Android facebook applicationId cannot be null

Question

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

Answer 1

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);
    }
}

Answer 2

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>

Answer 3

This little code modification at the activity helped me.

@Override
    protected void onCreate(Bundle savedInstanceState) {

        FacebookSdk.sdkInitialize(getApplicationContext());
        AppEventsLogger.activateApp(getApplication());

        super.onCreate(savedInstanceState);
        ...................
        ...................    
}

Answer 4

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"'

Answer 5

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>