CODEWITHSUNDEEP
javaandroidandroid-fragments
VansFannel
VansFannel

Reputation: 45921

Can't do ProgressDialog.show() on a Fragment

I'm developing an Android application and I have this AsynTask in a Fragment:

private class SendUserDatasAsynTask extends AsyncTask<User, Void, String>
{
    private Context mContext;
    private ProgressDialog loadingDialog;

    SendUserDatasAsynTask(Context context)
    {
        this.mContext = context;
    }

    @Override
    protected void onPreExecute()
    {
        loadingDialog = new ProgressDialog(mContext);
        loadingDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        loadingDialog.setMessage(getString(R.string.dialog_message_sending_user_data));
        loadingDialog.setCancelable(false);
        loadingDialog.show();

        super.onPreExecute();
    }
    @Override
    protected String doInBackground(User... users)
    {   
        return SpringController.sendUserPersonalData(users[0]);
    }

    protected void onPostExecute(String result)
    {
        loadingDialog.dismiss();
        Toast.makeText(MSDApplication.getAppContext(), result, Toast.LENGTH_LONG).show();
    }
}

But when I execute the task I get this error:

06-21 13:52:42.559: E/AndroidRuntime(513): Caused by: android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
at android.view.ViewRoot.setView(ViewRoot.java:509)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
at android.app.Dialog.show(Dialog.java:241)
at com.mycompany.mxt.fragments.UserProfileFragment$SendUserDatasAsynTask.onPreExecute(UserProfileFragment.java:635)
at android.os.AsyncTask.execute(AsyncTask.java:391)
at com.mycompany.mxt.fragments.UserProfileFragment.sendDataToWebService(UserProfileFragment.java:588)
at com.mycompany.mxt.fragments.UserProfileFragment.onAcceptUserProfileClick(UserProfileFragment.java:477)

Do you know what is happening?

Upvotes: 1

Views: 1673

Answers (2)

Plato
Plato

Reputation: 2348

Your problem might be the context you use in SendUserDatasAsynTask(Context context).
Make sure you pass your Activity as context and not the ApplicationContext.

So inside your fragment change your asynctask's initialization to
SendUserDatasAsynTask myTask = new SendUserDatasAsynTask(getActivity());

Upvotes: 4

TronicZomB
TronicZomB

Reputation: 8747

Try using the following:

Dialog.show(getFragmentManager(), "TAG");

This works when calling from the main activity, not sure about an AsyncTask.

Upvotes: 0

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