So, I'm trying to implement a login Button using Fragment. The documentation on facebook site is just a little bit confusing. My app crashes even on the start. There is no error in build. Here is my code.. If someone can help me I'd be grateful!!
MainActivity.java:
public class MainActivity extends FragmentActivity {
private CallbackManager callbackManager;
// private Fragment mainfrag=new Fragment();
private AccessTokenTracker accessTokenTracker;
private boolean isResumed = false;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getApplicationContext());
callbackManager = CallbackManager.Factory.create();
accessTokenTracker = new AccessTokenTracker() {
@Override
protected void onCurrentAccessTokenChanged(AccessToken oldAccessToken, AccessToken currentAccessToken) {
}
};
setContentView(R.layout.activity_main);
}
activity_main.xml:
<LinearLayout 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:background="@drawable/bg"
android:orientation="vertical"
android:weightSum="1">
<ImageView
android:layout_width="300dp"
android:layout_height="100dp"
android:layout_gravity="center"
android:src="@drawable/banner" />
<fragment
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:name="com.moviere.MainFragment"
android:id="@+id/fragment"
android:layout_gravity="center_horizontal"
android:layout_weight="0.17" />
fragment_main.xml:
<FrameLayout 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" tools:context="com.moviere.MainFragment">
<TextView android:layout_width="match_parent" android:layout_height="match_parent"
android:text="@string/hello_blank_fragment"
android:gravity="center_horizontal" />
<com.facebook.widget.LoginButton
android:id="@+id/login_button"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|top"
android:layout_marginTop="30dp" />
and at last MainFragment.java:
public class MainFragment extends Fragment {
private CallbackManager callbackManager;
private LoginButton loginButton;
public MainFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater,ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_main, container, false);
loginButton = (LoginButton) view.findViewById(R.id.login_button);
loginButton.setReadPermissions("user_friends");
// If using in a fragment
loginButton.setFragment(this);
// Other app specific specialization
// Callback registration
loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
Toast.makeText(getActivity(),"Success",Toast.LENGTH_SHORT).show();
}
@Override
public void onCancel() {
Toast.makeText(getActivity(),"fail",Toast.LENGTH_SHORT).show();
}
@Override
public void onError(FacebookException exception) {
Toast.makeText(getActivity(),"error", Toast.LENGTH_SHORT).show();
}
});
return view;
}
Edit: Android Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.moviere" >
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<meta-data android:name="com.facebook.sdk.ApplicationId" android:value="@string/facebook_app_id"/>
<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" />
</application>
