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我試圖在我的應用程序中實現Facebook。林能夠發佈一個標題，一個標題和一個鏈接，使用此代碼：試圖張貼到Facebook的位圖
Bundle postParams = new Bundle();
postParams.putString("name", "TestingApp");
postParams.putString("caption","Testing");
postParams.putString("description","ImageFilter makes your day brighter!");
postParams.putString("picture","https://raw.github.com/fbsamples/ios-3.x-howtos/master/Images/iossdk_logo.png");
Request request = new Request(session, "me/feed", postParams,
HttpMethod.POST, callback);
，不過爲什麼我supposted張貼當地形象？
我已經試過這段代碼，但它給出了一個空指針異常！
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
postParams.putByteArray("picture", byteArray);
堆棧跟蹤：
05-25 18:21:22.009: E/AndroidRuntime(22803): FATAL EXCEPTION: main
05-25 18:21:22.009: E/AndroidRuntime(22803): java.lang.NullPointerException
05-25 18:21:22.009: E/AndroidRuntime(22803): at com.example.facebooktesting.MainActivity$2.onCompleted(MainActivity.java:147)
05-25 18:21:22.009: E/AndroidRuntime(22803): at com.facebook.Request$4.run(Request.java:1240)
05-25 18:21:22.009: E/AndroidRuntime(22803): at android.os.Handler.handleCallback(Handler.java:615)
05-25 18:21:22.009: E/AndroidRuntime(22803): at android.os.Handler.dispatchMessage(Handler.java:92)
05-25 18:21:22.009: E/AndroidRuntime(22803): at android.os.Looper.loop(Looper.java:137)
05-25 18:21:22.009: E/AndroidRuntime(22803): at android.app.ActivityThread.main(ActivityThread.java:4898)
05-25 18:21:22.009: E/AndroidRuntime(22803): at java.lang.reflect.Method.invokeNative(Native Method)
05-25 18:21:22.009: E/AndroidRuntime(22803): at java.lang.reflect.Method.invoke(Method.java:511)
05-25 18:21:22.009: E/AndroidRuntime(22803): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
05-25 18:21:22.009: E/AndroidRuntime(22803): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
05-25 18:21:22.009: E/AndroidRuntime(22803): at dalvik.system.NativeStart.main(Native Method)
謝謝！
不錯的問題兄弟。 –