Android :: How Binding To Services Works

Jul 2, 2010

I'm a little confused on how binding to services works. I understand using Context.startService() starts the service and that bindService doesn't call onStartCommand. But my understanding is that if I use startService, I have to explicitly stop the service. But I want the service to die if there are no more activities bound to it.My problem is that calling bindService never calls onServiceConnected(), so my Service binder object is null. Does the service have to be explicitly started in order to bind to it? If so, how does it know to terminate when nothing is binding to it anymore, and how do I know if it's started so I can know to use the bound object?

Android :: how binding to services works


Motorola Droid :: Memory Usage Works When Open Running Services Tab?

Nov 14, 2010

how the memory works on my orginial motorola droid (2.2). When I open the running services tab I see this on the bottom:

Other: 54MB in 3 Avail:19MB+45MB in 7

I'm wondering if someone can explain what this means. I assume this is all coming out of the 256MB of Ram the droid has? I was also installing app's and got a memory low warning aftering firefox beta that was 14MB in size. I gather that almost all the apps do not support installing to the SD card yet if ever. So of like the 100 apps I have installed is it likley that they are all taking up room of the RAM of the 256MB? I'm also wondering if there is a good app that shows you how much of your RAM is full with apps, so you know when you need to uninstall some etc. Like you are using 200MB out of 256MB or whatever.

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Android :: What Are C Based Services And Java Based Services?

Aug 31, 2010

What are C based services and Java based services in Android? What is similarity and dissimilarity between them ? Are C based services available in Android?

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Android :: Should I Use Local Service Binding?

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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Android :: Binding Service To Activity

Dec 16, 2009

I am working on an android application, where the activity binds to a local service to perform certain tasks.Now I am binding the service in the OnCreate method of the Activity, after which the activity has to use the service object to invoke the functionality defined in the servicein the OnStart method. The problem here is that once a call "bindservice" has been made, we might not get the serviceobject immediately, so my service object would be null till that time. So i cannot invoke the service functions.So is there a way to determine in the activity that the service has been bound and the service object is valid and could be used now. For reference i'm attaching a code snippet for the same.

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Android :: Activity Service Binding

Mar 13, 2010

Can an Activity be bound to two different Services at the same time or do I have to unbind one Service before binding to the other one?

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Android :: Service Binding Relation

Apr 30, 2010

Can one service be bound to n activities?

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Android :: CountDownTimer Does Not Run After Binding To Service

Jun 24, 2010

After I Bind to a service inside the method I start a CountDownTimer. The problem is that the timer does not start counting down. I have gone through with the debugger and sure enough it is executing the method that starts the Timer.If I use a button to start the timer it works! What could I be doing wrong?

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Android :: Binding From SQLite To Gallery ?

Oct 19, 2010

I am just starting out with Android and I am attempting my first test app, but I am a bit stuck.

I have an SQLite database and a user is selecting a picture and a reference to this a long with a short description is getting stored in the database. This is all working fine, now I want to bind the images from to database to a gallery, but I am a bit confused how I do this.

My layout xml is as follows:

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

I want the gallery with a button below

My on create function I have the following:

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

I am using the notepad tutorial as an example and my class extends ListActivity.

When I run it I get the error

Your content must have a ListView whose id attribute is 'android.R.id.list'

I'm assuming I am using the wrong type of binding, but I can't seem to find anywhere that tells me how to bind from an sqlite DB to a gallery.

I also want to add a reference to the rowId in the gallery so when the image is clicked it will open the relevant page (so it can show the message)

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Android :: Getting Java Binding For Dbus To Run

Oct 19, 2009

Has anyone succeeded in running the Java bindings for dbus on Android? All indications point at dbus already running as a process within the Android OS, but there is no official access point for them through the Java interface.

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Android :: Multiple Activities Binding To A Service

Aug 3, 2010

I have a service component (common task for all my apps), which can be invoked by any of the apps. I am trying to access the service object from the all activities, I noticed that the one which created the service [startService(intent)] has the right informaion. But rest does not get the informaion needed.

My Code is as below:

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

If I invoke startService(intent). it creates a new service and runs in parallel to the other service.

If I don't invoke startService(intent), serviceObj.getData() retuns null value.

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Android :: TextViews Parametrization / Binding To Model Possible?

Feb 12, 2010

I am new to both Android and Stack Overflow. I have started developing and Android App and I am wondering two things:1) Is it possible to parametrize a TextView? Lets say I want to render a text message which states something like: "The user age is 38". Lets suppose that the user age is the result of an algorithm. Using some typical i18n framework I would write in my i18n file something like "The user age is {0}". Then at run time I would populate parameters accordingly. I haven't been able to figure out how to do this or similar approach in Android. 2) Let's suppose I have a complex object with many fields. Eg: PersonModel which has id, name, age, country, favorite video game, whatever. If I want to render all this information into a single layout in one of my activities the only way I have found is getting all needed TextViews by id and then populate them one by one through code. I was wondering if there is some mapping / binding mechanism in which I can execute something like: render(myPerson, myView) and that automatically through reflection each of the model properties get mapped into each of the TextViews. If someone has ever worked with SpringMVC, Im looking for something similar to their mechanism to map domain objects / models to views (e.g. spring:forms)

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Android :: ListView Data Binding From XML Parser

Aug 17, 2009

I currently building an android apps that retrieve data from a distant Web service and I search an efficient way to bind data form XML to ListView. I already use CursorAdapter and i search on the web for an "XmlAdapter". I read on Google IO topic "Coding for Life - Battery Life, That Is" (http://code.google.com/events/io/sessions/ CodingLifeBatteryLife.html) that is more efficient to use "stream parser" instead of "tree parser" but I don't find the way to build a class that implement ListAdapter because of stream parser can't navigate backward so I don't understand how implement method that use "position" parameter (How retrieve data before current XML Parser position?).

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Android :: Spinner Data Binding In Application

Sep 17, 2010

There is no solution for this?

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Android :: Binding Spinner To Custom XML Data

Jun 18, 2009

Can anyone tell me if its possible to create some kind of custom adapater for XML data to a Spinner? I'm wanting to create a set of XML data that contains city names & latitude/longitude positions but only display the city name in the Spinner and access the lat/long when a new city is selected.

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Android :: How To Get Data From Service In Widget Without Binding?

Nov 13, 2010

I am writing application that has service that provides real time data to subscribers via remote callback mechanism. Now I wanted to add a widget that visualizes essential part of this data but got error: "IntentReceiver components are not allowed to bind to services". So what's the right way to get data from that service?

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Android :: Binding Service To Activity Vs Application

Jul 1, 2010

Is there any fundamental difference in binding a service to an android.app.Activity vs binding it to an android.app.Application. I want to bind the service to an Application because I want to keep some global state/data in the Application instead of duplicating it in all my activities.

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Android :: Binding Images From Assets To A SimpleCursorAdapter

Nov 23, 2009

I was poking around in the documentation for the simpleCursorAdapter and I read that if the simpleCursorAdapter doesn't identify your images as resources it will assume they are URIs. My question is how do i retrieve the URI for an image placed into the asset folder of my application?

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Android :: Binding A Remote Service From An Activity

Nov 23, 2009

I am binding a remote service from an activity and unbind the same on the onPause of the Activity,when the activity again restarts i bind the service .It does bind with the remote service and i am also successful in getting the remote-service method getting executed after the restart.But when returning a message from the callback-RemoteCallbackList.the mCallbacks.beginBroadcast returns me 0 clients.Am i missing some thing here ?why am i am getting zero clients when I call mCallbacks.beginBroadcast.?

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

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Android :: Binding A Ksoap Object To An ArrayList?

Apr 13, 2010

I'm working on an app that calls a web service, then the webservice returns an array list. My problem is I am having trouble getting the data into the ArrayList and then displaying in a ListView. Any ideas what I am doing wrong? I know for a fact the web service returns an ArrayList. Everything seems to be working fine, just no data in the ListView or the ArrayList.....donned on me that the data the webservice responds with is a complex type. I really think that's where I am getting hung up, but not sure how to correct it.

I finally figured out my webservice returns a JSON Array. Now getting that over to the ArrayList and/or ListView is the challenge. I have a feeling that once this project is done, it might make for a great tutorial or example...

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

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Android :: Binder Is Leaked By Binding To A Service

Jul 30, 2010

I made a code for my understanding of Android Service class.

It has just a single Activity and Service in apk. Service is the same as the sample code of API reference as below: http://developer.android.com/intl/ja/reference/android/app/Service.ht...

A client side is an Activity based on the above sample, and just added the following code:

CODE:.......

My sample application has a check box which starts(binds)/unbind to the local service on a single process. The local service instance is created by every bind request (and destroyed by every unbind).

If I press the button repeatedly, then LocalService$LocalBinder is leaked!

The problem is not resolved even If I set an obtained binder to null (like below).

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

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Android :: Binding To Service In OnCreate() Or In OnResume()

Feb 20, 2010

I want to know what es the best place in an Activity to bind to a service? I saw examples doing it in onResume() and also in onCreate(). I was asking myself if it is not a problem putting it into onCreate(), cause in onPause() i will do a unbind to the service, so i dont get a serviceConnectionLeak, if i leave the activity. Now if i press the Home-Button and then switching to the HomeScreen, the Activity will unbind from the service, when i go back to the Activity from the Taskmanager, then onCreate() will not be called and if the Code is trying to access a function from the service i will get a null-pointer exception. If i bind and unbind only in onResume() and onPause() i dont have this problem.

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Android :: Binding To A Local Service From A BroadcastReceiver

Sep 15, 2010

My application has the following components: 2 Activities A Service and a BroadcastReceiver

Whenever the user updates the system time, my broadcast receiver receives the Intent.ACTION_TIME_CHANGED. Now when this happens I want to reschedule a Handler in my Service. How do I bind to a Service within my BroadcastReceiver?

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Android :: Binding Stings To TableView/TextView IDs

Aug 13, 2010

I have an Android activity that displays a list of log entries (using a cursor adapter and listview). When one of the entries is touched it kicks off an intent (passed with a bundle object containing the log details as strings) to another activity. The new activity is supposed to display the details in a custom TableView xml file I created, but I can not figure out how to bind the bundle strings to the id's defined in the TextView of the TableView.

I have included most my code below so you can see what I am trying to accomplish.

ViewEntry Class:

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

Here is view_list.xml I am trying to bind to:

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

I know what I am trying to do isn't right but hopefully it helps illustrate my intention.

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Android :: Binding Widgets With AppWidgetManager.bindAppWidget­Id

Feb 20, 2010

I've successfully built a small sample app where the user can add a appwidget, using the AppWidgetPicker, using the action AppWidgetManager.ACTION_APPWIDGET_PICK. When I do this, the AppWidgetPicker takes care of binding my appwidget-id to a provider. However, now I'd like to load some widgets without using the AppWidgetPicker (for instance, maybe I want to restore the added appwidgets when I restart the application or something).

I've tried the following code

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

But it fails with a SecurityException, even though I've added

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

To my manifest file. Is this the way to do it? (using AppWidgetManager.bindAppWidgetId). Im using the emulator, and android 2.1.

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Android :: One Local Service Multiple Binding Activities

Nov 20, 2010

I have a local Service to which multiple activites needs to bind. In the first launched Activity, bindService returns true and onServiceConnected is called. But in any additionally launched activites bindService returns false, and I can't get a reference to my Service.

How can multiple activities simultaneously be connected to a local Service?

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Android :: Binding Data From Database To Checkbox In ListView?

Oct 1, 2009

I'm trying to bind data from my SQLiteDatabase to a ListView. I'm currently using a SimpleCursorAdapter to fill in my ListView. Unfortunately this doesn't seem to work with setting a CheckBox's checked attribute. This is how I do it now; instead of changing the CheckBox's checked status the adapter is filling in the value to the text argument, so the value is displayed right of the CheckBox as text.

Java:
setListAdapter( new SimpleCursorAdapter( this, R.layout.mylist, data,
new String[] { Datenbank.DB_STATE, Datenbank.DB_NAME }, new int[] { R.id.list_checkbox, R.id.list_text } ) );

mylist.xml:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout android:id="@+id/LinearLayout01"
android:layout_width="fill_parent" android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android" >
<CheckBox android:text="" android:id="@+id/list_checkbox"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:checked="false" > </CheckBox>
<TextView android:text="" android:id="@+id/list_text" android:layout_width="wrap_content"
android:layout_height="wrap_content" > </TextView> </LinearLayout>

The field in the database is of course of type boolean and I've also tried to assign an id to the checked field to fill the value in.

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Android :: Checkbox In Listview With Custom Cursor Binding

Feb 14, 2010

I think I've tried everything(made focusable:false!!) and I cant capture in anyway the selected checkbox on my list item. Even OnItemClickListener, doesn't respond to any click. How can I retrieve checked checkboxes in my list item? My list item included: image view, 4 textviews and the checkbox. Some code:

this is in my ListActivity class:
final String columns[] = new String[] { MyUsers.User._ID, MyUsers.User.MSG, MyUsers.User.LOCATION }; int[] to = new int[] { R.id.toptext, R.id.bottomtext,R.id.ChkBox, R.id.Location}; Uri myUri = Uri.parse("content://com.idan.datastorageprovider/users"); Cursor cursor = getContentResolver().query(myUri, columns, null, null, null); startManagingCursor(cursor); ListCursorAdapter myCursorAdapter=new ListCursorAdapter(this, R.layout.listitem, cursor, columns, to); this.setListAdapter(myCursorAdapter);

And this is my Custom Cursor adapter class:
public class ListCursorAdapter extends SimpleCursorAdapter { private Context context; private int layout; public ListCursorAdapter(Context context, int layout, Cursor c, String[] from, int[] to) { super(context, layout, c, from, to); this.context = context; this.layout = layout;
} @Override public View newView(Context context, Cursor cursor, ViewGroup parent) { Cursor c = getCursor(); final LayoutInflater inflater = LayoutInflater.from(context); View v = inflater.inflate(layout, parent, false); return v;
} @Override public void bindView(View v, Context context, Cursor c) { TextView topText = (TextView) v.findViewById(R.id.toptext); if (topText != null) { topText.setText("");
} int nameCol = c.getColumnIndex(MyUsers.User.MSG); String name = c.getString(nameCol); TextView buttomTxt = (TextView) v.findViewById(R.id.bottomtext); if (buttomTxt != null) { buttomTxt.setText("Message: "+name); } nameCol = c.getColumnIndex(MyUsers.User.LOCATION);
name = c.getString(nameCol); TextView location = (TextView) v.findViewById(R.id.Location);
if (locationLinkTxt != null) { locationLinkTxt.setText(name);
}
I've tried many ways. many listeners, can't figure how to capture listener to my checkboxes. The data I am binding to the list items from the database, isn't concerned about the checkbox.. only the textviews. There isn't any connection between the database and the checkbox I have in the list's item.

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="100sp" android:focusable="false" android:focusableInTouchMode="false"> android:padding="6dip">
<ImageView android:layout_width="wrap_content"
android:layout_height="fill_parent" android:src="@drawable/icon"
android:id="@drawable/icon" android:layout_marginLeft="6dip"
android:focusable="false" android:focusableInTouchMode="false">

</ImageView> <LinearLayout android:id="@+id/LinearLayout01"
android:orientation="vertical" android:layout_width="1sp"
android:layout_height="fill_parent" android:layout_weight="1"
android:focusable="false" android:focusableInTouchMode="false">
<TextView android:id="@+id/toptext" android:layout_weight="1"
android:gravity="center_vertical" android:text="OrderNum"
android:singleLine="true" android:layout_height="0dp"
android:layout_width="wrap_content" android:focusable="false"
android:focusableInTouchMode="false">

</TextView> <TextView android:id="@+id/bottomtext" android:layout_height="wrap_content"
android:layout_width="wrap_content" android:focusable="false"
android:focusableInTouchMode="false" android:text="TweetMsg">
</TextView> <TextView android:id="@+id/twittLocation"
android:layout_weight="1" android:text="location" android:singleLine="true"
android:layout_width="fill_parent" android:layout_height="0dip"
android:focusable="false" android:focusableInTouchMode="false">
</TextView> <TextView android:layout_weight="1" android:id="@+id/twittLocationlink"
android:text="locationlink" android:gravity="fill_horizontal"
android:layout_width="fill_parent" android:layout_height="0dip"
android:focusable="false" android:focusableInTouchMode="false">
</TextView> </LinearLayout>
<CheckBox android:id="@+id/deleteTwittChkBox" android:text="Delete"
android:layout_width="wrap_content" android:layout_marginRight="2dp"
android:focusable="false" android:checked="false"
android:focusableInTouchMode="false" android:layout_height="fill_parent"></CheckBox>

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Android :: Service Binding - ServiceConnection.onServiceConnected Not Being Called

Sep 14, 2009

As a point of example for my problem, I wrote a single Activity which binds to a service and then accesses a property to display. The problem is that my TestServiceConnection.onServiceConnected method is never called, and I don't know why.

Here is the code:

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

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Android :: Using Activity Lifecycle Methods / What's Best Strategy For Binding?

Sep 15, 2010

I'm binding to a local Service (that is, not using IPC and AIDL) from several activities. I want to ensure that I'm not holding references to this service from activities that the user isn't using. My options are: 1.) to bind to the service in onCreate() and unbind in onDestroy(). 2.) bind in onStart() and unbind in onStop(). 3.) bind in onResume() and unbind in `onPause(). Or some combination of these. Which is the best-practice way of binding and unbinding to a local service? Do I not need to be concerned with holding local connections from stopped activities? Additionally, once bound to this particular service I am retrieving a Cursor which is attached to my ListActivity via a CursorAdapter. The data retrieved by the Cursor may have changed while the Activity was out of view so I want to requery it when the Activity is shown again. If I bind in onCreate() I can requery in onRestart(). If I bind in onResume() each time the data will be fresh because I'll query it in the Service's connected callback.

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