Android facebook applicationId cannot be null
AndroidFacebookAndroid Problem Overview
I've been following the following tutorial to integrate my app with Facebook. Facebook tutorial
I've followed everything on the tutorial, but I've been getting applicationId cannot be null
in two cases, and it's really frustrating.
My FacebookActivity
onCreate
has the following, which is exactly the same as the tutorial:
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
uiHelper = new UiLifecycleHelper(this, callback);
uiHelper.onCreate(savedInstanceState);
setContentView(R.layout.main_fb);
FragmentManager fm = getSupportFragmentManager();
fragments[SPLASH] = fm.findFragmentById(R.id.splashFragment);
fragments[SELECTION] = fm.findFragmentById(R.id.selectionFragment);
FragmentTransaction transaction = fm.beginTransaction();
for(int i = 0; i < fragments.length; i++)
{
transaction.hide(fragments[i]);
}
transaction.commit();
}
However when I try to display the activity I get applicationId cannot be null
, and the line LogCat points me to is: uiHelper.onCreate(savedInstanceState);
So then I tried commenting out that line, and the activity is displayed. However now when I click on the LoginButton
, I get the same error but this time is points me to the applicationId field in the LoginButton class from facebook.
I already have the Id in my string values and my manifest like this:
<meta-data android:name="com.facebook.sdk.ApplicationId" android:value="@string/APP_ID"/>
I tried getting the Id using code, but nothing changed.
What exactly is causing all this?
Android Solutions
Solution 1 - Android
> TL;DR: you have to write your application's ID in your strings.xml
and then reference (i.e. @strings/fb_app_id
), because if you put it directly (as value) into AndroidManifest.xml
it won't work.
you must define your applicationId
in the AndroidManifest.xml
like this:
<meta-data android:name="com.facebook.sdk.ApplicationId" android:value="@string/app_id"/>
under <application android:label="@string/app_name"....
tag
where app_id
is a string within your strings.xml
.
sample:
<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.LoginActivity"
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"/>
</application>
** please note <meta-data android:name="com.facebook.sdk.ApplicationId" android:value="@string/app_id"/>
is within <application>
tag
-- and in strings.xml
<string name="app_id">1389xxxxxxxx</string>
Solution 2 - Android
Since today the answer is not quite correct.
If someone didn't use this:
AppEventsLogger.activateApp(this);
Since last update you must do it or your app will crashed. And you also should pass Application here not Context
https://developers.facebook.com/docs/android/getting-started
// Add this to the header of your file:
import com.facebook.FacebookSdk;
public class MyApplication extends Application {
// Updated your class body:
@Override
public void onCreate() {
super.onCreate();
// Initialize the SDK before executing any other operations,
FacebookSdk.sdkInitialize(getApplicationContext());
AppEventsLogger.activateApp(this);
}
}
Solution 3 - Android
The problem is that the id is being converted to integer: https://code.google.com/p/android/issues/detail?id=78839
In my case the facebook_app_id
was being set from the build.gradle
file per flavor.
The solution was to wrap the id with "
:
flavor.resValue "string", "facebook_app_id", "\"1111111111111\""
or if you would rather avoid escaping:
flavor.resValue "string", "facebook_app_id", '"1111111111111"'
Solution 4 - Android
This little code modification at the activity helped me.
@Override
protected void onCreate(Bundle savedInstanceState) {
FacebookSdk.sdkInitialize(getApplicationContext());
AppEventsLogger.activateApp(getApplication());
super.onCreate(savedInstanceState);
...................
...................
}
Solution 5 - Android
Actually you do not have to use flavor codes in gradle...
if you have number longer than 4 Bytes, you should this code in strings.xml
> Note: Attention this quotation mark (")
<string name="facebook_app_id">"1111111111111"</string>