Android :: Accessing Elements Of Widget From AppWidgetProvider

Nov 23, 2009

I have built a widget that contains a button and an editable TextView (that behaves like an EditText) much like the native Google Search bar widget. How can I access the text that the user has typed into the TextView? In an Activity I would just use findViewById(), but of course I can't do that in the AppWidgetProvider. (I get the error message "The method findViewById(int) is undefined for the type Widget.") So I tried to solve it by using a million casts, like so: String str = (String) ((TextView)((Activity) context).findViewById(R.id.txt_input)).getText(); Unfortunately, with that line present my app crashes. What is the correct way to get references to those Widget elements? I've read all about RemoteViews and Widgets and looked for examples where somebody does this (which seems like it would be common, but I guess not) but I haven't turned up a solution. What am I missing?.....

Android :: Accessing elements of widget from AppWidgetProvider


Android :: Add App Widget Through Created AppWidgetProvider?

Jul 14, 2010

I'm slighty puzzled about how android's AppWidget machinery works. I reimplemented the AppWidgetProvider's constructor like this:

public class MyProvider extends AppWidgetProvider {
public MyProvider() {
Log.d("TEST", "Creating...")
}
public void onUpdate(..., int[] appWidgetIds) {
// updating stuff here

From what I've read in the docs, I understood that AppWidgetProvider is instantiated once, when widget of that type is added for the first time. If another widget of the same type gets added, it will be managed by exactly that provider.But I just discovered that this is not the case. For each widget I add, android creates a new MyProvider (I see that from 'adb logcat' - it prints "Creating..." for each widget)!I don't understad why. Maybe I got something wrong? Or documentation isn't clear on something. What's the reason of having appWidgetIds passed to onUpdate and other methods if each provider is managing only ONE widget?

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Android :: Way To Display A ListView On A Home Widget With AppWidgetProvider?

Jun 5, 2010

I would like to create a Home Widget containing a ListView, but I don't know if this is possible and if it is, how to do it. I was using a ListActivity and it was pretty simple, but can't figure out a way to do it using AppWidgetProvider.

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Android :: Widget : Get Data From Configure Activity To AppWidgetProvider?

Feb 14, 2010

I'm writing a widget where i first have a configure screen where the user makes a selection. Then I want to pass that data on to the actual widget. This must be really simple but I just can find out how to do it.

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AsyncTask Put In Widget (AppWidgetProvider)?

Apr 5, 2013

I read from my web space from a text file and paste it in TextView.Everything works.

But now I want the (AppWidgetProvider) in my widget insert. My widget has a TextView.

So how can I connect a AsyncTask with a AppWidgetProvider?Tried it. But the app crashes from then.

My MainActivityl.class with AsyncTask it reads. And my AppProviderWidget.class

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Android :: AppWidgetProvider Not Inform When Adding Widget Fails Due To Not Enough Space

Dec 30, 2009

My app has a 1*4 icon size widget. When a user tries to add a widget I provide with a configuration screen. and some data is collected - it is verified by the server - it is added to the local DB with appWidgetID as the key - all is good. when user hits save, if there is not enough space, he is given a polite toast - "No more room on this home screen". Now my problem is that the application is not informed of this. Application still assumes the widget was created and sits back and wait for the broadcast to update the widget after certain amount of time.

Can anyone tell me if i can find out via a broadcast or a call back or any method possible to determine if the widget was not successfully created, so that i can mark that record in my DB as deleted. Or better if i can know the space available beforehand via some magic ninja code. my whole application design is disturbed because of this problem.

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Android :: Accessing An Element In Widget?

Apr 5, 2010

I'm using hierarchyviewer to look through a widget that I'm using. (TimePicker).

Now I can see that TimePicker contains id/decrement, id/increment and id/timepicker_input.

How do I get a reference to id/timepicker_input for example?

Tried my_picker.findViewWithTag("decrement"); but that returns null.

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Android :: Accessing Droid Moto Corporate Calendar Database For My Widget

Dec 10, 2009

I'm looking for a way to access the Corporate Calendar information/ database on the Droid. I know it can be done since I have seen a few folks promote supporting being able to read this information, but have found zero info on it. how to read this?

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Android :: AppWidgetProvider - 1.5 SDK?

Apr 21, 2009

I have a general question. Is it possible to set the RemoteView of the widget to a WebView? My goal is to push real time updates to the WebView via the comet technique (HTTP long polling), similar to how Google Talk does it on the desktop browser I suppose. Do you think battery life would be significantly impacted with this approach?

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Android :: AppWidgetProvider And BroadcastReceiver

Oct 2, 2009

I have an app widget that extends an AppWidgetProvider to create an application widget.

I would like the application widget to be idle until an activity in my app runs; actually when a service in my app is started.

Once that service is started, I need to "wake up" the application widget and communicate with it (i.e. tell it things to display).

So I see that AppWidgetProvider simply extends BroadcastReceiver -- so does that mean:

1. I need to call registerReceiver in my service and tell it to filter for certain kinds of events?

2. Can I even do #1, or will an AppWidgetProvider *only* accept ACTION_APPWIDGET_* intents?

3. If #2 is correct, how can I communicate or "wake up" / trigger the application widget?

4. Can I send events to my app widget using sendBroadcast( intent )?

Then, my app widget has some buttons on it, I need to send an intent back to the application (or service). I see you can do that with PendingIntents, but if i send the different intents it to the same Activity, it seems to re-use the first created pending intent.

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Android :: Pass Value From AppWidgetProvider?

Nov 8, 2010

I would like to pass a value from the AppWidgetProvider to a service. How can I do that? This value is taken from the widget configuration. If this value changes (by going to the configuration again), how do I pass it back to the service? Is there another way to do this?

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Android :: Model For AppWidgetProvider

Aug 2, 2010

I have a widget that shows some data fetched from the Internet. I may have multiple widgets visible on the screen, each displaying some data, partly the same as the other widgets. From time to time I re-fetch the data from the Internet and update the widget views. I've modeled this in an MVC style: I have a model which I can invoke a "re-fetch-data" on, and which the views listen on. My questions:

A) Is it wise to let my model be a singleton?
B) Can I rely on that all widgets are served by the same AppWidgetProvider? Or may some of my widgets get served by a different AppWidgetProvider instance? Or, more generally: Is there any guarantee that there will be only one instance of my AppWidgetProvider? If there is only one instance of my AppWidgetProvider, then I could use an instance variable here for the model, and pass either my AppWidgetProvider or the model around where needed. Perhaps a better option?

C) In the AppWidgetProviders onUpdate method, can I be sure that the same "context" object is passed as argument each invocation?

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Android :: Updating AppWidgetProvider From Service

Jan 1, 2010

Here is my issue, I want to be able to update a specific AppWidgetProvider (home screen widget) from a custom service class. I have to build the remote view in the service because I'm also doing some networking in there, which takes some time. The problem is that I can't figure out how to update a specific widget (individual widgets can have different update intervals, using the alarm manager). If I wanted to do it from the onUpdate of the AppWidgetProvider I could just call appWidgetManager.updateAppWidget(appWidgetId, remoteView); Does anyone have any experience with this or any suggestions?

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Android :: AppWidgetProvider And Screen Updating?

Nov 13, 2010

I am making a clock widget for the android home screen using AppWidgetProvider. I have it calling the TImerTask class that updates all my values using this code:

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds {
Timer timer = new Timer();
timer.scheduleAtFixedRate(new MyTime(context, appWidgetManager), 1, 1000);
}

In the TimerTasks run() I am setting a bunch of text views to the relevant values. My problem is that this seems to work fine, but it makes my home screen unresponsive, probably due to updating it every second. How do I fix this and still have it update the display at the correct time? (I only need to see minutes not seconds, but I want the minutes to change at the correct second.)

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Android :: AppWidgetProvider - Convenience Functions

Oct 30, 2009

It seems like the convenience functions (onUpdate, onEnabled, etc.) aren't being called in the emulator on Android 2.0. Is this a bug, or are these functions just being eliminated? It would have been nice to see this documented somewhere.

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Android :: Start AlertDialog From AppWidgetProvider

Aug 6, 2010

Anyone know if it is possible to add AlertDialog within a AppWidgetProvider class? Here is the code I am working on where I start the AlertDialog on onEnabled function call.

@Override public void onEnabled(Context context) { super.onEnabled(context); Log.v(TAG,"onEnabledWidget"); AlertDialog.Builder builder = new AlertDialog.Builder(context).setIcon( android.R.drawable.ic_dialog_info ).setTitle(R.string.app_name) .setMessage("This is testing") .setNeutralButton("Confirm", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { } }); alertNotSmc = builder.create(); alertNotSmc.show(); //runs when all of the first instance of the widget are placed //on the home screen .........

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Android :: Sending Event / Intent To AppWidgetProvider

Sep 30, 2009

From a service that's running, how do I send an event or an intent to an app widget that is just sitting their idle.

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Android :: Signal An AppWidgetProvider From Service Running In Another Process

Feb 2, 2010

I am attempting to signal my widget such that it receives my new Intent from my service

The code I am using to send from the service is as follows:

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

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Android :: ProgressBar Doesn't Allow Control Of Visibility In AppWidgetProvider

Aug 7, 2009

I was trying to set a progress bar to View.INVISIBLE or View.GONE, or View.VISIBLE inside an AppWidgetProvider. However, it doesn't seem to want to do it. Setting visibility works fine with TextView fields or ImageView fields or ImageButtons. However, ProgressBar doesn't seem to work. It doesn't make sense that just the progress bar type isn't supported for controlling visibility. Has anyone else seen this problem?

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Android :: Store State Information In AppWidgetProvider - Between OnUpdate Cycles

Aug 26, 2009

I know I can save information in a static attribute in a widget, however, is there a way for a widget instance to save the state information similar to the Activity onSaveInstanceState(Bundle outState) method? I don't want to write to a database for this state information.

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Android :: Way To Access Content Resolver Methodsn From AppWidgetProvider Class?

Dec 31, 2009

Is it possible to access the content resolver methods in a class extending from AppWidgetProvider class? Have been trying to do it with no luck so far.

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General :: GetAssets Not Allowed Inside Of AppWidgetProvider

Dec 3, 2011

Basically what I am trying to do is use a customer font in AppWidgetProvider to display a custom number font in my widget. The issue I am having is that getAssets is not allowed inside of AppWidgetProvider. I have read alot on google and forums about using custom fonts, it seems to be possible but not easy.

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Android :: Two XML Elements With Same Id

Nov 10, 2010

I'm trying to modify two TextViews in exactly the same way. I thought I can give them same id and with findViewById() and setText() methods change those TextViews in two lines. But it seems only one TextView is changed.Is there a way to do this?Or I have to make different ids for every element, get every element by findViewById() method and set it's text?

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Android :: Inner Elements During The Xml Parsing

Aug 23, 2010

I could not get any inner elements during the xml parsing. looks like parser see only outer tag A. Could you show me error?

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

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Android :: What UI Elements In AppWidget?

Apr 25, 2009

Just wonder what limitations there are for UI elements in AppWidgets? I tried a ListView and was met with an error. I saw the other post that EditText isn't available.Just wondering if there was a full list somewhere?

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Android : UI Elements Going Off Screen / Way To Fix?

Jun 1, 2010

I'm having trouble positioning the layout elements. The AutoComplete in my TableLayout and the button after it are expanding the TableRow larger than the width of the screen. Anyone have an idea why? Below is my XML code as well as a picture of the problem...

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Android :: Memory Error With UI Elements

Sep 1, 2010

In my application I change layouts very frequently with most of the user interactions. Each time when a new layout is drawn, the applications memory size is increasing. I can see this in DDMS. This is absolutely fine. I have analyzed my application with memory analyze tool and it shows that there around 42 Table layouts at some point of time and this number increase as user does more interactions with the app. Now my question is why doesn't the GC collect the stale layout objects. Does GC collect on UI widgets also??? I feel it does but can any one tell me what may be the reason for GC not collecting my UI elements.

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Android :: Programmatic UI - Setting IDs Of Some Elements

Feb 3, 2010

I need to add some parts of my UI programmatically. I'm doing this because I need to set the ids of some elements up in such a way that they can be easily access in a for loop. So far I have this xml:

<?xml version="1.0" encoding="utf-8"?> <LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/attr_row" android:layout_width="fill_parent"
android:layout_height="wrap_content"> <EditText android:id="@+id/attr_name"
android:hint="Attribute" android:layout_width="0dip" android:layout_weight="2"
android:layout_height="wrap_content" android:inputType="textPersonName" />
<EditText android:id="@+id/attr_val" android:hint="Value"
android:layout_width="0dip" android:layout_weight="3"
android:layout_height="wrap_content" android:inputType="textPersonName" />
<ImageButton android:id="@+id/drop_attr" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:background="@drawable/btn_delete_states"
android:layout_gravity="center_vertical" /> </LinearLayout>

At the moment, I inflate this xml five times like so:
for (int i = 0; i<5; i++) { LinearLayout attrList = (LinearLayout) findViewById (R.id.attr_list);
LayoutInflater inflater = getLayoutInflater();
View row = inflater.inflate(R.layout.attr_row, null);
LinearLayout extraAttr = (LinearLayout) row.findViewById (R.id.attr_row);
ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT);
attrList.addView(extraAttr, i, params); }

The link below shows two pictures - the layout hierarchy and the result in the emulator. http://picasaweb.google.com/bengoldcross/Android?authkey=Gv1sRgCJ785I...
As can be seen, the xml is inflated five times successfully but only one is actually displayed. Inspecting the hierarchy viewer a bit more explains why. The layout being displayed is at location x=0 y=111 all the others are being rendered at x=320 y=111. It would appear they are being displayed a) off screen and b) on top of each other. So, why are they and how do I stop it from happening?

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Android :: Sharing Elements Between Applications

Jun 10, 2010

Here's a quote from Android's Dev Guide: A central feature of Android is that one application can make use of elements of other applications (provided those applications permit it). For example, if your application needs to display a scrolling list of images and another application has developed a suitable scroller and made it available to others, you can call upon that scroller to do the work, rather than develop your own. Isn't it a bad practice to make an app dependent on other apps?

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Android :: Can't Place Elements / To Do As I Want Using Xml Layout?

Oct 1, 2010

I was wandering if there was a easy way to do the following without android layout
place an image central top
place a button center center
place a button left bottom
place a button right bottom

it doesn't sound that difficult no ?

well I can't figure out a way to place the elements as I want using stupid xml layout.

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