Facebook喜歡按鈕無法在Android應用程序中工作

Question

在我的Android應用程序中有一個類似Facebook的按鈕。 但是當點擊它時我得到了這個錯誤。

java.lang.NullPointerException: Argument 'activity' cannot be null
                  at com.facebook.internal.Validate.notNull(Validate.java:36)
                  at com.facebook.internal.FacebookDialogBase.<init>(FacebookDialogBase.java:53)
                  at com.facebook.share.internal.LikeDialog.<init>(LikeDialog.java:67)
                  at com.facebook.share.internal.LikeActionController.presentLikeDialog(LikeActionController.java:824)
                  at com.facebook.share.internal.LikeActionController.toggleLike(LikeActionController.java:698)
                  at com.facebook.share.widget.LikeView.toggleLike(LikeView.java:569)
                  at com.facebook.share.widget.LikeView.access$300(LikeView.java:52)
                  at com.facebook.share.widget.LikeView$1.onClick(LikeView.java:519)
                  at com.facebook.FacebookButtonBase$1.onClick(FacebookButtonBase.java:312)
                  at android.view.View.performClick(View.java:4496)
                  at android.view.View$PerformClick.run(View.java:18603)
                  at android.os.Handler.handleCallback(Handler.java:733)
                  at android.os.Handler.dispatchMessage(Handler.java:95)
                  at android.os.Looper.loop(Looper.java:136)
                  at android.app.ActivityThread.main(ActivityThread.java:5433)
                  at java.lang.reflect.Method.invokeNative(Native Method)
                  at java.lang.reflect.Method.invoke(Method.java:515)
                  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
                  at dalvik.system.NativeStart.main(Native Method)

這是我的Facebook代碼按鈕

LikeView likeView = (LikeView) findViewById(R.id.likeView);
likeView.setLikeViewStyle(LikeView.Style.STANDARD);      
likeView.setAuxiliaryViewPosition(LikeView.AuxiliaryViewPosition.INLINE);
likeView.setObjectIdAndType(
    "http://inthecheesefactory.com/blog/understand-android-activity-
     launchmode/en",
      LikeView.ObjectType.OPEN_GRAPH)

這是xml文件中like按鈕的代碼。

<com.facebook.share.widget.LikeView
                android:id="@+id/likeView"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="10dp"/>

我該怎么解決呢

Answer 1

嘗試這個：

btnLike = (LikeView) findViewById(R.id.btnLike);
btnLike.setObjectIdAndType("https://www.facebook.com/androidlift", LikeView.ObjectType.PAGE);

Answer 2

試着改變

likeView.setObjectIdAndType(
"http://inthecheesefactory.com/blog/understand-android-activity-
 launchmode/en",
  LikeView.ObjectType.OPEN_GRAPH)

同

likeView.setObjectIdAndType(
"http://inthecheesefactory.com/blog/understand-android-activity-
 launchmode/en",
  LikeView.ObjectType.PAGE

）