I would like to check whether there is any direct API available to check whether a particular Database exists or not ?
Currently, to initialize data for the first time (not repeatedly), we try of open the db and if it fails we know the database does not exists otherwise it is already created and initialized.
Is there any simple API available to check whether DB exists or not ?
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I couldn't find Calendar application in the emulator, is there any plug-in to have all the applications enabled in emulator?
If Calendar app exists, what is the service API for Calendar application supported by android.
I have created a database for my android app which contains static data and does not require update/delete functionality thus when the app starts, I want to check if the db exists and if not then execute my dbAdapter class. I know its a simple if statement but I was just wondering the most efficient way to query whether the db exists.
View 2 Replies View RelatedI'm trying to open a file in android like this:
CODE:..........
But in case the file does not exists a file not found exception is thrown . I'd like to know how could I test if the file exists before attempting to open it.
How can I test if there's a ContentProvider for a Uri ?
I'm currently doing a query on it and checking for a null cursor, but that generates an error in the system log each time, which I don't like to do.
I used AlarmManager to set the pending intent.
I need to find out the state of the pending intent, in other word, is this pending intent working or not. Boz i may need to cancel this pending intent, but before canceling it i want to make sure it's active.
But i see no function in AlarmManager can read this status.
I am struggling to find a way to determine if a valid network is available to an app. specifically, if there's a problem making a network connection, i would like to be determine if it's on the client (app) side, or a problem with the remote server. i happen to be attempting a URL connection (using http client) and the wide and varied possible exceptions don't seem like a reliable method. for example, when the network is down on the phone, i received "unknown host exception", which doesn't really indicate the root cause ... it's possible to get that exception with a valid network connection also. at other times i get other exceptions, such as socket exception. is there a way to ask the phone if it's network ready? the other option i thought was to ping a known good server to see if it responds ... with an IP address. kind of a heavy weight option and not foolproof.
View 2 Replies View RelatedNeed some information on Gestures. How does android treat Operations like Fling which are at device level? Are they treated as Gestures? I am not able to see any gesture listner code in Launcher (Home screen ) application. If i want to change ( add/remove/modify ) the behaviour of Fling operations where i should start looking in the android code base?
View 2 Replies View RelatedI am a big fan of Head First Series. so is there any Head First Android Book exists?
View 4 Replies View RelatedI am looking to the fastest and the correct way to check if a record exists in the database:
CODE:...................
I have already created this project, but I wanted to start over. deleted the HelloAndroid folder from my workspace folder restarted Eclipse now I can't create a project with the same name, because Finish is greyed out, and it gives me the following message: A project with that name already exists in the workspace eclipse
How can I completely delete my old HellowAndroid project from Eclipse?
Is there a way to check and see if an Activity exists on your device? If I have a youtube video link I want to specify it open in the YouTube PlayerActivity. However, I don't want to crash if for some reason they don't have it.
Is there a way to check and see if the activity exists? I don't think I can catch the runtime exception since startActivity() doesn't throw it.
I have a Tabview with 3 tabs (each having their own activity). I have a tab that parses a RSS feed. How can I refresh this feed via a menu button? I tried doing the following but I lose the tabs above of course.
CODE:.................
I have a database of notes and lists, with three association tables.
Basically, lists are parents of notes and other lists, and notes can be parents of other notes in a outline like hierarchy.
I am using this query to return all notes within a list as well as the number of subnotes each note has.
CODE:...................
This query works just fine, but it's overkill. I don't need to return count(n2.note_id) as Num_Subnotes because I'm only using that value to check if the note has ANY SUBNOTES AT ALL. Essentially it's a boolean value where 0 is false and > 0 is true.
It seems to me that counting all those records is a waste of time when I could just return 1 after finding the first matching value.
Is there a more efficient way to check if count(n2.note_id)>0 in the above query?
I am using a ContentProvider for caching results from a web-service query. It is an HTTP request and the response content is XML. Most of the data is cached, so I simply query the DB, if not found, request from webservice, insert in DB and requery the DB. Thus the response is always a Cursor from SQLiteDatabaseHelper.
I have one result set that is not stored in the DB and since it is 100% transient, but I would like to provide the appearance of it coming from the DB's Cursor. Is there an easy way to do this? For example, if I could project it onto the cursor with a cursor.setValue("string", objectValue) or some other existing implementation.
If not, I will either bypass the DB for this content result, or stuff it into a trivial table that is constantly reused.
I want an widget that one can sign on it on the touch screen its ambivalent to painter so is there a way using the painter in my application?
i want it too fit the 2.1 version does it exist ?
There is a game called blowfish for iPhone that is pretty cool for passing the time by. Any idea if something similar exists for Android?
View 1 Replies View RelatedIs there a way to unzip and see what files exists in classes.dex file. Are there winzip like utilities for .dex viewers.
View 2 Replies View RelatedIs there a way to observe a bluetooth pairing and then be aware of when the connection no longer exists? Basically I want to observe when my phone connects to another device and what that connection is dropped to that I may execute an action based on that connection.
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Saving the file code...
The last line gives a null pointer exception, why is BitmapFactory.decodeFile returning null? I can verify that the file is getting saved correctly as I can pull it using adb and see the png displaying properly.
I am working on a simple app for the HTC EVO that blinks the alternate notification LED when a new text message is received. I have this part working great via a Broadcast Receiver but I need some way to turn the LED off when the user has read the message(s) using their default SMS app. I'm not sure if it is best to do this in the receiver or in a background service.
View 2 Replies View RelatedDoes this exist for the hero? I read it works for other htc phones and blackberry but do we have something similar?
View 10 Replies View RelatedAnyone know how to check the user's country? I'm looking for a way that's faster than using GPS and reverse geocoding. (I need the country where the phone is registered, not their current location, in any case.) Is there any constant in the settings?
View 4 Replies View RelatedIs there a way to programmatically without root check and see how a program was installed?
The only solution I've been able to find is using root - and tapping into a database that the Vending application uses;
CREATE TABLE assets10(_id INTEGER PRIMARY KEY AUTOINCREMENT, content_uri TEXT, s tate TEXT, download_pending_time INTEGER, download_start_time INTEGER, install_t ime INTEGER, uninstall_time INTEGER, size INTEGER, type TEXT, package_name TEXT, is_forward_locked TEXT, signature TEXT, refund_timeout INTEGER, version_code IN TEGER, server_string_id TEXT UNIQUE);
Most specifically I can check to this database using my package name and/or signature and see if it's ever been installed by the market. Then if it has you could check to see if it's been uninstalled.
As for background, I'm just messing around with ways to distinguish real users from pirated versions. I've noticed from an application I've posted that I only have approximately 100 downloads and 50% active, yet my server which is used by the application shows approximately 200ish unique users within the past few days.
I have a string called extStorageDirectory which is set to my SD Card and then "/mypics", I can then save a picture in to this directory, but only if the directory exsists. So how do I check to see if the directory exsits, and if it doesn't creates the directory?
View 3 Replies View RelatedI am doing an experimental project and want to send key events from one application to another. I know android doesn't allow applications to interfere each other in this way due to security concern. Is there any way i could bypass the security check? I've looked into the WindowManagerService class and made some modifications but it seems not working for me.
View 3 Replies View RelatedI have some shares n the company I work for and want a good app to check price and see what my shares are worth.
View 3 Replies View RelatedI have an IntentService which makes some web service calls. Before making these calls I check to make sure the device has network connectivity.
I am doing so like this:
CODE:.............
Unfortunately, when I'm debugging on my Android device, this returns false when I have both a network and a wireless connection.
Some interesting tidbits about connec.getNetworkInfo(0):
CODE:...................
Clearly this code is not sufficient (perhaps it would only return true if I sent some bit over the network and turned the radio on?). Moreover, since I'm not well versed in the ConnectivityManager, I'm assuming I should probably be scanning all networks (ie: getNetworkInfo(0 through N)).
How can I check if headphones are currently plugged in. I don't want a broadcastreceiver which informs me when they have been connected to the device. I need something like:
if(/*headphone is connected*/)...
Can some body suggest me how do I check if Android is in home screen? My requirement is I need to invoke an STK application, when I get the corresponding command from SIM and Android should be in home screen. How do I check if Android is in home screen?
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