Error on application ID of facebook app in Manifest

Question

Here is a little detail about my app. I have a tab layout using Fragments and a ViewPager. On the third tab, I have a Google Map V2. Now, whenever

Answer 1

You cannot put the appID directly into the manifest itself, you need to reference a string resource in the manifest. Something like:

In your AndroidManifest:

<meta-data android:name="com.facebook.sdk.ApplicationId" android:value="@string/app_id"/>

In your strings.xml

<resources>
  ...
  <string name="app_id">$app_id_here</string>
</resources>

Answer 2

Shouldn't that actually be:

<meta-data android:name="com.facebook.sdk.ApplicationId" android:resource="@string/app_id"/>

Note the change from android:value to android:resource.

Answer 3

It is important to bear in mind that you have to paste the meta-data element WITHIN THE APPLICATION TAGS.

This way:

 <application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <meta-data android:name="com.facebook.sdk.ApplicationId"
        android:value="@string/facebook_app_id"/>
</application>

If you paste it somewhere else, you will keep getting this error.

Answer 4

Incase anyone is still having problems with this, here's the solution I found:

I was still getting a manifest merge error when I made these changes. I noticed that if I changed android:value to android:resource, I could fire off the app but it would still crash when I tried to launch facebook. I found the solution while in the "Merged Manifest" tab at the bottom of the screen when looking at the android Manifest.xml. Code as follows:

<meta-data
   android:name="com.facebook.sdk.ApplicationId"
   tools:replace="android:value"
   android:value="@string/facebook_app_id" />

Notice the tools:replace="android:value" comes before android:value This is important for the flow and fixed my problem.

Hope this helps!