I want to be able to query a ContentProvider from a Service, so my understanding is I will need to use a ContentResolver. What I can't seem to find is how do I get a Context that I can use to create the ContentResolver with?
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for some reason i would be executing a raw query or at least a query with group by clause and having clause to the table calls from database contacts.db.Adding the group by clause and the having clause to the where clause will result in exception.Open the database(/data/ data/ com.android.providers.contacts/databases/contacts.db) with SQLiteDatabase. open Database()also throws an exeception.
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Why the contactsCursor is null? The number is in the contacts. Is there any mistakks in the query?
I'm trying this code and it's getting stopped in the getContentResolver statement....
CODE:.........
The goal: refresh database from XML data
The process:
Start transaction
Delete all existing rows from the tables
Per each main element of parsed XML insert row into main table and get PK
Per each child of the main element insert record into 2nd table providing FK from the previous step
Commit transaction
Pretty standard stuff as far as db operations. The problem is that CRUD operations are not done within ContentProvider but rather using ContentResolver so the insert for example looks like resolver.insert(CONTENT_URI, contentValues). The ContentResolver API doesn't seem to have anything pertained to transaction and I cannot use bulkInsert since I'm inserting in 2 tables intermittently (plus I want to have delete inside the transaction as well).
I was thinking of registering my customized ContentProvider as listener by using registerContentObserver but since ContentResolver#acquireProvider methods are hidden how do I obtain the right reference?
What would be a sensible way to add DISTINCT and/or GROUPBY to ContentResolver- based queries. Right now I have to create custom URI for each special case. Is there a better way?
(I still program for 1.5 as lowest common denominator)
I am wondering if Android's ContentResolver supports using SQL functions over the columns when you query a ContentProvider. Such as SQLite3 date functions, to get a specific date format, or datediff?
View 1 Replies View RelatedYou can delete with content resolver by URI or by passing some parameters to the where parameter.
How do you make the parameters to be SQL Injection Safe?
Is it possible to use Prepared Statements with ContentResolver?
act.getContentResolver().delete(myuriwithid,null,null);
act.getContentResolver().delete(mybaseuri," name = '"+this.name"'",null);
I know that after downloading an mp3 from your app you need to add it to the ContentResolver to see it on the music player. I am doing it with the following code...
My issue is that I am willing to avoid setting DISPLAY_NAME, ARTIST, ALBUM, TITLE by hand.
Is there a way to tell Android to do it from the file? I've already used just values.put(Media.DATA, pathToFile); but it's not adding it to the player.
Is there a way to force the thread that scans the sd for music?
When i access the phone book,i change the peoleo of the book,or delete the peoploe of the book, or update the people of the book, very qukliy ,the phone tell me GREF has increased to 201,and it increased when i next acess the phone book. i have use the ContentResolver,not the activity query.
View 2 Replies View RelatedHow to add contacts in Android 2.2. Please help as I am not able to make it. I am adding contacts but it is not visible.
View 2 Replies View RelatedI get records from the system by quering a ContentResolver. I maintain the order of the items in the database. So I want to display the items in the order taken from my database.
How do I merge these two informations?
I am looking after an alternative way now. As what I ideally want is:
Get order of contacts by a custom order held in my database (this involves joining CR with my DB cursor, and doing an order by, later seams it's not possible with CursorJoiner) but there is more, if the join is not unique I want to sort by contact's name as last measure
Which is impossible using Cursor and Joiners, because of the missing feature of order bys, also I need to return a Cursor, as I will be using the in an ExpandableList
Also this translated to TSQL it would look like
select * from contactsdata
left join category on contactsdata.catid=category.id
order by category.pos asc, contact.display_name asc
So I am looking now after an alternative. I have in mind to load in a temporary DB table all data from CR, then do the query on the temporary table where I can join tables and do order bys? How does this sound to you?
I have a service running in the background.I have a background thread that gets a reference to the service from the application's main activity. But when the background thread calls a method in the service to display a toast, I get the "Looper not initialized exception".Why,if I have a valid, bound reference to a Service, does this still happen?
View 4 Replies View RelatedI am getting following message when i try to launch service.Also is there any specific path on file system where we need to place the .apk file which contains my serivce component only.
View 2 Replies View RelatedI am trying to run the sample soft keyboard included in the SDK. I am using the debugger, and the literature says that to use a breakpoint while debugging a SERVICE, I need to include:
android.os.Debug.waitForDebugger();
So here is the portion of the code I modified:
CODE:...........
I have put a couple of breakpoints, at the statements indicated by the comments.
This is what happens: the debugger first stops at the breakpoint1, for a few seconds. But then the service restarts. For the life of me I can't figure out what makes the service to restart.
My service works exactly the way i want as long as i use start and stop and communicate using intents. However my activity needs to change the state of my service as well as retrieving state information.So i thought it would be nice to broadcast some kind of state_changed event from my service and use a binder interface to pull information from the service or change the services state based on user input.This works fine too. The only problem is that my service gets killed when i unbind it just as the documentation says.Is there any way to keep the service alive but still get an interface to control it directly. My activity offers the user a way to stop the service and the service kills itself anyway after it's work is done but i don't want the service to stop every time the activity is destroyed.
View 3 Replies View RelatedI'm confused about whether I need to run my service in a separate process. What are the advantages / disadvantages of each?For reference I'm trying to create an App that uses a service to play [streaming] audio in the background. So which one is better for my use case?
View 1 Replies View Relatedwhat I'm trying to do here is implement something like a peer-to-peer client. Being that, it will start a client thread and a server thread.I know Services themselves run in the main GUI thread, so I'll have to start a couple of independent threads (or Asynctasks?) for each server and client. The only thing I'm not so sure about is if I'll better have 1 Service starting 2 threads, or maybe 2 services, each one of them starting their own thread.
View 2 Replies View RelatedI got an problem on getting the TelephonyManager in my personal service. The code as below: public class MyService extends Service {@Override public IBinder onBind(Intent intent) { return mBinder;}
View 4 Replies View Relatedi have an app that binds to a local service.I want to add a desktop widget that binds to the same service. does my service have to be a remote service or can it still be local?if it can still be local, how can I get at the local binder?
View 2 Replies View RelatedPlease show me how to bind to a Service from another Service on Android.
If you have an image to show how to do.
I am developing an Android app which needs to poll a specific webpage in time intervals. I've got it to the point where it does indeed poll the page on a specific interval, and that interval is specified in a SharedPreference which can be changed by the user in the settings page of the app. But complications arise when network connectivity is flaky.For example, how do I ensure that the Service "wakes up" the network adapter and gives it ample time to connect before polling the page, in the case that the phone was sleeping to save power? This polling action can happen as little as once every 24 hours, so I don't want to miss one action just because the network was out (but turned on a few seconds, minutes, or even hours later).
Or there are times when the web service doesn't respond, or DNS doesn't respond, or what have you, and for any reason it doesn't get a response even though the phone is technically connected. What sort of rule do I put in place to make this retry later, so that I'm not retrying repeatedly when the user specifically turned off their internet but I'm retrying soon enough that if it was just a hiccup, the data can be received soon after the first try?Are there any examples for this type of situation? What is the logic to best handle this?
I'm developing a GPS tracking software on android. I need IPC to control the service from different activities. So I decide to develop a remote service with AIDL.This wasn't a big problem but now it's always running into the methods of the interface and not into those of my service class. Maybe someone could help me?If i now try to call a method from an activity for example start(trackId) nothing happens. The binding is OK. When debugging it always runs into the startTracking() in the generated ITrackingServiceRemote.java file and not into my TrackingService class. Where is the problem? I can't find anything wrong.
View 1 Replies View Relatedi have a question about Services in Android.I have a application with two Services A and B.Is it possible that Service A can stop Service B?I dont want to do it through a Activity, cause the Application will be in Background. If some special Event happen in Service A, then it should tell Service B to stop. How can i do that?
View 1 Replies View RelatedI have a galaxy s2 and after I installed costom roms I dont have any signal what so ever.
I tried with like 3 roms and the same result.
I tought it was a modem problem and I tried to install some modems and see if that works. But it didnt.
My Service State says Out of service and sometimes it says Radio off.
I hosted my service WCF (.net) using a windows service,i can access to the service from any browser but when i tried to call it from android it doesn't respond. it works fine before the hosting procedure (i used host client by default on Visual Studio).The url that i try to attempt is from android emulator, and installed my webservice in the same local machine(endpoints address http://localhost.).
View 7 Replies View RelatedI am creating a application whose only component is a service which keeps on running in background (basically a proxy server) but I am not able to find a way how to start that service. Application can not have any UI or user interaction so I am not using Activity.Broadcast receiver can listen to BOOT broadcast but how do I start service first time when it is installed and how can I keep it running?or is there a broadcast which I can listen after app is installed e.g. may be TIME_TICK but that has to be registered from activity i think.
View 4 Replies View RelatedI would like to know the best practices for running a Service every day at 4AM.The way I think I should be doing it is to create a new repeating alarm using AlarmManager and having it run the service at 4AM. Problem is, I'm not sure where to put the code to set the alarm.Do I do it in my main activity as one of the first tasks in the OnCreate method? Do I do some funky stuff with BroadcastReceivers and intents? What happens when a user updates my app? What happens when a user restarts?Any help with these questions would be much appreciated.Sample code would be helpful as well!
View 1 Replies View RelatedWhat is, and when would it be good to use "IPC"?
View 1 Replies View RelatedI have an activity that contains a button in it,and once this button is clicked I start service ,but each time i press the button no service is started and this message appear in the LogCat Unable to start service intent {Package name}: Not found
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