I am using ViewPager. I have 3 fragments (A,B,C) and two of them(A & C) are populating ListView from the server, so it will take a few seconds for that. And I am showing a ProgressDialog. B is the fragment which is set to show first and its is not having any background process, having a few buttons only.
So the problem is that the ProgressDialog will always show upon creating that activity,that is all the Fragments are loaded always.
So I wonder if I can load the specific Fragment only (A or C) when I open it (Slide) so that the user who want to use the Icon menu (B fragment) should not need to wait for the other fragments (A & C) to load. I am not sure whether its possible or not. Can anyone suggest me any code snippets or references to achieve it. Any help regarding this will be really appreciated.
Nevermind, I had done it easily with AsyncTask and the Fragments are updated in background
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I am developing an app in which I have an on boarding. I have a "next" button at the bottom of the layout which will load the next fragment. The problem is how to do this when I will have to go through 8 fragments. The order in which the fragments will be displayed, never changes. Should I use a counter or should I ask which fragment is being displayed and then go to the next? Any help is welcomed, thanks.
I'm making an app with 4 tabs, the third one is ListView with data parsed from xml by AsyncTask.
I've got a problem with throbber (circle progress bar) which shows on a previous tab and I can't find solution of it.
Does anybody knows how to prevent this kind of pre-loading when AsyncTask starts on previous tab, not on ListView (third) tab?
There is no way to prevent pre-loading fragments in ViewPager.
But you can use some external libraries to take that result.
For example, ViewPagerExtensions or ViewPagerIndicator.
The issue i am running in to is something i have tried to search for continuously.
I have a fragment(FRAGMENT A) that I use to load custom views in too. Each of those views contain textviews which are populated by running an asynctask to get values. Now I have a button that i use to load a new fragment(FRAGMENT B) which allows me to edit one of those values in my custom views and then it calls popbackstack going back to (FRAGMENT A). onResume(Fragment A).
I rerun the async task to get the new values but it does not update.
I have tried multiple things but it does not seem to work. Please help.
The way I got around that was to simply put a small delay before running the get values procedure after the FRAGMENT B comes back to FRAGMENT A.
I am developing an app in Android using Fragments. I have this three tabs:
I know that is not possible to prevent the load of one fragment on each side (previous and next) as far as the minimum value of setOffScreenPageLimit() is 1 but does it mean that if I want to show a ProgressDialog on the onPreExecute method of an AsyncTask running within Descargas Fragment this will cause that when I nav to the Capturador that ProgressDialog will be necessarily loaded? If yes I have no idea of how to let the user know that I am downloading the packages (that's what Descargas does, to parse some XML).
Thanks in advance ;)
Embed a ProgressBar on the Descargas fragment. Or overlay an indeterminate progressbar over the center of the fragment while it loads.
Dialogs are really part of the activity, it wouldn't make sense that it's only applicable to one of the pages.
At the end of the day though if you must insist on using dialogs, you can implement an onPageChangeListener
viewPager.setOnPageChangeListener(OnPageChangeListener);
And you can pull up the appropriate dialog when the designated fragment is selected and the opposite when you navigate away.
I currently have a TabActivity which has 4 tabs, within one of the tab's I want to be able to move forward and back between 4 different Activities.
However if I try to start a new Activity now it removes the TabActivty and starts a whole new Activity with no tab bars.
I have read about using view groups but that this is not best practice and also about using a view flipper but this doesn't seem to let me switch between different Activities only change the views within the Activity. I can't implement back functionality for exa,ple.
Can anyone point me in the right direction as to what I should be looking for as a solution to this?
EDIT:
Some more information:
Within the TabActivity my first screen will be a ListView that contains 4 rows, then selecting one of these will in turn load another ListView with 2 rows again within the TabActivity and then the 3rd screen will just contain some text depending on which option the user chose again within the Tab Activity.
Is a ViewFlipper the best solution here? It seems to me that it will require a lot of coding within one Activity if I use the ViewFlipper?
I have done something similar. I used the ViewFlipper to achieve this. You can override onBackPressed in your Activity so you can deal with moving back through your views.
There's a couple of ways of doing this but a simple way would be to just increment a counter in your Activity as you move to the next views, then in your onBackPressed method if counter != 0 just show the previous view, if counter == 0 call super.onBackPressed.
You can see in my video showing what the result could look like (ignore the bug being shown in the video).