Android :: Publish An Application Update On Android - Market Without Deleting Local Database And Local Files
Nov 11, 2010
I published an application that stores data in a local database.
Now I have to publish an update to this application to fix some little bugs, but I am afraid that downloading and installing the update will delate the local database associated with the previous version.
I would like to know how the update system works. Will installing an update completely delete all the apk, files, databases associeted with the previous version?
If so, how can I avoid this in my code?
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Nov 1, 2010
Due to my little knowledge in Java programming, I've wondered if I'm able to display local html files in my application? (And when yes could you please give me a reference.)
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May 30, 2012
Using Local XML file as a database for a android app?
I am trying to build a app with flash using a xml file as database, to read the xml from a external file from the local directory isn't a problem, the problem is how to write data from flash to the xml file.
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Oct 20, 2009
I am working on a project for a belgium Tv Guide. Now I download a database (.db) file from a server to the sdcard to work with. In this database are 2 tabels, tvchannels and tvprograms. Now I can do several updates to the tvchannels table and i want to make a backup of this table to a lokal database file. How can i do that? I want to do this because I have to download a new database file every daye from the server and the channels that are choses are saved in the tvchannels database. I want to backup this database table and when the new database file (tvgids.db) is downloaded I want to replace the tvchannels database (from downloaded database file) with the backup from tvchannels..
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Jun 11, 2010
I am trying to overlay route data in KML files on a MapView.
The following code works great:
CODE:................
The only problem I have with this is that I don't need to re download these KML files every time. I have about 10-15 KML files that will rarely change. Also since it has to connect, download, and parse these each time there is a delay in opening the maps.
It would make a lot more since for me to save these as a local resource and have the URI reference it there. Is there a way to construct a URI using the geo: scheme and have it point towards a local resource?
It looks like file:///sdcard support was included in 2.1. The only reference I could find to it was at the end of this bug report thread. I am currently at work and don't have time to play with this yet but I would like to figure it out later. I feel like there are a lot of people on stackoverflow and elsewhere who would really appreciate a reasonable way to do this.
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Aug 11, 2010
How can I copy my data from xyz.xml in my assets dir to my sqllite db during development in android platform
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Sep 2, 2009
From the Android documentation:
"You can store files directly on the mobile device or on a removable storage medium. By default, other applications cannot access these files. "
I could write to the sdcard (/sdcard/file.tmp) and other apps could access these files, right?
I would like some local storage that I can write files to (and read from later) that are not accessible to other applications, and I will always have access to. The problem with the sdcard is that if someone plugs in a USB cable and turns on MSC, my application (and all applications on the phone) will lose (both read and write) access to the /sdcard directory. So I need something more reliable.
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Feb 8, 2010
The problem that happens is tuat google thinks I am Spanish and therefor makes google.com display in Spanish. I tried changing and deleting the cache in the browser, tried changing the local settings, nothing wants to work? Right now I have set my homepage to the English version using the url codes, but that is only a temp fix.
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Jul 20, 2010
I have an android app that stores data to the local storage. This is done just like in the tutorial on Google's site:
CODE:......................
However, whenever the device is powered off, then powered back on, these files are removed. How can I get them to stay?
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Jun 11, 2010
I dont want just news. i want to look at the TV channel (video) any program to access local TV ?
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Oct 19, 2010
How do i load a local image from android assets from a generated (php) server-side html file?
eg.
>
img src="file:///android_asset/calendar-date-icon.png">
-or-
background:#ffffff url(file:///android_asset/calendar-date-icon.png)no-repeat;
cannot get either to work
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Jul 7, 2010
I am new to Android development. I developed a new Android application. I would like to publish my Android application to the Android market. How can I do this?
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Feb 18, 2009
I'm thinking of using WebView as a container for "Form" based JavaScript+DHTML applications. This is simple fill-out-forms like you have on the web, but now on mobile like for note taking, order taking, and the like.This is to allow web developers to build the bulk of the application - Javascript will perform validation, computations, etc.On the Java side, I only need to implement database CRUD operations, and a ListView to scroll over the forms.To minimize the learning curve on the JavaScript side, I've been thinking on how to emulate AJAX calls so that the web developers don't need to learn new methods to call on the JavaScript-Java bridge. Of course this isn't possible using XMLHttpRequest, so I'm thinking of adapting JQuery or other Javascript libraries for this purpose.
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May 3, 2013
Check out Mono. It takes a different approach by giving you access to all artists and their releases and then matching up content from either your local files, your files uploaded to Google Music or YouTube.
[URL]
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Sep 1, 2010
I have an app with locally stored .jpg files. I would like to be able to send the images (1 at a time, on user interaction) to the Gallery app's activity using an explicit intent.
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Sep 16, 2010
I'm testing an application I'm working on and I wanted to delete the database my application creates so I could read all the data from my web server back in to a fresh one.
I launched adb, went to data/data/my.applicaton.package/databases and did a "rm mydatabase". This deleted the database (note: I've done this many many times before without a problem).
I launched my application again and, to my surprise, a new database wasn't created. Even more surprising is there was data in my application. My application is still pulling the data from some where! It gets a Cursor from my database and uses a CursorAdapter to populate the list. So, it is obviously reading from a database (seemingly a cached one?).
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Nov 9, 2010
I am having a own device which is running on android 2.1.I have installed one application in that .That application will create a new DB if there is no DB for the application.It is creating correctly .I have accessed the device memory as well.I have seen the database in the device memory.But when I reboot the device the Database got erased .The app is not persisting the database after rebooting the device.What will the problem?
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Oct 14, 2010
We are migrating to a new Android developer account and I was wondering if anyone had any suggestions about the best way to transition apps to the new account.
From what I can find, the only suggestions I've seen were to publish an update to the old app notifying the user of the new updated app. This requires us to publish the apps under a new package name which we would like to avoid if possible.
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Sep 29, 2010
Folks, I am wondering if anyone here can recommend a way of listening to a couple of local/regional radio stations on my HTC Desire, running Froyo on o2 in the UK The stations are Northsound 1 in the Aberdeen area, and BBC Radio Scotland FM. I have tried A Online Radio and Myplayer, neither will recognise the stations even when entering the url I would use in the pc's browser to listen online at home. Only reason I want to stream these is the non-existent reception using the native FM radio app in the phone.
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Jul 16, 2010
I don't see the point of using a local service in Android. If I want to do backgound stuff, I can create a thread and use Handlers.
Creating a local service is a big headache, you have to mess with Binders, worry about the start/stop/bind/unbind lifecycle, etc.
What does a local service get me that a thread doesn't ?
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Oct 6, 2010
I have an application which requires networking service. I took on LWUIT4IO and adjusted it to my needs so now i have a network queue that can run one or more network threads.Now, my application is based on single root activity that spawns other child activities as needed (it's a reservation center for vacations, car rental etc.. each in it's own activity). The network is common to all and should be used by all activities. the network thread requires, basically, a callback to notify it's finished and return the result (input stream or byte array) .At first i thought that i should use a service instead of a singleton that will be started in the root activity(the service will also be started in the root activity), however working with a local service is problematic for me: 1. no callbacks which makes me use intents to encapsulate the request esponse in intents time consuming, also since there is not single point of listening (i have to use BroadcastReceivers)i have to add a calling class name or some other identifier so the sender of the request will know it's for him, i think this is also a waste of time and resources since i need only one listener.
i think i CAN use callbacks if i use Binder object to return local instance of my Service and then use the queuing method directly, this is problematic for me as acquiring Binder object is asynchronous and i need it 'on the spot' 3. I thought of using a static instance of the service and null it in onDestroy of the service, but if i use that way, i'm not so sure i need a service... 4. i saw a small answer in stackoverflow about inheriting application and putting whatever member you need there so when you use getApplication you get this instance and then you can retrieve whatever you want, is this even advisable ?
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Aug 5, 2010
Can anybody tell how to run the local webapplication using android webview. I want to run my own webpages in android using web view.
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Nov 16, 2010
I'm developping an android application. This application use a web service to get some informations. The web service is deployed on local in my computer. When i run my app with the android emulator, everything is ok.The emulator use the address 10.0.2.2 to use the local web service.Now i would like to know if it's possible to connect my mobile phone to my computer and to have access to my local web service.In others words, use my own mobile phone instead of the emulator.
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Jun 19, 2010
I have some web pages that I want to bundle with my Android application and display as static pages. Where do I put them? How do I access them? I'm working in Eclipse, so I want a solution that automatically bundles them.I've tried putting my web pages in res/raw, and I can read them as an input stream from there, so I could push that into a WebView. But I'd really prefer if I could stick them somewhere and access them with a URL. I've tried file:///android_asset/about.html but that didn't work. Surely there's a way to form a URL to display bundled pages.
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Dec 15, 2009
i am looking for a good live straming tv app. anyone know of one, pref with local channels (i am in NY)
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Oct 5, 2009
I am very new beginner, and I am designing a small application as below.
- After a user starts the application, he/she can click the start button to start a background task. (e.g. retrieving the news headlines periodically, then do something...)
- Even after the user quits the application, the background task still running.
- To stop the background task, the user needs to run the application again, and clicks the stop button to stop the background task.
In the above scenario, what API should I use ? (Local Service Binding ? Remote Service Binding ? Handler ?)
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Apr 17, 2009
I have ListView whose CursorAdapter is bound to my local database table. Is there a good way to make it so that when new entries / new data is inserted into my table, my ListView automatically refreshes?
This is easily done on ContentProviders via ContentObservers. How do I do the same when iterating over local databases?
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Jun 11, 2010
I'm starting a service in my application using startService.
I do not want to use bindService as I want to handle the service life time myself.
How can I get an instance to the service started if I do not use bindService? I want to be able to get a handler I've created in the service class to post messages from the activity.
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Apr 1, 2010
This thread is to discuss the pros and cons of each travel app and recommend your favorite one(s). Please mention ones that aren't listed above in the poll too!
I'm not sure if "local" is the correct term to use but I'm just talking about apps like, Yelp!, WHERE, Google Places Directory, etc. I've downloaded most of them but, as with most things, there's a few things I like about each and none of them are "perfect" in my view. So I was just curious what everyone's opinion was when it came to all these apps and which one they like the best and why.
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Jul 1, 2009
I'm trying to read some local files, and ive been reading a lot of stuff about it, but i still don't know where to store the files on my phone and how to get the right path. Some say, it should be stored on /data/data/your.package.here/files but where is that, i mean i can get there when using the emulator but i have no clue how to put files in this on a real device.
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