Android: progress dialog not showing

Question

I have some data that I upload to the database the first time a user logs into mine Activityand want to show ProgressDialogwhile this data is being loaded for the first time. My activity is this ExpandableListActivity, and I do not create SimpleExpandableListAdapteror call setListAdapterby passing my adapter until I’m sure that the data is actually there. My onCreatelooks like this:

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mCategoryDbHelper = new CategoryDBHelper(this);

        // Build default categories... if not there yet
        CategoryDbBuilder builder = new CategoryDbBuilder(this);
        if (!builder.hasCategoriesInTable()) {
            showDialog(PROGRESS_DIALOG_ID);
            builder.fillDbWithDefaultCategories();
            removeDialog(PROGRESS_DIALOG_ID);
        }

        populate();
    }

I rewrote onCreateDialogas such:

@Override
    protected Dialog onCreateDialog(int id) {
        switch (id) {
            case PROGRESS_DIALOG_ID: {
                ProgressDialog dialog = new ProgressDialog(this);
                dialog.setMessage("Loading categories for the first time. Please wait...");
                dialog.setIndeterminate(true);
                dialog.setCancelable(false);
                return dialog;
            }       
        }
        return null;
    }

The method populate()reads the database and configures my list adapter, and then calls setListAdapter.

It seems like it should be simple, but it becomes a huge pain. Any help would be greatly appreciated. :-)

Answer 1

AsynTask, . -, , , asynTask

Android -

Answer 2

:

mProgressDialog = ProgressDialog.show(context, "", "msg to show", true);

:

mProgressDialog.dismiss();