Android :: Return From Background - How To Manage Code

Nov 3, 2010

When I'm back from the background, onResume() method is called. Okay. So if I want to do some special code when I'm back I can put it there.

What about if I've many activities ? Do I've to duplicate that code everywhere ? Should I used the Application class and call a method in each onResume() methods ?

Plus, I would need to access the UI (changes, dialogs, ...). Maybe the application class isn't that a good idea ... ?

Concretely, I want to refresh my cache every XX time and I want to do that check when the application (or activity) is back from the background but I don't know exactly how to do and where to do that.

Android :: Return from background - how to manage code


Android :: How To Manage Background Task

Nov 9, 2010

I have a task which I need to run in the background in my Android app. It reads data over the network and populates a database. It can take several minutes to run.

Once it's started, it needs to complete successfully without interruption. (Otherwise I'll end up with a broken half-populated database.) I realise I can never guarantee it will always complete, but I want to make it as hard as possible for the system to kill off this task. For safety I guess I will have it populate a temporary database, and then only swap out the old database for the new one on successful completion of the import.

It's a modal operation; it does not make sense for the user to be interacting with the app while the import is in progress.

My first attempt is using an ASyncTask with a Progress dialog to achieve the modality, but this obviously breaks the "don't interrupt" requirement. I could work around the screen-rotation issue with ASyncTasks, but I don't think that goes far enough.

At the moment I'm not sure if this should be an ASyncTask, a Service, an IntentService, some combination of these, or something else entirely.

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Android :: Adb Install Failure With Return Code -12

May 13, 2009

I just installed android sdk1.5 on a ubuntu 8.04 machine. The IDE is eclipse3.4 with ADT. I created a HelloAndroid project with only the automatically generated code. It compiled successfully and worked on the emulator. But when I tried to install the apk to my G1. It failed with only return code [-12]. I tried anroid 1.1 and android 1.5. The results are the same. But my G1 works fine when the sdk is 1.1. Any idea?

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Android :: Picasa Intent Return Code / Why Is So?

Sep 24, 2009

I use the standard Picasa upload activity in my application to send images to the user Picasa account, but everytime the Picasa activity returns in my onActivityResult function the return code is RESULT_CANCELED, no matter if I cancel the upload, press the back button or correctly upload the image, always RESULT_CANCELED, can someone confirm this? I need to check if the user correctly started to upload the image. code...

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General :: Return Statusbar Background Nontransparent

Oct 25, 2012

I want to return my statusbar background untransparent .. how can i?

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Android :: Can Background Activities Execute Code?

Jul 15, 2010

Are Activities in the background considered "running" (and can execute code) or are they in a suspended state?

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Android : Set Wallpaper As Background / Do It Through XML - Java Code?

Jun 2, 2010

I want to set current wallpaper as my application background . Any ideas to do it through XML or Java code ?

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HTC EVO 4G :: 30 Day Return Policy - Out Of Stock At Return?

Jun 27, 2010

If I need to return my phone before the 30 days are up and they are out of stock, will they still honor the return policy and just call you when they have one available or will you have to stick with the phone that you have?

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Android :: How To Add A Background Theme / Background Wallpaper To My App?

Nov 18, 2010

How to add a background theme and/or background wallpaper to my app? Right now my app background is plane.

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Android :: Change Existing Apps Code Of G1 - Calendar And Camera Code

Feb 19, 2009

I wanna to add some code in Camera Apps code , so that it will invoke my Application and do the thing as per my desier. Is it possible to change the Application code? If any one already tried this then plz let me know, how to proceed and build if i change some code. How to integrate my application with camera apps.

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Android :: Put Algorithm Code To Create Binary Library / Link This In Main Function Code?

Jan 27, 2010

I can build a daemon with my algorithm code and main function.I put all files in one folder under /development and make This executable file works successfully

Now I want to separate my algorithm code and main function code. I hope to build a binary library with my algorithm code and main function will link this binary library to use.

Where to put my algorithm code to create binary library and how to link this binary library in main function code?

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Android :: How To Manage Objects ?

Sep 8, 2010

I am new to Android development. I want to know how you all manage objects. For eg we make object as A a = new A(); and then manage that object. But, here, we call A.class; My concern is that i don't want to call on Create(),nor do i want to push UI screen I just want to make 1 static object for 1 screen;and want to manage it throughout my application. that is, instead of calling A.class; can i call A a = new A(),and manage that object without pushing,and whenever i need i push that screen. Is there someway?

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Android :: How To Manage Activities?

Jul 24, 2010

i identified problem in changing one activity using tab, in on tab activity i am adding data to sqlite in other tab activity i am displaying them using listview(array adapter)but when i come back to add data and after adding new item to sqlite the newly added records are not updated in listview.

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Android :: Cannot Manage To Get ADB Working

May 25, 2010

I want to start developing for android and for some reason whatever I do I can not make ADB show up my Nexus One. Both on and off in development mode. Both SD Mount and without SD Mount Both With USB tethering on and off for all "ADB devices"(windows XP64bit) show no device (service started successfully, device recognized in Device Manager correctly).

Tried reinstalling drivers, tried uninstalling drivers completely(using 3rd party software) and reinstalling, tried different versions of USB driver (up to the one before the last - that came with the 2.1 SDK). It seems online that this issue reoccurs on different devices, but all of them seemed to solve with one of the above solutions, Which none worked for me. It does not look like a hardware problem, because everything else that is USB'ed works correctly.

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Android :: Best Way To Manage Contacts

Feb 13, 2010

What is the best way to manage contacts, can u download your contacts?

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Android :: Integrating Code With Home Screen Code

Jan 22, 2010

I am trying to integrate my code to the android Home Screen code. I want to launch my activity frm the HomeScreen by click of a button. I Did the code & then build it but when i click the button i m getting error as Application not installed on phone.

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Android :: Manage 2 Versions Of The Same Application?

Sep 3, 2009

I want to use the same eclipse project to maintain only one source code (or two projects that refer to a generic project). My problem is that the names of the package have to be different on the market (eg: my.android.app.lite and my.android.app.pro). If the package names are differents, the generated java ressource files are differents (eg: my.android.app.lite.R.java and my.android.app.pro.R.java). So, the source files must point to differents R files according to the version (pro or lite) and I have to change all the import...

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Android :: How To Manage Connection To A Socket?

Jun 21, 2010

I would like to know what is the recommendation for socket connection management in Android?In our App we would like to be connected to a TCP/IP server when our app is in the foreground or paused. So, create a connection to a TCP/ IP server when the App starts basically, On Create of the launcher activity. However, we do not want to create a new connection and close connection every time an activity is created, paused, destroyed or orientation changed. So, we save the connection object in the App class and the activities will reuse the same connection.Question is when do I close it? I would like to close the socket when the App is "paused", "stopped" or "destroyed". The problem is these messages are not sent in the App context. How can I figure out if the App is in foreground or not? Even the "Terminated" event for an App is not guaranteed to be delivered. So, in that case how do I know when to disconnect?

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Android :: How To Manage Event By 2 Widgets?

Jul 10, 2010

I want to change how a gallery looks like. I want to add 2 jogs at each side, so looks like this:
http://omploader.org/vNHc2Yw/device.png

First approach was to add the "jogs" to the ImageAdapter (at the beginning and at the end) for the Gallery. The Gallery will show the items as usual, but It will apply the custom background and also if you specify spacing, you will get an ugly gallery. Also, I want the jog not to be centered as the others images. Then, I decided to download the whole api and modify the Gallery source in a way so to handle specially the first item and the last item of the adapter. But, I don't know how to compile the api alone. The Makefile in the root project will build 6gb of the whole android platform. If someone can explain me how to build just the API, I will be grateful.

The other approach was to compose Views. I thought to add ImageView's to the left and right corner and to be scrolled when needed, but when the Gallery capture the events I can't forward it to the holder of the ImageViews. So, I extend Gallery, and I override onScroll() like this:
super.onScroll(e1,e2,distanceX,distanceY); return false;
and also onTouchEvent() like this:
super.onTouchEvent(event); return false;
But unfortunately when I return false wihtin onTouchEvent() the Gallery does not scroll.

So, main questions are:
1) How can I compile the modified API to generete a MyGallery.class to be added to android.jar? If I modify the source code of Gallery.java I can manage the fill of the Gallery for the specific items I want (I already read the source code).
2) In other approach, Is it possible to handle one event by 2 widgets? If so, I could overlap the Gallery above a jog. The Gallery will scroll as he knows, and I will scroll as I want.
3) If those approachs are bad, what will you recommend ?

I don't get why the Gallery does not have this nice feature I want to implement, kind of: setBorders(left, right) and etc. The problem on extending Gallery, is that when you add a View (for instance, the "jog"), you specify a position. Gallery fills the gallery getting the Views of it container with: getChildAt(0) and getChildAt(numChildren -1) when filling to right and left, respectively. Then, it gathers the 'unseen' Views from the Adapter. So the added view (the 'jog') will be scrolled by Gallery, but when the view is no longer visible, the Gallery itself has no way to get back that view, as it's not in the Adapter.

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HTC Desire :: How Well Does Android Manage Its Memory?

Jul 7, 2010

I always hear that I don't need to use Task Killers as Android manages its own memory. However, I find that sometimes when I play emulators, killing tasks provides far better framerates.

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Android :: Manage The Callback Of The Applications?

Apr 2, 2010

in android application development, i frequently go through the word "CALLBACK" in many places. i want to know want it means to tell us technically. and how i can manage the callback of the applications.

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Android :: Ways To Manage Project?

Nov 5, 2010

I'm releasing my first app soon, and this is the first time I'm doing any of this on my own. Looking into the future of it, there are features I plan to implement within the coming months. But looking at me adding features, I realize I would be altering the original source, so if someone finds a bug, I need to either wait, or completely undo everything to fix it. What are some options for managing my source code and stuff?

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Android : How Can I Manage Cache Of MapView?

Feb 1, 2010

I've made an application based on the Google Maps API. The problem is that my application is made to be used in the wild, in places where there is no network. So I would like to manage the cache in order to ensure that specific tiles are saved and available during the trip (I'd like to redirect them in database but any method may do). For now, I didn't found any other method (not tested) than try to recode the MapView class. I'm focusing on Google API in order to have satellite photography (for places where there are no roads). What could I do ?

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General :: App To Manage Music On Android?

Sep 6, 2013

Coming from iphone/itunes and want to know what is a good music managing app that I can use?

I really like the feature in itunes where it keeps your media organized in folders. I also like how you can delete the song in itunes, sync your phone and the song will be gone.

I really need these features in the music app I select.

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Android :: Application To Manage Special Events?

Nov 16, 2010

I'm a college student, and there's daily specials at bars, salsa dance nights, special meetings, lectures, etc. And all these things happen around me. I don't want to just put them into my calendar and have them flooding it, but I would like some app to hold such things. Anyone know what I can use that isn't my default so I can retain my personal schedule and, if I want to do extra, can see this app's contents?

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Android :: Manage Contact - System Group

May 9, 2010

I have an android 2.1 (Samsung I5700 Spica). Does android use only "google contact" for manage all contacts? Even when I manually add contact on the top it says "Google contact from MyEmailId@gmail.com". The reason for asking is if you select "Menu">"Display Options">select "MyEmailId@gmail.com" you can select "System Group" How do I add certain contact to one of these groups, by default if I manually create a contact it goes and sits in "System Group: My Contacts". Is there an option where one can add contact not get stored under google contact?

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Android :: Application To Manage Call Usage?

Aug 12, 2010

Is there an app (or even a setting on the Desire itself) that can keep a track of the outgoing calls duration and total on my phone? I've recently dropped from 600 to 300 minutes and want to make sure I don't go over my allocation in the same way the "3G" app tracks my Internet usage!

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Android :: How To Create And Manage Custom Themes?

Mar 19, 2010

I know how to create and apply styles and themes thanks to http://developer.android.com/guide/topics/ui/themes.html. However, this method only works for our own activity or application. I'd like to create themes that could dress the whole system (i.e. all activities). Of course, I'd like to select one of these theme by programing. If I could customize the status bar as well, it would be perfect. I didn't find out documentation about that.

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Android :: App To Manage Credit Card Spending

Sep 26, 2010

So I just got a credit card and need to monitor my spending on it, is there an app where I can do this?

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Android :: Application Widget - How To Manage Updates?

Nov 8, 2009

In the process of creating an AppWidget which displays data from a remote host, I am looking for documentation about how to manage updates. Are there articles somewhere about how and when querrying remote data is the most appropriate? I am wondering if we have to explicitly code the remote queries in a separate thread, or even do it in a separate service, to avoid freezes of the home screen (this happens a lot on my htc magic).

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