Android :: Prevent Multiple Instance Of Same Widget Being Added To Homescreen
Jun 4, 2009
I am learning the app widget programming in the 1.5 SDK release. I was playing with the sample widget (wiktionary) and found out that you can actually add multiple instance of the same widget to the home screen, is there a way to prevent this? An attribute in the XML? I am stuck with 3 instance of wikitonary and 2 instances of music player on my emulator now... can't get rid of them... :(Also I am looking into buliding my own app widget container, not a home screen replacement, just a container that can host other widgets, I read the appwidgethost api doc, is there any sample code or guide on how to use the appwidgethost api
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Jun 24, 2010
Is there a way to know if there is an instance of your widget currently on the homescreen? I always end up using variables that change state with onUpdate() and onDeleted() calls, but that obviously that isn't effective in every scenario.
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Nov 5, 2010
I have a widget that contains 4 buttons to show 4 stock prices, each of them will launch into the same activity Quote.class to show stock details. In onUpdate(), it will set up the pendingIntent with extras with stock symbol. After I hit button A, it goes to Quote activity that shows stock A. Then I hit the BACK button to the homescreen, Quote activity calls onDestroy() and when I hit button B, stock B will show properly. However, when i hit HOME button after it shows stock A, the Quote activity only calls onStop without calling onDestroy(), then as i hit button B, it will call onStart() and it shows the same instance that shows stock A.
CODE:............
Originally I thought adding a flag in the Intent should solve this problem. But I have tried
i.setFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK or FLAG_ACTIVITY_NEW_TASK or FLAG_ACTIVITY_NO_HISTORY), none of them makes any difference.
So is there any ways to make it work? How can i remove the history stack from HOME button? How can I call onCreate in Quote activity and get new extras when i hit button B?
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Jul 27, 2010
I've just switched to launcherpro from sense, and the one thing I miss is the news widget. On sense in had three full page widgets devoted to it, and I need a replacement! Requirements are:
Full page widget
Multiple homescreen support
Simple aesthetics
Customisable news feeds
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Jun 24, 2010
Application (non-wanted) behavior - application is started, some text is put into text-box and notification is created through button action. user "clicks" the home button, application is "minimized", notification is available in bar user selects the notification and the application is "maximized"
BUT - instead of the original instance, new instance is started (e.g. in the newest instance is missing the original text; when the latest instance is closed there is still the original instance with original text ) .
The code of the notification method
CODE:.....
I have also in the manifest xml file following tag android:launchMode="singleTask"
But it is still the same...The main problem is double/triple initialization of the application, i know that there are other means to preserve the values in resumed applications. Also it is needed that the applications stays running in background as the main functionality is the streaming of internet radio.
What is missing in the code ? What kind of information from my side is missing for to troubleshoot the issue ?
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Sep 16, 2009
will the device wake up if there is a widget instance on the homepage but the widget provider or receiver is disabled?If I have a widget instance on the home page, but if I were to disable the widget provider from receiving messages by disabling the component, and if I have no components receiving the messages targeted for that widget, will Android still wake up the device?
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Jul 4, 2010
I have few question in application side. Questions are below 1. Can LMK (Low Memory Killer) kill service ? 2. Can I open multiple instance of same applications ? 3. Can I set the priority for the application? 4. LMK kills application(process) or one activity(suppose in application 4 activity). If it can kill activity then how activity stack handling this.
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Oct 19, 2010
I created an Matrix object (like the math Matrix, a 4x4 block of numbers for instance) and it works fine, can set row,col,variable just fine, but, I cant have more than one of the same object, I have it creating an ArrayList of a dozen Matrix objects, each with the three variables, but when I call changeVar(Matrix x,int variable) and refresh the printout of the matrix, it changes all of the numbers to what i changed the variable to. So it looks like its just creating the same instance over and over, and if you change one, it changes them all, am i missing anything obvious?
CODE:........................
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Sep 8, 2010
I've just added my uni and hotmail exchange accounts to my samsung i5700, and for the past half hour since I've done it the phone has been deadly slow. Do three push services (i.e. hotmail, uni + gmail) hog resources? Or is the slowdown just the phone acclimatising to the new accounts?
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Jan 27, 2010
Why when I look at a contact n go to edit, why is there many "google contact" instances all for the same contact. Like it has their name numbers n email then keeps scrolling and has multiple per contact. Why is that and can I do away with them..
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Mar 29, 2010
Sometimes when I add a new person to contacts, multiple duplicate entries get created. I've seen 2 to 3 entries for a new contact, and this has happened roughly 3 times since I got my phone a month or so ago.What's up?
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Oct 1, 2010
If I have a button that starts an activity, and the activity sometimes takes a second or two to throw up its own view, how can I most simply and reliably protect against the button being clicked multiple times and kicking off multiple (identical) activities?
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Dec 29, 2011
I bought a Samsung Galaxy S2 a couple of days ago and since then i've tried to get my e-mail settings sorted out. I have been searching the internet for a long time without finding a solution.
My problem is that i have 4 e-mail accounts and 3 of them i need constantly. My phone can show my e-mails on a nice widget on the homescreen using the default "e-mail" labeled widget3 . However i cant choose which e-mail account i want it to show. Now all i have is 4 times the same nice widget showing me the same e-mail account's 3 newest posts.
I have tried several other e-mail clients but all of them have the same problem. I really like the default client which is bundled on the phone, but it won't do me any good if i cant see all my accounts.
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Jul 19, 2012
I have about 150 apps installed, but only 30 of them are currently on the homescreen.
Is there a way to add the remaining 120 at once to the homescreens?
If I would have to do it manually (Samsung Galaxy Tab 10.1) it would take at least an hour to do (adding one shortcut is extremely slow, as my tab needs about 10 seconds to display the list of apps alone when creating a shortcut).I don't have to do it manually for each app.
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Feb 16, 2010
I added an intent filter to one of my activities, so that when a user clicks a URL like "www.mysite.com", and if my app is installed, my registered activity can be launched. It works well.
I see that this creates a new instance of my registered activity though, every time a link is clicked. Is there any way to prevent multiple instances from being created - just recycle an existing instance if one already exists?
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Jul 6, 2010
I was wondering if it's possible to get the icon (shortcut) of your app on the home screen during installation instead of inside the standard apps folder? And I did find out that Android has AppWidgets but I was wondering if it supports "standard" widgets as well (javascript/html/css) ?
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Jun 20, 2010
how can i make a 4g widget for my hm screen? so i dont have to goto settings/wireless networks etc.
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Jul 1, 2010
I'm trying to create a homescreen Android widget and have it alternate between two different textviews I would send to it. Is this possible?
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Oct 13, 2009
I can't find how to display a list in the app widget. I have created one app-widget which fetches the database table information and I want to display all the icon:text into app-widget. Remoteviews doesn't have any list functionality.
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Nov 10, 2009
I'm writing a appwidget and hope to limit a widget can be added only once on homescreen, and for further trying, i hope to show the correct page of homescreen to show the widget, just like native media player widget.
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Jun 24, 2010
Is there an Event that is fired when an widget becomes visible on to the homescreen. I didn't mean at install time, I mean if the user changes his homescreen by wiping the surface of the phone. The background of this question is that I setup a timer in a service inside the widget that gets updates from a url but that should stop if the widget is not on the current homescreen.
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Aug 10, 2009
Does anyone know how to handle widget's "Long Click" event on home screen? I want to implement: long click one widget on home screen then one menu will be popup.
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Jul 15, 2010
I have a homescreen widget with an imagebutton. I have the button working with a pending intent, but I can't seem to figure out how to change the button image when it is pressed. I tried using a selector and it works in my widget test activity, but not in the remoteview. How could I implement this functionality in the home screen widget?
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Jun 30, 2010
Is there any good alternative for the Astrid tasks app? I just need a widget on my homescreen like Astrid to show tasks. The problem with Astrid is that it has a backup process which keeps running in the background even when I disable backups. (See for yourself, in running processes).
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May 10, 2010
i've got the wifi on/off and the mobile network on/off. either i can't remember how to do this or its different for gps. i've seen pictures off people's phones that have this.
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Jan 29, 2010
I tried out Flyscreen the other day and found its card-based flipping through rss/facebook/twitter/weather to be very fluid and pretty. The trouble is, I don't really want that as my lockscreen (besides which, it doesn't seem to truly lock the screen). Does anyone know of a similar app that creates a widget I can flip through in a similar way on a homescreen?
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May 8, 2010
I have the HTC widget for wi-fi access being turned on and off placed on one of my homescreens. The widget allows wi-fi to be on or off.When clicking the wi-fi widget ON the wi-fi won't come on until I manually go into Setting ->Wireless and Networks->wi-fi network and manually turn on my Wi-fi connection. Now this is not a huge issue but one none the less. Once I connect the wi-fi in this manner it work fantastic at 54mbps. with a good connection. I know the router is working since I use it for my laptops in the house and my in-laws come and use it as well with no issues.
Is this due to the fact that it has WPA password (which is already saved on the phone as the password and doesn't ask for it to access the wi-fi)? Could it be something I am doing wrong. Is there perhaps something I can do to fix this, whether it be a setting or a 3rd party widget to toggle between on and off.
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Jul 28, 2010
I had the big version of the weather widget on my home screen till I accidentally removed it. I think I removed it. It's now blank where it formally was. This is the default weather thing that's on the home page of the phone when it's new. I am assuming I had HTC's Weather widget, but now when I try to re-add it (Plus Sign/Add Widget/Weather) I get an error that says "No room for this widget", "In order to install this widget you need to create space on a page of the Home screen". So I actually cleared everything off of the main home screen and I am still getting that "No room for this widget" error. How I can get the weather back on this page?? I can add the 2 smaller versions but not the one I formerly had.
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Jul 22, 2010
So I had the setCPU widget on my homescreen, and was noticing that when I wake my phone up, the screen comes on but it would take about 4 or 5 seconds for it to respond to any scrolling or touch input. At first I suspected it was my screen off profile being too low (480/245). But I then removed the widget and the problem seems to be solved for the most part. Can someone confirm that this is an issue or is it just a placebo? Oh, running PlainJaneT2 Stock 2.1 with OC and A2SD.
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May 25, 2013
When I installed 3d clock widget not able to add it to the homescreen..
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