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PONull Pointer Exception when posting a Video to Facebook wall (android)
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copied!<p>My app is meant to allow users to upload a video to their Facebook wall. The following code is very similar to many other examples of working code This code gives me the null pointer exception:</p> <p>Here is my main class:</p> <p>public class MainActivity extends Activity {</p> <pre><code>Session session; Facebook facebook=new Facebook("367714506687419"); private int mAuthAttempts = 0; String access_token=null; long expires=0; Context context; String Permissions[]=new String[] { "publish_stream", "read_stream" , "video_upload" , "publish_actions" }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button logout=(Button) findViewById(R.id.logout); context=this; Button upload_video=(Button) findViewById(R.id.upload_video); // start Facebook Login Session.openActiveSession(this, true, new Session.StatusCallback() { @Override public void call( Session session, SessionState state, Exception exception) { if (session.isOpened()) { // make request to the /me API Request.executeMeRequestAsync(session, new Request.GraphUserCallback() { // callback after Graph API response with user object @SuppressWarnings("deprecation") @Override public void onCompleted(GraphUser user, Response response) { if (user != null) { TextView welcome = (TextView) findViewById(R.id.welcome); welcome.setText("Hello " + user.getName() + "!"); if (access_token != null) { facebook.setAccessToken(access_token); } if (expires != 0) { facebook.setAccessExpires(expires); } if (!facebook.isSessionValid()) { facebook.authorize(MainActivity.this, Permissions, new DialogListener(){ @Override public void onComplete(Bundle values) { access_token=facebook.getAccessToken(); expires=facebook.getAccessExpires(); } @Override public void onFacebookError(FacebookError e) { // TODO Auto-generated method stub } @Override public void onError(DialogError e) { // TODO Auto-generated method stub } @Override public void onCancel() { // TODO Auto-generated method stub } }); } } } }); } } }); upload_video.setOnClickListener(new OnClickListener() { @SuppressWarnings("deprecation") @Override public void onClick(View arg0) { if(session.isOpened()){ //String dataPath = "/mnt/sdcard/DCIM/Camera/VID_20130725_023450.mp4"; String path="/sdcard/DCIM/Camera/1.mp4"; byte[] data = null; String dataPath = "/sdcard/DCIM/Camera/1.mp4"; String dataMsg = "Your video description here."; String dataName = "1.mp4"; Bundle param; facebook = new Facebook("367714506687419"); AsyncFacebookRunner mAsyncRunner = new AsyncFacebookRunner(facebook); InputStream is = null; try { is = new FileInputStream(dataPath); data = readBytes(is); param = new Bundle(); param.putString(Facebook.TOKEN, access_token); param.putString("message", dataMsg); param.putByteArray("video", data); //param.putString("filename", dataName); mAsyncRunner.request("me/videos", param, "POST", new fbRequestListener(), null); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } else{ Log.d("Please Check ur access tocken", ""); } } }); </code></pre> <p>And Here is fbRequestListener.java</p> <p>public class fbRequestListener implements RequestListener {</p> <pre><code>@Override public void onComplete(String response, Object state) { Log.e("response", response); } @Override public void onIOException(IOException e, Object state) { Log.e("", "onIOException"); e.printStackTrace(); } @Override public void onFileNotFoundException(FileNotFoundException e, Object state) { Log.e("", "onFileNotFoundException"); e.printStackTrace(); } @Override public void onMalformedURLException(MalformedURLException e, Object state) { Log.e("", "onMalformedURLException"); e.printStackTrace(); } @Override public void onFacebookError(FacebookError e, Object state) { Log.e("", "onFacebookError"); e.printStackTrace(); } </code></pre> <p>}</p> <p>Log Cat is :</p> <p>FATAL EXCEPTION: Thread-1044 java.lang.NullPointerException</p> <p>at libcore.net.UriCodec.decode(UriCodec.java:149)</p> <p>at java.net.URLDecoder.decode(URLDecoder.java:45)</p> <p>at com.facebook.android.Util.openUrl(Util.java:186)</p> <p>at com.facebook.android.Facebook.requestImpl(Facebook.java:806)</p> <p>at com.facebook.android.AsyncFacebookRunner$2.run(AsyncFacebookRunner.java:**</p>

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