Android :: Modifying Application Workflow To Use TabActivity

Aug 2, 2010

This question actually has two parts.

The first part:

I've been developing my first app for a couple of weeks now. I have 5 screens and everything seems well. However, I'm considering changing the app's navigation to a TabView.

I haven't delved much into it, but I'm hoping someone can save me a little bit of time. It seems that people don't generally place Activities inside each tab. They simply point the tab content to a View. This is where my major setbacks are. 1) I already have Activity classes full of code and 2) I can't quickly guess how the structure of an app using TabView looks. For example, where do I put the handler code for clicking a button on a View? Does it all just get dumped into the TabView Activity somehow?

What I would like is if you could please give me a quick synopsis of what I'm looking at doing, answers to any questions you think I may have, and point me toward some resources for creating TabView applications. A quick Google search really just shows me how to create a TabView Activity and add a couple tabs to it. The code doesn't go any deeper. For example, say I have a layout xml to show in one of my tab's content pane, where does the code go for clicking a button I have in that layout?

The second part:

I've added a TabActivity to wrap the Activities I currently have in. At the moment I have Activities populating the content of my tabs (though ultimately I'd like to do this in the most efficient fashion, which doesn't seem to be having Activities be tab content). I've noticed something rather annoying. My MAIN Activity is an Activity I wrote for my user to log in to their account. After logging in, they are taken to my Tab Activity. Here is what happens:

When I am on my Tab Activity and I "minimize" the app by clicking the Home button and then launch it again, I don't get taken back to the Tab Activity. I get taken to my log in Activity. Why? I don't have the launchMode of my Tab Activity set to singleInstance... or is it singleInstance by default? How can I make the app re-launch showing the Tab Activity (ideally by setting some parameter, assuming I'm doing something wrong, and not having to save this data off somewhere and reading it and programmatically telling it what to go to)?

Android :: Modifying application workflow to use TabActivity


Android :: Tabbed Application With Location Listener Implemented In TabActivity TabHost

Sep 25, 2010

I have an application that has a tabActivity and 3 tabs. all off the tabs use a location listener and work with locations. i implement onPause and onResume for every tab to remove and start listening for location accordingly. is this the right way to go? i had another idea to work with and that was implementing a location listener to the tabActivity and doing broadcasts to the child tabs with the location, but it seemed more complicated.

The problem with my current solution is that whenever i switch tab i lose the location i got in the previous and i cant use getlastknown location because i dont want the last location on start of the application.(does this make sense?) what can i do to solve this problem. a thing that will work better will be to have one variable that will hold the last location from the onLocationChanged and i can observe its changes and call methods onChange.

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Motorola Droid :: Modifying The Application Tab

Nov 8, 2009

Has anyone had any success in modifying the apps tab? Is it possible to change the view? Instead of all icons from left to right can they be changed to a list view? Can you add folders to separate system tools from others such as games and etc...?

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Motorola :: Need A Good Android Development Workflow

Mar 23, 2010

I'm interested in developing android applications. I've a background of Java/Swing/C++/ajax developer so I think I may find myself at home. As I installed the SDK I noticed that I can't follow my usual java development scheme: building base libraries, then the final app. In fact I'd like to develop libs and test them in a more convenient environment like, Swing. There is no way I can use android libs in pure swing apps. Do you have any suggestion about these topics and what's your development process?

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Android :: Way To Allow For Pre / Post-processing Of All Notifications And Additional Workflow?

Nov 2, 2010

Or extend it in some way to allow for pre/post-processing of all notifications and additional workflow?

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Workflow When Loading Data From Server And Filling Activity Listview

Feb 7, 2013

I'm pretty new to Android development and I just hit a brick wall in the development of an app, I'm currently working on.

The problem is that I have a list of locations (states), and when one is selected, a list of cities from that state is loaded via http request and JSON and then is supposed to be inserted into a listview in another activity.

So now I have the StateList activity and the CityList activity. Currently, the statelist activity starts the citylist activity via an intent and gives it a state name. Then, the citylist activity uses that name and requests data from a server via AsyncTask. As result I get an array of City objects, which are supposed to be inserted into an adapter for a listview.

Now begins my problem: I don't want the second activity to show up before all data is loaded. I also don't want the first activity to do the request and then have to transfer the whole result to the second activity using intent extras.

So what would I have to do now to have the second activity load all the data and only then really show up? I tried only setting the content view after receiving the data, but since the base class onCreate() is tied to some manipulation of the layout, I would also have to call onCreate() at that point, which is not allowed.

Here some code snippets of what I tried already:

The onCreate() method of my second activity (which is supposed to hide):
[high]protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
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CitylistRequest request = new CitylistRequest(this, new State(0, getIntent().getExtras().getString("state")));
request.execute();

[Code]...

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Android :: Add Footer In TabActivity

Jun 15, 2009

I created a TabActivity with contains 3 tabs. Each tab's content sets different Intents.I would like to add a "footer" wich will appear on each tab. So I get TabActivity's FrameLayout and add it my footer view.Is it possbile to define where place the footer (with an attribute like AT_BOTTOM)? So contentTab dimensions are calculated according to this footer.

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Android :: AlertDialog Within TabActivity

Oct 12, 2010

I have a TabActivity with 3 tabs. Each tab contains its own Activity. When one of the contained Activities pops up an AlertDialog, there are actually 3 dialogs created. The dialog has a Dismiss button and it must be pressed 3 times to finally dismiss the 3rd dialog.

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Android :: Returning Value From TabActivity

Oct 1, 2009

How can I return a value from TabActivity? It seems that the return value from tab pages vanishes and the caller always receives RESULT_CANCELED instead of RESULT_OK.

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Android :: Modifying The UI Within Java - Not XML

Jul 11, 2009

So I have the basics down... I can create a UI with the XML, I can show it and change the screen to another UI (another XML file) but how do I add to the UI?

Hard to explain...

Say I have a header (just 2 textviews) that will remain at the top and below that is a search box and button (main.xml). The user searches and I have it display the search UI (search.xml). This UI will have the same header (2 textviews) and below it will have several textviews each one containing a search result... Kinda like if you search for an app in the market. There's no way of telling how many results would be returned so I figured I would have to create each textview on the fly within the .java file. I'm not sure how to do this. Most likely would require a loop of some sort, but whats the syntax to create a new textview and display it right below the one above it? I'm working with linear here so I would assume just creating a new textview it will by default go to the next one down which is what I want.

Also, say I have 30 results... How do I get those to scroll but leave the 2 textview header in place? Would I create a ScrollView and put the new TextViews in that?

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Android :: TabActivity Customization / How Is Possible

Aug 18, 2009

More of a TabWidget question I guess really...

I would've tried to send a screenshot for this query if I could, but i'll try and explain.

I have 3 Tabs, each showing a separate Activity. Underneath those tabs (and above the activity display), I want to display a header. This header would probably be a Layout of some sort with a TextView inside it and a background 9patch.

Is this possible, if so how?

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Android :: TabActivity And ListActivity?

Feb 2, 2010

I am having a problem.I want to explain in detail. 1)I am Having an TabActivity with 5 tabs. I loaded content as follows.

CODE:............

And the Problem is If i want to start activity which is not specified in tabhost in above Java code,it is going out of tabactivity. ie.,It is not coming in tabactivity.

2)But i want to have all the activities under tabActivity.

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Android :: AsynQueryHandler In TabActivity

Aug 12, 2010

I create a TabActivity from Several ListActivities.

The lists are created from a cursor load in a AsyncQueryHandler. I have got no problem to load the content of the list.

After that I run an insert in the AsyncQueryHandler, and I meet the following error. The insert is done by the listActivity.

If I run my listActivity individually and that I do my insert, everything is find. Do know why ?

CODE:.......................

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Android :: Getting The TabActivity To Work?

Mar 26, 2010

I'm having some difficulties getting the TabActivity to work.

Here's the implementation of the class:

CODE:..........

The problem is that I call this class from my main activity (which is a MapActivity if it matters) and when I do the TabActivity doesn't show. It registers the click on the option menu and it even starts the intent but the screen doesn't change..it just stays on the main activity and i see in the logs that the main activity gets resumed.

I call it like this:

CODE:...............

Like I said...there are no errors (the classes called from the tabs exist of course), just no actions. I put some log commands into the onCreate function in the tabactivity (as you see) and they all get written into the log...I have no idea what I'm doing wrong here.

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Android :: TabActivity With Scroll?

Dec 7, 2009

I'm working on Android v1.5. I want to use a TabActivity with 6 or 7 or more tabs. However, I do not want to clutter my screen with so many tabs together. Hence, I'd like to be able to show, say, 3 tabs on the screen, and to be able to scroll to the other tabs. How may I achieve this? I could not find any example for this by Googling.

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Android :: TabActivity And StartAcitivtyForResult

Apr 13, 2010

Can I make TabActivity start it's childs activities for result? I need it because I can't make result code from a tab to propagate all the way up in the chain (it's reset in the TabActivity)

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Android :: TabActivity - Refreshing ?

Aug 18, 2009

I have a TabActivity based class which has 3 tabs. All are ListActivities (but that's not important for this problem)

I'm updating the TabHost's TabSpec's to change the text on the tabs. This works fine and the ListActivities display correctly.

Iater on the execution flow I need to update the Text on the tabs from "Current Text" to "Current Text (3)", for example. I update the TabSpec.setIndicator() with the new text, and attempt to call invalidate() on the TabWidget (and all it's children). But the tab text refuses to update!

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Nov 17, 2010

I have been trying to reuse the tutorial on the Android developer website about developing a TabActivity App but, unfortunately, it never worked, even when I constructed it the exact same way as it is described...
Using the debugger it seemed the problem came from the main layout.

-> setContentView(R.layout.main); //After this line the app stops.

Here is my main.xml:

CODE:.............................

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Sep 11, 2010

In an Android application I am writing, the styling for my various TextView elements is defined in an xml resource. I would like enable the user to change certain styles such as android:typeface using a PreferenceActivity. Is there a way to modify a style resource programmatically such that all associated widgets will update correctly? If not, must I manually select all widgets by id and change their styling?

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Android :: OnKeyDown Not Being Called In TabActivity

Jun 20, 2010

I am trying to override the behavior of a TabActivity that has other Activities as children. I have made all of the children activities return false in onKeyDown so that the key will propagate through to the parent.However, this is not the case.The only key that is being recognized is the search key.Back, menu, and home are not being overridden.

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Android :: Modifying Manifest On Runtime

Nov 3, 2010

I am writing an application that will run on 2.0 and above. Now, I am thinking of adding the Data backup feature to the application. Is there anyway to modify the manifest file to include the metadata only if the phone is using Froyo(2.2). Ideally, i would like to avoid creating a separate application for just Froyo.

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Android :: RotateAnimation Modifying ImageView

Oct 6, 2009

Have a question regarding RotateAnimation. If I do not set the property FillAfter to true then the image in my view, that I use RotateAnimation to animate, returns to the initial position after the animation is done. My problem is that when I set fillafter to true when I later set the image on my imageview to another image than the one I animated some kind of transformation is applied to that image also.

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Android :: Modifying The Wi-fi Advanced Setting Via API

May 31, 2009

What I want to do, is to make a software to resolve the following Android issue:

http://code.google.com/p/android/issues/detail?id=1215

2009/5/31 kankunb...@gmail.com <kankunb...@gmail.com>

- Hide quoted text -

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Android :: Modifying The User Interface

Apr 29, 2009

I am looking for some answers from some of the experts here. I have a project in mind that I want to start. It is about using HTC's Touch HD phone as a device in a museum with rich media/video about the art and the artists on it. Besides the videos and animation, I also want to show some content from a web browser. Now my biggestest issue. I do not want that the museum guest who pick up the phone for the tour get to see the standard Android user interface. Is there a way to develop a new user interface that would start up directly once the phone is turned on? It should then automatically start the app with the museum infos. Later I may want to add some GPS functions and even sms and photo taking, etc....

What do you think, how flexible is Android to allow that?

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Android :: Displaying A ListActivity In A TabActivity

Feb 10, 2010

I have issues with displaying a ListActivity in a TabActivity.

The super simple code below causes a crash.

CODE:.....................

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Android :: Problem With Extends TabActivity

Apr 30, 2009

I have problem with extends TabActivity.

My code is:

CODE:.................

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Android :: TabActivity - OnClickListener Not Working

Jun 30, 2009

I have a Tabbed View that displays a list in different tabs. When I click on the currently active tab (not the displayed view) I want to do something. Currently - the OnClickListener is NOT called. the OnTabChanged Listener however seems is working fine. Am I registering on the wrong View?

CODE:..................

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Android :: StackOverflow Exception While Using TabActivity

Jul 21, 2009

I have a TabActivity, there are 4 tabs. In each tab I have put a single Activity. One of the activities contains a Custom List View which uses a CustomAdapter which extends the BaseAdapter.

I get this excpetion, when I try to open the tab containing this activity. It seems to be thrown at a point when probably the TabActivity is being re-drawn. Can anybody please suggest some alternatives, or solutions to avoid this problem.

Here is the stack trace.

CODE:.................

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Android :: ListView Inside TabActivity?

Aug 21, 2009

I wanna put a "List" inside a TabActivity. by google and coder's guide, my work out "direction" is to create a "TabActivity" as MAIN and "ListActivity" then add it in the "TabHost" and turn out code something like (below) and fail:

CODE:.........

I know i may need to spend more time on the BOOK and google for android development, but i also feel that the resource for android is quit scattered and not detail. (i'm a developer of C# for a few years, and it's more easilier to search for information)

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Android :: Launching A Service From A TabActivity

Aug 4, 2009

I'd like to start a service from a tabactivity (I first tried in the activity launched for a tab but it seems taht there is a technical limitation).

So inside my TabActivity I defined a method named startService() which is quite simple:

> instanciate a new Intent > call the method startservice > Inside my "tabbed" activity (I mean inside a tab) I make a reference to the TabActivity and I call the method startService.

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