...facebook添加...

app/build.gradle

@@ -89,4 +89,6 @@ dependencies {
     implementation("stax:stax-api:1.0.1")//处理XML文档的Java API
 
 
+    //facebook
+    implementation("com.facebook.android:facebook-android-sdk:[8,9)")
 }
\ No newline at end of file

app/src/main/AndroidManifest.xml

@@ -78,6 +78,11 @@
                 android:resource="@xml/file_paths" />
         </provider>
 
+        <meta-data
+            android:name="com.facebook.sdk.ApplicationId"
+            android:value="@string/facebook_app_id" />
+
+
     </application>
 
 </manifest>
\ No newline at end of file

app/src/main/res/values/strings.xml

 <resources>
     <string name="app_name">Super PDF Reader</string>
     <string name="hello_blank_fragment">Hello blank fragment</string>
+    <string name="facebook_app_id">11</string>
 </resources>
\ No newline at end of file