date:20100623

On Wed, Jun 23, 2010 at 1:03 AM, appsgrrl bettyoch...@gmail.com wrote:
 I'm tryng to get an IntentService to work, and I have extended
 IntentService, and I implemented a onHandletIntent(Intent) method.  I
 put some logging in there, but this method never gets called.

 I must be doing something really dumb, but I don't know what it is.

 Is there something else I need to implement or override, or whatever,
 to make this work?

No, that's pretty much it. Are you sure whatever is supposed to be
calling startService() is actually calling startService()?

-- 
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy

_The Busy Coder's Guide to *Advanced* Android Development_
Version 1.6 Available!

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[android-beginners] Problem with AppWidget Using a Service


I am trying to create a simple AppWidget using a service to initialize
the content in the onUpdate() method.  The data is not being refreshed
and logcat shows me the following warning:

AppWidgetService  W  updateAppWidgetProvider: provider doesn't exist:
ComponentInfo{com.jnc.zmanminder/com.jnc.zmanminder.ZMUpdateService}

I must be missing something obvious but I cannot figure it out.

My AppWidget class (edited for brevity) looks as follows:

public class ZmanMinderAppWidget extends AppWidgetProvider {
  public void onUpdate(Context context,
AppWidgetManager appWidgetManager, int[] appWidgetIds) {
context.startService(new Intent(context, ZMUpdateService.class));
  }
}

My Service class (edited for brevity) looks as follows:

public class ZMUpdateService extends Service {
  public void onStart(Intent intent, int startId) {
RemoteViews updateViews = buildUpdate(this);
ComponentName thisWidget = new ComponentName(this, ZMUpdateService.class);
AppWidgetManager manager = AppWidgetManager.getInstance(this);
manager.updateAppWidget(thisWidget, updateViews);
  }

  public IBinder onBind(Intent arg0) {
return null;
  }

  public RemoteViews buildUpdate(Context context) { 
Time time = new Time();
time.setToNow();
RemoteViews views = new 
RemoteViews(context.getPackageName(),R.layout.widget);
views.setTextViewText(R.id.time, time.format(%I:%M%p));
return views;
  }
}

The ZMUpdateService service is defined in my manifest file.

Thanks for any help.

...Jake


-- 
Jake Colman | Director, Software Development
Principia Partners LLC
101 West Elm Street | Conshohocken | PA 19428 | +1 (610) 755 9770
t: +1 (610) 755 9786 | c: +1 (610) 348 2788 | f: +1 (201) 221 8929
e: col...@ppllc.com | w: www.principiapartners.com
Credit technology innovation awards winner 2008 and 2009

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Re: [android-beginners] Problem with AppWidget Using a Service


Jake,

The error is in the way your code instantiates ComponentName.

Instead of:

ComponentName thisWidget = new ComponentName(this, ZMUpdateService.class);


Do this:

ComponentName thisWidget = new ComponentName(this,*ZmanMinderAppWidget*.class);


The error message was trying to convey same thing...

-- Kostya

23.06.2010 17:39, Jake Colman ?:

I am trying to create a simple AppWidget using a service to initialize
the content in the onUpdate() method.  The data is not being refreshed
and logcat shows me the following warning:

AppWidgetService  W  updateAppWidgetProvider: provider doesn't exist:
ComponentInfo{com.jnc.zmanminder/com.jnc.zmanminder.ZMUpdateService}

I must be missing something obvious but I cannot figure it out.

My AppWidget class (edited for brevity) looks as follows:

public class ZmanMinderAppWidget extends AppWidgetProvider {
   public void onUpdate(Context context,
 AppWidgetManager appWidgetManager, int[] appWidgetIds) {
 context.startService(new Intent(context, ZMUpdateService.class));
   }
}

My Service class (edited for brevity) looks as follows:

public class ZMUpdateService extends Service {
   public void onStart(Intent intent, int startId) {
 RemoteViews updateViews = buildUpdate(this);
 ComponentName thisWidget = new ComponentName(this, ZMUpdateService.class);
 AppWidgetManager manager = AppWidgetManager.getInstance(this);
 manager.updateAppWidget(thisWidget, updateViews);
   }

   public IBinder onBind(Intent arg0) {
 return null;
   }

   public RemoteViews buildUpdate(Context context) {
 Time time = new Time();
 time.setToNow();   
 RemoteViews views = new 
RemoteViews(context.getPackageName(),R.layout.widget);
 views.setTextViewText(R.id.time, time.format(%I:%M%p));
 return views;
   }
}

The ZMUpdateService service is defined in my manifest file.

Thanks for any help.

...Jake


   



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[android-beginners] Re: onHandleIntent(Intent) method does not get called

2010-06-23 Thread appsgrrl

Hi --

Thanks for replying. I also have a logging printout in the
onStartCommand() method, and that does show as being called.
If onStartCommand() is called, doesn't that mean my startService()
from my Activity has indeed started my IntentService?

Who ultimately calls onHandleIntent()? That's what I cannot figure
out from the docs.

Betty

On Jun 23, 4:02 am, Mark Murphy mmur...@commonsware.com wrote:
On Wed, Jun 23, 2010 at 1:03 AM, appsgrrl bettyoch...@gmail.com wrote:
I'm tryng to get an IntentService to work, and I have extended
IntentService, and I implemented a onHandletIntent(Intent) method. I
put some logging in there, but this method never gets called.

I must be doing something really dumb, but I don't know what it is.

Is there something else I need to implement or override, or whatever,
to make this work?

No, that's pretty much it. Are you sure whatever is supposed to be
calling startService() is actually calling startService()?

--
Mark Murphy (a Commons
Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy

_The Busy Coder's Guide to *Advanced* Android Development_
Version 1.6 Available!

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Re: [android-beginners] Problem with AppWidget Using a Service

On Wed, Jun 23, 2010 at 9:39 AM, Jake Colman col...@ppllc.com wrote:
 I am trying to create a simple AppWidget using a service to initialize
 the content in the onUpdate() method.  The data is not being refreshed
 and logcat shows me the following warning:

 AppWidgetService  W  updateAppWidgetProvider: provider doesn't exist:
 ComponentInfo{com.jnc.zmanminder/com.jnc.zmanminder.ZMUpdateService}

This means you are trying to state that ZMUpdateService is an
AppWidgetProvider, in one or more places in your code.

 public class ZMUpdateService extends Service {
  public void onStart(Intent intent, int startId) {
    RemoteViews updateViews = buildUpdate(this);
    ComponentName thisWidget = new ComponentName(this, ZMUpdateService.class);

Note: you are claiming your AppWidgetProvider is ZMUpdateService, when
it is really ZmanMinderAppWidget.

If it helps, here is a complete app widget example:

http://github.com/commonsguy/cw-advandroid/tree/master/AppWidget/Microblog/

It assumes you have an identi.ca account you can use.

-- 
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy

_The Busy Coder's Guide to *Advanced* Android Development_ Version 1.6
Available!

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Re: [android-beginners] Re: onHandleIntent(Intent) method does not get called

On Wed, Jun 23, 2010 at 10:37 AM, appsgrrl bettyoch...@gmail.com wrote:
 Thanks for replying.   I also have a logging printout in the
 onStartCommand() method, and that does show as being called.
 If onStartCommand() is called, doesn't that mean my startService()
 from my Activity has indeed started my IntentService?

Yes. However, be sure you are chaining to the superclass in
onStartCommand() -- otherwise, you will block IntentService from
dispatching your Intent to onHandleIntent() via the background thread.

 Who ultimately calls onHandleIntent()?

IntentService does.

-- 
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy

_The Busy Coder's Guide to *Advanced* Android Development_
Version 1.6 Available!

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Re: [android-beginners] Re: onHandleIntent(Intent) method does not get called


Betty,

Make sure your service calls base class methods in onCreate() and 
onStart(). Intents for processing are queued to a worker thread by 
IntentService.onStart. The worker thread is set up by onCreate.


class BettysService extends IntentService {

@Override
public void onCreate() {
... logging here ...
super.onCreate();
}

@Override
public void onStart(Intent intent, int startId) {
... logging here...
super.onStart(intent, startId);
}
.
}

BTW, Android source can be found here:

http://www.netmite.com/android/mydroid/1.6/frameworks/base/core/java/android/app/

-- Kostya

23.06.2010 18:37, appsgrrl пишет:

Hi --

Thanks for replying.   I also have a logging printout in the
onStartCommand() method, and that does show as being called.
If onStartCommand() is called, doesn't that mean my startService()
from my Activity has indeed started my IntentService?

Who ultimately calls onHandleIntent()?  That's what I cannot figure
out from the docs.

Betty


On Jun 23, 4:02 am, Mark Murphymmur...@commonsware.com  wrote:
   

On Wed, Jun 23, 2010 at 1:03 AM, appsgrrlbettyoch...@gmail.com  wrote:
 

I'm tryng to get an IntentService to work, and I have extended
IntentService, and I implemented a onHandletIntent(Intent) method.  I
put some logging in there, but this method never gets called.
   
 

I must be doing something really dumb, but I don't know what it is.
   
 

Is there something else I need to implement or override, or whatever,
to make this work?
   

No, that's pretty much it. Are you sure whatever is supposed to be
calling startService() is actually calling startService()?

--
Mark Murphy (a Commons 
Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy

_The Busy Coder's Guide to *Advanced* Android Development_
Version 1.6 Available!
 
   



--
Kostya Vasilev -- WiFi Manager + pretty widget -- http://kmansoft.wordpress.com

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[android-beginners] Re: Problem with AppWidget Using a Service


Kostya,

Thanks.  That worked like a charm.

I noticed in sample AppWidget code that does not use a service, that it
iterates the appWidgetIds array so that it updates all instances of the
widget.  However, in sample code that uses a Service, that iteration is
not done.  Is that because it is not needed for some reason?  How would
one update multiple instances using a service-based solution?

Thanks.

...Jake

 KV == Kostya Vasilyev kmans...@gmail.com writes:

   KV Jake,

   KV The error is in the way your code instantiates ComponentName.

   KV Instead of:

   KV ComponentName thisWidget = new ComponentName(this, 
ZMUpdateService.class);

   KV Do this:

   KV ComponentName thisWidget = new
   KV ComponentName(this,*ZmanMinderAppWidget*.class);

   KV The error message was trying to convey same thing...

   KV -- Kostya

   KV 23.06.2010 17:39, Jake Colman ?:
I am trying to create a simple AppWidget using a service to initialize
the content in the onUpdate() method.  The data is not being refreshed
and logcat shows me the following warning:

AppWidgetService  W  updateAppWidgetProvider: provider doesn't exist:
ComponentInfo{com.jnc.zmanminder/com.jnc.zmanminder.ZMUpdateService}

I must be missing something obvious but I cannot figure it out.

My AppWidget class (edited for brevity) looks as follows:

public class ZmanMinderAppWidget extends AppWidgetProvider {
public void onUpdate(Context context,
AppWidgetManager appWidgetManager, int[] appWidgetIds) {
context.startService(new Intent(context, ZMUpdateService.class));
}
}

My Service class (edited for brevity) looks as follows:

public class ZMUpdateService extends Service {
public void onStart(Intent intent, int startId) {
RemoteViews updateViews = buildUpdate(this);
ComponentName thisWidget = new ComponentName(this,
ZMUpdateService.class);
AppWidgetManager manager = AppWidgetManager.getInstance(this);
manager.updateAppWidget(thisWidget, updateViews);
}

public IBinder onBind(Intent arg0) {
return null;
}

public RemoteViews buildUpdate(Context context) { 
Time time = new Time();
time.setToNow();  
RemoteViews views = new
RemoteViews(context.getPackageName(),R.layout.widget);
views.setTextViewText(R.id.time, time.format(%I:%M%p));
return views;
}
}

The ZMUpdateService service is defined in my manifest file.

Thanks for any help.

...Jake




   KV -- 
   KV Kostya Vasilev -- WiFi Manager + pretty widget --
   KV http://kmansoft.wordpress.com

   KV -- 
   KV You received this message because you are subscribed to the Google
   KV Groups Android Beginners group.

   KV NEW! Try asking and tagging your question on Stack Overflow at
   KV http://stackoverflow.com/questions/tagged/android

   KV To unsubscribe from this group, send email to
   KV android-beginners+unsubscr...@googlegroups.com
   KV For more options, visit this group at
   KV http://groups.google.com/group/android-beginners?hl=en

-- 
Jake Colman -- Android Tinkerer

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Re: [android-beginners] Re: Problem with AppWidget Using a Service


Jake,

onUpdate is passed an explicit list of just the widget ids that need to 
be updated. Supposedly, there could be widgets that belong to this 
provider but don't need updating (e.g. on a scrolled-off home screen 
portion).


Pushing a RemoveViews object to a paricular widget is done by calling:

manager.updateAppWidget(int widgetId, updateViews);


It's also possible to update all widgets that belong to a particular 
widget provider, and this is the approach service-based widgets take, 
supposedly to avoid paying service start-up costs for each widget id.


In this case, a single RemoteViews is pushed to all widgets with a 
single call to:


manager.updateAppWidget(ComponentName thisWidget, updateViews);


-- Kostya

23.06.2010 18:57, Jake Colman пишет:

Kostya,

Thanks.  That worked like a charm.

I noticed in sample AppWidget code that does not use a service, that it
iterates the appWidgetIds array so that it updates all instances of the
widget.  However, in sample code that uses a Service, that iteration is
not done.  Is that because it is not needed for some reason?  How would
one update multiple instances using a service-based solution?

Thanks.

...Jake

   

KV == Kostya Vasilyevkmans...@gmail.com  writes:
 

KV  Jake,

KV  The error is in the way your code instantiates ComponentName.

KV  Instead of:

KV  ComponentName thisWidget = new ComponentName(this, 
ZMUpdateService.class);

KV  Do this:

KV  ComponentName thisWidget = new
KV  ComponentName(this,*ZmanMinderAppWidget*.class);

KV  The error message was trying to convey same thing...

KV  -- Kostya

KV  23.06.2010 17:39, Jake Colman ?:
  I am trying to create a simple AppWidget using a service to initialize
  the content in the onUpdate() method.  The data is not being refreshed
  and logcat shows me the following warning:

  AppWidgetService  W  updateAppWidgetProvider: provider doesn't exist:
  ComponentInfo{com.jnc.zmanminder/com.jnc.zmanminder.ZMUpdateService}

  I must be missing something obvious but I cannot figure it out.

  My AppWidget class (edited for brevity) looks as follows:

  public class ZmanMinderAppWidget extends AppWidgetProvider {
  public void onUpdate(Context context,
  AppWidgetManager appWidgetManager, int[] appWidgetIds) {
  context.startService(new Intent(context, ZMUpdateService.class));
  }
  }

  My Service class (edited for brevity) looks as follows:

  public class ZMUpdateService extends Service {
  public void onStart(Intent intent, int startId) {
  RemoteViews updateViews = buildUpdate(this);
  ComponentName thisWidget = new ComponentName(this,
  ZMUpdateService.class);
  AppWidgetManager manager = AppWidgetManager.getInstance(this);
  manager.updateAppWidget(thisWidget, updateViews);
  }

  public IBinder onBind(Intent arg0) {
  return null;
  }

  public RemoteViews buildUpdate(Context context) { 
  Time time = new Time();
  time.setToNow();  
  RemoteViews views = new
  RemoteViews(context.getPackageName(),R.layout.widget);
  views.setTextViewText(R.id.time, time.format(%I:%M%p));
  return views;
  }
  }

  The ZMUpdateService service is defined in my manifest file.

  Thanks for any help.

  ...Jake




KV  -- 
KV  Kostya Vasilev -- WiFi Manager + pretty widget --

KV  http://kmansoft.wordpress.com

KV  -- 
KV  You received this message because you are subscribed to the Google

KV  Groups Android Beginners group.

KV  NEW! Try asking and tagging your question on Stack Overflow at
KV  http://stackoverflow.com/questions/tagged/android

KV  To unsubscribe from this group, send email to
KV  android-beginners+unsubscr...@googlegroups.com
KV  For more options, visit this group at
KV  http://groups.google.com/group/android-beginners?hl=en

   



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Re: [android-beginners] how to change colours in a .xml defined layout in run time

2010-06-23 Thread TreKing

On Wed, Jun 16, 2010 at 6:55 AM, ckloch htc.kl...@hotmail.com wrote:

 In theory it seems to be easy, but I would highly appreciate your help on
 how to do this in Android as I cannot see how I start changing the colours
 of the individual bar in the screen after initially defining the screen.


Whatever View you're using to represent the bars should have some background
property for changing it's background image or color. Try that.

-
TreKing - Chicago transit tracking app for Android-powered devices
http://sites.google.com/site/rezmobileapps/treking

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[android-beginners] Re: Problem with AppWidget Using a Service


Kostya,

That makes perfect sense.  It seems like a service-based update is
really the right way to go.  It avoids any potential timeout issue and
is allows updating of all widgets at once.

Thanks for your help.

...Jake


 KV == Kostya Vasilyev kmans...@gmail.com writes:

   KV Jake,

   KV onUpdate is passed an explicit list of just the widget ids that
   KV need to be updated. Supposedly, there could be widgets that
   KV belong to this provider but don't need updating (e.g. on a
   KV scrolled-off home screen portion).

   KV Pushing a RemoveViews object to a paricular widget is done by
   KV calling:

   KV manager.updateAppWidget(int widgetId, updateViews);

   KV It's also possible to update all widgets that belong to a
   KV particular widget provider, and this is the approach
   KV service-based widgets take, supposedly to avoid paying service
   KV start-up costs for each widget id.

   KV In this case, a single RemoteViews is pushed to all widgets with
   KV a single call to:

   KV manager.updateAppWidget(ComponentName thisWidget, updateViews);

   KV -- Kostya

   KV 23.06.2010 18:57, Jake Colman пишет:
Kostya,

Thanks.  That worked like a charm.

I noticed in sample AppWidget code that does not use a service, that it
iterates the appWidgetIds array so that it updates all instances of the
widget.  However, in sample code that uses a Service, that iteration is
not done.  Is that because it is not needed for some reason?  How would
one update multiple instances using a service-based solution?

Thanks.

...Jake


KV == Kostya Vasilyevkmans...@gmail.com  writes:

   KV Jake,

   KV The error is in the way your code instantiates ComponentName.

   KV Instead of:

   KV ComponentName thisWidget = new ComponentName(this,
   KV ZMUpdateService.class);

   KV Do this:

   KV ComponentName thisWidget = new
   KV ComponentName(this,*ZmanMinderAppWidget*.class);

   KV The error message was trying to convey same thing...

   KV -- Kostya

   KV 23.06.2010 17:39, Jake Colman ?:
  I am trying to create a simple AppWidget using a service to
  initialize
  the content in the onUpdate() method.  The data is not being
  refreshed
  and logcat shows me the following warning:

  AppWidgetService W updateAppWidgetProvider: provider doesn't exist:
  ComponentInfo{com.jnc.zmanminder/com.jnc.zmanminder.ZMUpdateService}

  I must be missing something obvious but I cannot figure it out.

  My AppWidget class (edited for brevity) looks as follows:

  public class ZmanMinderAppWidget extends AppWidgetProvider {
  public void onUpdate(Context context,
  AppWidgetManager appWidgetManager, int[] appWidgetIds) {
  context.startService(new Intent(context, ZMUpdateService.class));
  }
  }

  My Service class (edited for brevity) looks as follows:

  public class ZMUpdateService extends Service {
  public void onStart(Intent intent, int startId) {
  RemoteViews updateViews = buildUpdate(this);
  ComponentName thisWidget = new ComponentName(this,
  ZMUpdateService.class);
  AppWidgetManager manager = AppWidgetManager.getInstance(this);
  manager.updateAppWidget(thisWidget, updateViews);
  }

  public IBinder onBind(Intent arg0) {
  return null;
  }

  public RemoteViews buildUpdate(Context context) { 
  Time time = new Time();
  time.setToNow();  
  RemoteViews views = new
  RemoteViews(context.getPackageName(),R.layout.widget);
  views.setTextViewText(R.id.time, time.format(%I:%M%p));
  return views;
  }
  }

  The ZMUpdateService service is defined in my manifest file.

  Thanks for any help.

  ...Jake




   KV -- 
   KV Kostya Vasilev -- WiFi Manager + pretty widget --
   KV http://kmansoft.wordpress.com

   KV -- 
   KV You received this message because you are subscribed to the Google
   KV Groups Android Beginners group.

   KV NEW! Try asking and tagging your question on Stack Overflow at
   KV http://stackoverflow.com/questions/tagged/android

   KV To unsubscribe from this group, send email to
   KV android-beginners+unsubscr...@googlegroups.com
   KV For more options, visit this group at
   KV http://groups.google.com/group/android-beginners?hl=en



   KV -- 
   KV Kostya Vasilev -- WiFi Manager + pretty widget --
   KV http://kmansoft.wordpress.com

   KV -- 
   KV You received this message because you are subscribed to the Google
   KV Groups Android Beginners group.

   KV NEW! Try asking and tagging your question on Stack Overflow at
   KV http://stackoverflow.com/questions/tagged/android

   KV To unsubscribe from this group, send email to
   KV android-beginners+unsubscr...@googlegroups.com
   KV For more options, visit this group at
   KV

[android-beginners] Re: Problem with AppWidget Using a Service

 MM == Mark Murphy mmur...@commonsware.com writes:

   MM If it helps, here is a complete app widget example:

   MM 
http://github.com/commonsguy/cw-advandroid/tree/master/AppWidget/Microblog/

   MM It assumes you have an identi.ca account you can use.


Indeed it does and indeed I do.  I am already a subscriber to your
excellent books.

-- 
Jake Colman -- Android Tinkerer

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Re: [android-beginners] Re: Problem with AppWidget Using a Service


Jake,

Using a service for a widget that's not doing anything lengthy to 
prepare updates seems like a bit of an overkill. Certainly it works, but 
probably not necessary.


On the other hand, using a service is definitely the way to go for 
widgets that fetch data from the Internet or some other way that can 
take a long time.


Another issue is - this is all good, until someone uses a task killer, 
discovers the service, complains that the widget spanws an unnecessary 
service that uses too much memory and cpu time, kills it, and 
uninstalls. Has happened to me.


Good thing Android 2.x includes great tools to show how memory and 
battery are used.


I hope users learn to use these tools and exercise good judgement before 
killing a service just because it's there.


-- Kostya

23.06.2010 20:15, Jake Colman пишет:

Kostya,

That makes perfect sense.  It seems like a service-based update is
really the right way to go.  It avoids any potential timeout issue and
is allows updating of all widgets at once.

Thanks for your help.

...Jake


   

KV == Kostya Vasilyevkmans...@gmail.com  writes:
 

KV  Jake,

KV  onUpdate is passed an explicit list of just the widget ids that
KV  need to be updated. Supposedly, there could be widgets that
KV  belong to this provider but don't need updating (e.g. on a
KV  scrolled-off home screen portion).

KV  Pushing a RemoveViews object to a paricular widget is done by
KV  calling:

KV  manager.updateAppWidget(int widgetId, updateViews);

KV  It's also possible to update all widgets that belong to a
KV  particular widget provider, and this is the approach
KV  service-based widgets take, supposedly to avoid paying service
KV  start-up costs for each widget id.

KV  In this case, a single RemoteViews is pushed to all widgets with
KV  a single call to:

KV  manager.updateAppWidget(ComponentName thisWidget, updateViews);

KV  -- Kostya

KV  23.06.2010 18:57, Jake Colman пишет:
  Kostya,

  Thanks.  That worked like a charm.

  I noticed in sample AppWidget code that does not use a service, that it
  iterates the appWidgetIds array so that it updates all instances of the
  widget.  However, in sample code that uses a Service, that iteration is
  not done.  Is that because it is not needed for some reason?  How would
  one update multiple instances using a service-based solution?

  Thanks.

  ...Jake


  KV == Kostya Vasilyevkmans...@gmail.com   writes:

KV  Jake,

KV  The error is in the way your code instantiates ComponentName.

KV  Instead of:

KV  ComponentName thisWidget = new ComponentName(this,
KV  ZMUpdateService.class);

KV  Do this:

KV  ComponentName thisWidget = new
KV  ComponentName(this,*ZmanMinderAppWidget*.class);

KV  The error message was trying to convey same thing...

KV  -- Kostya

KV  23.06.2010 17:39, Jake Colman ?:
 I am trying to create a simple AppWidget using a service to
 initialize
 the content in the onUpdate() method.  The data is not being
 refreshed
 and logcat shows me the following warning:
  
 AppWidgetService W updateAppWidgetProvider: provider doesn't exist:
 
ComponentInfo{com.jnc.zmanminder/com.jnc.zmanminder.ZMUpdateService}
  
 I must be missing something obvious but I cannot figure it out.
  
 My AppWidget class (edited for brevity) looks as follows:
  
 public class ZmanMinderAppWidget extends AppWidgetProvider {
 public void onUpdate(Context context,
 AppWidgetManager appWidgetManager, int[] appWidgetIds) {
 context.startService(new Intent(context, ZMUpdateService.class));
 }
 }
  
 My Service class (edited for brevity) looks as follows:
  
 public class ZMUpdateService extends Service {
 public void onStart(Intent intent, int startId) {
 RemoteViews updateViews = buildUpdate(this);
 ComponentName thisWidget = new ComponentName(this,
 ZMUpdateService.class);
 AppWidgetManager manager = AppWidgetManager.getInstance(this);
 manager.updateAppWidget(thisWidget, updateViews);
 }
  
 public IBinder onBind(Intent arg0) {
 return null;
 }
  
 public RemoteViews buildUpdate(Context context) {  
 Time time = new Time();
 time.setToNow();   
 RemoteViews views = new
 RemoteViews(context.getPackageName(),R.layout.widget);
 views.setTextViewText(R.id.time, time.format(%I:%M%p));
 return views;
 }
 }
  
 The ZMUpdateService service is defined in my manifest file.
  
 Thanks for any help.
  
 ...Jake
  
  
  

KV  -- 
KV  Kostya Vasilev -- WiFi

Re: [android-beginners] Re: Problem with AppWidget Using a Service

On Wed, Jun 23, 2010 at 12:36 PM, Kostya Vasilyev kmans...@gmail.com wrote:
 On the other hand, using a service is definitely the way to go for widgets
 that fetch data from the Internet or some other way that can take a long
 time.

There are (at least) three costs to doing work in the app widget
itself versus an IntentService:

1. The app widget provider might get killed if it takes too long (~10 seconds).

2. Tying up the main application thread, even for fairly short bursts,
will cause your app's activity, if visible to freeze up. Even really
short bursts (e.g., 250ms) can cause your UI to appear janky if the
user is actively using it.

3. Your code is running at foreground priority, and so it will steal
CPU cycles from anything truly in the foreground, such as a real-time
game.

Since app widget providers themselves cannot maintain state, they
inevitably have to use flash storage, even if just for reads. Doing a
simple database query is perhaps fast enough that you could get away
with doing it in the app widget provider itself. However, if you write
to flash, you want to move that to the IntentService, because flash
writes can get crazy slow (see the Zippy Android Apps presentation
from Google I|O 2010). And, of course, network I/O may take
indefinitely long.

Hence, unless the app widget functionality is trivially small, you're
probably going to want an IntentService, task killers be damned.

-- 
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy

_The Busy Coder's Guide to *Advanced* Android Development_
Version 1.6 Available!

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[android-beginners] Application crashing

2010-06-23 Thread Varun Khanduja

Hello,

I am trying to make a small To do list application. The application
keeps crashing on and saying, the application closed and please try
again. The message also has force close option.

Here is the code, does anyone has an idea what's wrong?

Thanks

package com.todolist;

import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnKeyListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;

public class todolist extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
// Inflate your view
setContentView(R.layout.main);
// Get references to UI widgets
ListView myListView = (ListView)findViewById(R.id.myListView);
final EditText myEditText =
(EditText)findViewById(R.id.myListView);

// Create the array list of to do items
final ArrayListString todoItems = new ArrayListString();
// Create the array adapter to bind the array to the listview
final ArrayAdapterString aa; aa = new
ArrayAdapterString(this,


android.R.layout.simple_list_item_1,

todoItems);
// Bind the array adapter to the listview.
myListView.setAdapter(aa);
myEditText.setOnKeyListener(new OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN)
if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
todoItems.add(0, myEditText.getText().toString());
aa.notifyDataSetChanged(); myEditText.setText();
return true;
} return false;
} });
}
}

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Re: [android-beginners] Application crashing

On Wed, Jun 23, 2010 at 1:28 PM, Varun Khanduja varunkhand...@gmail.com wrote:
 I am trying to make a small To do list application. The application
 keeps crashing on and saying, the application closed and please try
 again. The message also has force close option.

 Here is the code, does anyone has an idea what's wrong?

Use adb logcat, DDMS, or the DDMS perspective in Eclipse to examine
the Java stack trace associated with your crash, so you can see where
in your code the problem occurs.

-- 
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy

_The Busy Coder's Guide to *Advanced* Android Development_
Version 1.6 Available!

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Re: [android-beginners] Application crashing

2010-06-23 Thread Simon Platten


Hi,

Your onCreate method is not calling the default:

super.onCreate( icicle );

Also, I would wrap the body of the code in a try{ } catch( Exception ex 
) clause.


Hope this helps,
Sy




Varun Khanduja wrote:

Hello,

I am trying to make a small To do list application. The application
keeps crashing on and saying, the application closed and please try
again. The message also has force close option.

Here is the code, does anyone has an idea what's wrong?

Thanks

package com.todolist;

import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnKeyListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;

public class todolist extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
// Inflate your view
setContentView(R.layout.main);
// Get references to UI widgets
ListView myListView = (ListView)findViewById(R.id.myListView);
final EditText myEditText =
(EditText)findViewById(R.id.myListView);

// Create the array list of to do items
final ArrayListString todoItems = new ArrayListString();
// Create the array adapter to bind the array to the listview
final ArrayAdapterString aa; aa = new
ArrayAdapterString(this,


android.R.layout.simple_list_item_1,

todoItems);
// Bind the array adapter to the listview.
myListView.setAdapter(aa);
myEditText.setOnKeyListener(new OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN)
if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
todoItems.add(0, myEditText.getText().toString());
aa.notifyDataSetChanged(); myEditText.setText();
return true;
} return false;
} });
}
}

  


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Re: [android-beginners] Application crashing

2010-06-23 Thread Justin Anderson

One other thing to mention... These groups are not only great for posting
questions but also for searching through them to find other posts with the
same problem or question that may already have an answer.

In particular, your question is one that has been answered many times over
and a quick search for Force Close or Crash probably would have given
you several posts with the same answers that Mark and Simon gave.

Not only does it prevent the group from getting bloated with duplicate
questions, it can also help improve your development time because you don't
have to constantly wait for responses to your questions.

Thanks,
Justin

--
There are only 10 types of people in the world...
Those who know binary and those who don't.
--

On Wed, Jun 23, 2010 at 11:41 AM, Mark Murphy mmur...@commonsware.comwrote:

On Wed, Jun 23, 2010 at 1:28 PM, Varun Khanduja varunkhand...@gmail.com
wrote:
I am trying to make a small To do list application. The application
keeps crashing on and saying, the application closed and please try
again. The message also has force close option.

Here is the code, does anyone has an idea what's wrong?

Use adb logcat, DDMS, or the DDMS perspective in Eclipse to examine
the Java stack trace associated with your crash, so you can see where
in your code the problem occurs.

--
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy

_The Busy Coder's Guide to *Advanced* Android Development_
Version 1.6 Available!

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[android-beginners] Re: Problem with AppWidget Using a Service