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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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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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?.....
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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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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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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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Apr 11, 2010
I have a widget that supposed to call an Activity of the main app when the user clicks on widget body. My setup works for a single widget instance but for a second instance of the same widget the PendingIntent gets reused and as result the vital information that I'm sending as extra gets overwritten for the 1st instance. So I figured that I should pass widget ID as Intent data however as soon as I add Intent#setData I would see in the log that 2 separate Intents are appropriately fired but the Activity fails to pick it up so basically Activity will not come up and nothing happens (no error or warning ether)
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Oct 17, 2010
I have a ListView that with alphabetical headers for each letter. I also have an index function that brings the letter headers to the top of the screen.
My problem is when I reach the end of the list setSelection is unable to bring the last few headers to the top because it will not scroll past the end of the list.
My question is this: Is there a way to add a blank space to the end of the screen dependent on screen size? I would like to scroll until the last item in the list is at the top of the listView.
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May 5, 2010
I am trying to add an HTML content to a web view. If the words in the HTML content are without spaces then webview keeps that particular word on the same line.I want that content to be wrapped and be on the next line.Is it possible to do that.I am attaching a sample code that can reproduce the issue.
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Jun 4, 2010
I am developing an application in Eclipse build ID 20090920-1017 using android SDK 2.2 and testing on a Google Nexus One. For the purposes of the tests below I am using the IME "Android keyboard" on a non-rooted phone.I have an EditText widget which exhibits some very strange behavior. I can type text, and then press the "del" key to delete that text; but after I enter a 'space' character, the "del" key will no longer remove characters before that space character.An example speaks a thousand words, so consider the following two incredibly simple applications.Example 1: An EditText in a LinearLayout widget:
package com.example.linear.edit;
import android.app.Activity;
import android.os.Bundle;
import android.view.ViewGroup.LayoutParams;
import android.widget.EditText;
import android.widget.Gallery;
import android.widget.LinearLayout;
public class LinearEdit extends Activity
@Override
public void onCreate(Bundle savedInstanceState)
{super.onCreate(savedInstanceState);
LinearLayout layout = new LinearLayout(getApplicationContext());
layout.setLayoutParams(new Gallery.LayoutParams(Gallery.LayoutParams.MATCH_PARENT, Gallery.LayoutParams.MATCH_PARENT));
EditText edit = new EditText(getApplicationContext());
layout.addView(edit, new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
setContentView(layout);
}Run the above application, enter text "edit example", then press the "del" key several times until the entire sentence is deleted. Everything Works fine.Now consider example 2: An EditText in a Gallery widget:
package com.example.gallery.edit;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.Gallery;
import android.widget.LinearLayout;
public class GalleryEdit extends Activity
{ private final String[] galleryData = {"string1", "string2", "string3"};
@Override
public void onCreate(Bundle savedInstanceState)
{super.onCreate(savedInstanceState);
Gallery gallery = new Gallery(getApplicationContext());
gallery.setAdapter(new ArrayAdapter(getApplicationContext(), android.R.layout.simple_list_item_1, galleryData)
@Override
public View getView(int position, View convertView, ViewGroup parent)
{LinearLayout layout = new LinearLayout(getApplicationContext());
layout.setLayoutParams(new Gallery.LayoutParams(Gallery.LayoutParams.MATCH_PARENT, Gallery.LayoutParams.MATCH_PARENT));
EditText edit = new EditText(getApplicationContext());
layout.addView(edit, new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)); return layout; setContentView(gallery);
}Run the above application, enter text "edit example", then press the "del" key several times. If you are getting the same problem as me then you will find that you can't deleted past the 'space' character. All is not well.If anyone could shed some light on this issue I would be most appreciative.
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Apr 22, 2010
I rooted my phone for the first time yesterday, which was easier than I thought, and I flashed Fresh 2.0d and it is running awesome. I am having one issue and that is downloading the HTC battery widget back to my phone, it fails on install. Is that because the battery is being sent to the SD card and it can't run there? Any work around on that? Or is there a better battery app out there to use?
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Oct 14, 2010
I want to add a caption which looks like the default text below an app icon to the widget of my app. Is there any common way to achieve this?
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Apr 30, 2010
I cant seem to figure out how to add the admob widget into my application. i want to add the widget to a linearlayout that is the child of a relative layout. the linerlayout was created just for the ad. and have it update/refresh the ad each time a button is pressed. i have already imported the JAR,edited my manifest to include the permissions and publisher id. but i cant seem to exactly figure out how to add integrate the admob code.
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Nov 9, 2009
For a widget I am creating for the Android OS, I want the user to first select a certain option from a Spinner. Just like when you add a shortcut to the homescreen.
Is that possible or do you have to start an Activity? If it is possible, can anyone explain how to do it?
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Mar 31, 2010
I just want to get numbers of times to be used for each Activity.
So the very straightforward method I thought is increasing the count for an Activity when it was started. But how can I get the information?
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Oct 30, 2010
When publishing an update on the Android Market, is there any way to inform users of fixes & new features? I just published my first app and am still getting used to everything about the experience, including being taken aback by the types of comments that some people post. But I am definitely impressed with the error reporting capabilities!
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Jan 12, 2010
I have registered a BOOT_COMPLETED Receiver in my application, i want to listen for changes on SMS Database.
The BroadcastReceiver starts a temporary Service which registers the ContentObserver.
Now i want to notify my main activity (which is not started) that the Observer was registered successful.
(I want to do this, because if a user installs the app for the first time he don't restart his phone but needs the ContentObserver too. If you have another idea how to do that you can post it. I just want the information that the observer is registered already)
My idea was to notify the activity with a static attribute:
CODE:........
But i think that is not good and doesn't work because the activity isn't started and this is ignored.
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Mar 30, 2010
I just want to get numbers of times to be used for each app. So the very straightforward method I thought is increasing the count for an app when it's icon was clicked.
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Feb 17, 2010
Maybe it's easy, but I couldn't really figure this out right so far... I got a BroadcastReceiver waiting to get triggered by the AlarmMangager - this works fine.
Now: because the event, if it occurs, needs to refresh some elements on screen of the main Activity, I would like to send an Intent from that background BroadcastReceiver to my Activity - but only if it is currently in the foreground, aka active.
If it is not running or not visible, I don't care - and the last thing I want to do is start the Activity by my intent! I handle repainting of the views in my onResume method, so I don't care at all.
EDIT: my BroadcastReceiver is waiting for alarms that must be notified to the user. So, it must be there and declared in the manifest. The problem is: it will have to decide whether the mentioned Activity is currently up in front or not.
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Jun 26, 2012
Code:
06-26 14:28:07.557: W/dalvikvm(244): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
06-26 14:28:07.557: E/AndroidRuntime(244): Uncaught handler: thread main exiting due to uncaught exception
06-26 14:28:07.557: E/AndroidRuntime(244): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.danielholst.batterywidgetz/com.danielholst.batterywidgetz.Setup}: java.lang.NullPointerException
06-26 14:28:07.557: E/AndroidRuntime(244): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417)
[code]....
why i get these errors,but it happends right when i add the widget, i believe i might have something to do with the settings activity,it used to work, but then suddenly stops working...
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Aug 19, 2010
I have a widget that displays a set of information. What I would like to do is to give the user the opportunity to choose the background color/image. I would like to have a popup when the user is selecting the widget to choose the background. So how would I make the popup? And how would I apply the background dynamically?
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Jun 13, 2010
just bought the ally for my wife (i have a droid) well the internal memory widget from the market says she has 152mb of storage space. this was less than the eris she had before how could this be?
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May 11, 2013
is there any method to add widget into custom roms.I want to add HTC clock and calendar widget into cyanogen mod 10.1 rom for huawei ascend p1.
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Aug 19, 2012
Getting random notifications on my EvoLTE and I'm trying to figure out what is causing them without reviewing miles of logcat files. Is there an app that will create a log entry to tell you what is causing notifications?
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Apr 11, 2010
I live in the United Kingdom and have been trying to find the town that I live in, but when I do a search for it I find nothing. some help so I can have my town displayed on screen? At the moment I have showing a town which is 15 miles from me.
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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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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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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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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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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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