้hey guy i error codeing spotsDialog java.lang.NullPointerException:

[PongPloy2016]

I catch error progressbar

if (spotsDialog != null) {

                spotsDialog.dismiss();
                spotsDialog = null;
            } else {
                spotsDialog.dismiss();
                spotsDialog = null;
            }

and show logcaat

Process: th.co.siamkubota.kubota, PID: 24287
java.lang.NullPointerException: Attempt to invoke virtual method 'void dmax.dialog.SpotsDialog.dismiss()' on a null object reference
at th.co.siamkubota.kubota.fragment.UnfinishTaskFragment$1.onPostExecute(UnfinishTaskFragment.java:308)
at th.co.siamkubota.kubota.fragment.UnfinishTaskFragment$1.onPostExecute(UnfinishTaskFragment.java:221)
at android.os.AsyncTask.finish(AsyncTask.java:636)
at android.os.AsyncTask.access$500(AsyncTask.java:177)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:653)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:6856)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)

[dybarsky]

Hi! You have a wrong logic. I believe else block is unnecessary :)

[matloobn73]

If (spotsDialog != Null){
//If spotsDialog is not null.
spotsDialog.dismiss;
spotsDialog = null;
}else{
//If spotsDialog is null.
//You can't do anything with spotsDialog as it is null.
//You don't have to call spotsDialog.dismiss as it is already null and hence dismissed.
}

[PongPloy2016]

If (spotsDialog != Null){
//If spotsDialog is not null.
spotsDialog.dismiss;
spotsDialog = null;
}else{
//If spotsDialog is null.
//You can't do anything with spotsDialog as it is null.
//You don't have to call spotsDialog.dismiss as it is already null and hence dismissed.
}

thank you bro i check null
If (spotsDialog != Null){
.....
}

and run project and show catch error In perhaps : Attempt to invoke virtual method 'void dmax.dialog.SpotsDialog.dismiss()' on a null object reference to some time