How to integrate facebook into android using facebook sdk 4.10

Question

Hi, when I use the login button in my XML, I get an exception, for example: "The following classes cannot be created: - com.facebook.login.widget.LoginButton (Open Class, Show Error Log)". How can I solve this problem. I need to display the login page, how can I do this?

and this is my xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.example.facebooklogin.MainActivity$PlaceholderFragment" > <com.facebook.login.widget.LoginButton android:id="@+id/login_button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:layout_marginTop="30dp" android:layout_marginBottom="30dp" /> </Relative Layout> 

Answer 1

This is the xml code of fb sdk example like this

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:facebook="http://schemas.android.com/apk/res-auto" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#FFF" > <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#FFF" android:id="@+id/main_ui_container"> <com.facebook.login.widget.LoginButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="5dp" android:layout_gravity="center_horizontal" facebook:confirm_logout="false" facebook:tooltip_mode="never_display" /> <LinearLayout android:layout_width="150dp" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:gravity="center_horizontal" android:orientation="vertical" > <TextView android:id="@+id/greeting" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:layout_gravity="center" android:textColor="#333" android:textSize="18sp"/> <com.facebook.login.widget.ProfilePictureView android:id="@+id/profilePicture" android:layout_height="wrap_content" android:layout_width="wrap_content" android:gravity="center_horizontal" android:layout_marginBottom="10dp" facebook:preset_size="normal"/> <Button android:id="@+id/postStatusUpdateButton" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Post Status Update" /> <Button android:id="@+id/postPhotoButton" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Post Photo" /> </LinearLayout> </LinearLayout> </LinearLayout> 

And a Mainfeast file like this

 <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.facebook.samples.hellofacebook" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="9"/> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <application android:label="@string/app_name" android:icon="@drawable/icon" android:theme="@android:style/Theme.NoTitleBar" > <activity android:name=".HelloFacebookSampleActivity" android:label="@string/app_name" android:windowSoftInputMode="adjustResize"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity> <activity android:name="com.facebook.FacebookActivity" android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation" android:theme="@android:style/Theme.Translucent.NoTitleBar" android:label="@string/app_name" /> <meta-data android:name="com.facebook.sdk.ApplicationId" android:value="@string/app_id"/> <meta-data android:name="com.facebook.sdk.ApplicationName" android:value="@string/facebook_app_name" /> <provider android:authorities="com.facebook.app.FacebookContentProvider355198514515820" android:name="com.facebook.FacebookContentProvider" android:exported="true"/> <receiver android:name="com.facebook.samples.hellofacebook.HelloFacebookBroadcastReceiver"> <intent-filter> <action android:name="com.facebook.platform.AppCallResultBroadcast" /> </intent-filter> </receiver> </application> </manifest>