(GraphUser user) { dismissLoadingDlg(); Toast.makeText(getApplicationContext(), user.getName()+"========", Toast.LENGTH_LONG).show(); } @Override public void one rror() { dismissLoadingDlg(); } });
2).重写onActivityResult方法
@Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); facebookLogin.onActivityResult(requestCode, resultCode, data); }3).调用facebookLogin.login()方法，登录成功后会调用onLoginSuccess方法返回用户信息user
facebookLogin.login();
3.工具类FacebookLogin.java代码：
import android.app.Activity;import android.content.Context;import android.content.Intent;import com.facebook.Request;import com.facebook.Response;import com.facebook.Session;import com.facebook.SessionState;import com.facebook.Request.GraphUserCallback;import com.facebook.model.GraphUser;public class FacebookLogin{ private Activity activity; public FacebookLogin(Activity activity) { this.activity = activity; } private LoginCallBack loginCallBack; public void onActivityResult(int requestCode, int resultCode, Intent data) { onActivityResult(activity, requestCode, resultCode, data); } /** * Login */ public void login() { login(activity); } /** * onActivityResult * @param context * @param requestCode * @param resultCode * @param data */ private void onActivityResult(Context context, int requestCode, int resultCode, Intent data) { if (context instanceof Activity) { Session.getActiveSession().onActivityResult((Activity) context, requestCode, resultCode, data); } } /** * Login * @param context */ private void login(Context context) { Session.openActiveSession((Activity) context, true, new Session.StatusCallback() { // callback when session changes state @Override public void call(Session session, SessionState state, Exception exception) { if (session.isOpened()) { getUserInfo(session); } } }); if (loginCallBack != null) { loginCallBack.onPreLogin(); } } private void getUserInfo(final Session session) { Request request = Request.newMeRequest(session, new GraphUserCallback() { @Override public void onCompleted(GraphUser user, Response response) { try { if (loginCallBack != null) { if (user != null) { loginCallBack.onLoginSuccess(user); } else { loginCallBack.onError(); } } } catch (Exception e) { e.printStackTrace(); loginCallBack.onError(); } } }); request.executeAsync(); } /** * Logout from Facebook */ public void logout() { Session session = Session.getActiveSession(); if (session != null) { if (!session.isClosed()) { session.closeAndClearTokenInformation(); } } else { session = new Session(activity); Session.setActiveSession(session); session.closeAndClearTokenInformation(); } } public void setLoginCallBack(LoginCallBack loginCallBack) { this.loginCallBack = loginCallBack; } public interface LoginCallBack { void onPreLogin(); void onLoginSuccess(GraphUser user); void one rror(); }}
Android--Facebook Login without LoginButton
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