Facebook SDK Android Null指針異常

Question

所以在經歷了很多麻煩和混亂之后，我終於在我的項目nd中配置了facebook sdk，當我試圖實現Log in類時，它拋出了以下異常：我試圖用我的數字ID代替@ string / address替換ApplicationId。 。，但清單不接受此格式。.plz幫助

03-27 20:01:51.716: D/jdwp(15472): sendBufferedRequest : len=0x43
03-27 20:01:51.807: D/ActivityThread(15472): BIND_APPLICATION handled : 0 / AppBindData{appInfo=ApplicationInfo{417c3138 com.example.widgittest}}
03-27 20:01:51.966: D/AndroidRuntime(15472): Shutting down VM
03-27 20:01:51.967: W/dalvikvm(15472): threadid=1: thread exiting with uncaught exception (group=0x40eb9258)
03-27 20:01:51.978: E/AndroidRuntime(15472): FATAL EXCEPTION: main
03-27 20:01:51.978: E/AndroidRuntime(15472): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.widgittest/com.example.widgittest.testAct}: java.lang.NullPointerException: Argument 'applicationId' cannot be null
03-27 20:01:51.978: E/AndroidRuntime(15472):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2077)
03-27 20:01:51.978: E/AndroidRuntime(15472):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2104)
03-27 20:01:51.978: E/AndroidRuntime(15472):    at android.app.ActivityThread.access$600(ActivityThread.java:134)
03-27 20:01:51.978: E/AndroidRuntime(15472):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247)
03-27 20:01:51.978: E/AndroidRuntime(15472):    at android.os.Handler.dispatchMessage(Handler.java:99)
03-27 20:01:51.978: E/AndroidRuntime(15472):    at android.os.Looper.loop(Looper.java:154)
03-27 20:01:51.978: E/AndroidRuntime(15472):    at android.app.ActivityThread.main(ActivityThread.java:4624)
03-27 20:01:51.978: E/AndroidRuntime(15472):    at java.lang.reflect.Method.invokeNative(Native Method)
03-27 20:01:51.978: E/AndroidRuntime(15472):    at java.lang.reflect.Method.invoke(Method.java:511)

Answer 1

您如何定義您的applicationID？

這是我在一個應用程序中定義我的方式：

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

然后在strings.xml中

<string name="app_id">1234569xxxxxxxx</string>

現在應該對您有用。