I have a widget that launches an activity, but when the activity finishes using the finish() I don't know how my widget can know about it since I can't override onActivityResult() which seems like the only way to listen when an activity closes...?
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In the following scenario, the fields of Activity is not released when the Activity is closed with calling finish().
Class MyClass {
}
If I understand it correctly, bindService() with BIND_AUTO_CREATE will start a service and will not die until all bindings are all unbinded.
But if I bindService(BIND_AUTO_CREATE) at onCreate() and hit back button to close the activity, the service calls onDestroy() and dies also.
I don't call unbind() at anytime. So is that mean when the Activity got destroyed, the binding got destroyed also and the service gets destroyed also?
What if I want the service to be always running, at the same time when the activity starts I want to bind it so that I can access the service?
If I call StartService() and then bindService() at onCreate(), it will restart the service at every launch of Activity. (Which I don't want).
So I could I start service once and then bind next time I launch the activity?
How to check in android when application (not Activity) going to closed?
View 2 Replies View RelatedI wrote an android program that: has a main activity for UI, and it starts a service. The service timely callbacks the UI activity to update views. It works fine except: if the activity is closed (with BACK) and start again, the service will also be started again (The service plays audio file, so there are two overlapped sounds). I use bindService with BIND_AUTO_CREATE flag to start and connect to service. According to the document, it should create service only if it doesn't exist, but obviously it starts another instance when opened second time. All I want is when the activity is closed, the service goes on running, and when the activity opens again, it can reconnect to the service. Is that possible? Or I just misunderstand the usage of service?
View 1 Replies View RelatedI am wondering whether is possible to use a BroadcastReceiver to listen for an Activity being launched. I have no control of the Activity I need to know about as it is from the Android platform.
View 3 Replies View RelatedWhen I exit out of an app the screen is blank for 30 seconds or so before my widgets and icons reappear. I had it back in November 2009 and I still have it after 2.0.1 and 2.1 and 2.2 and the other 2.2. I see a million threads here and on other forums asking about it. Just checking in to see if there was ever a solution discovered. Like all of you, I can always bring them back with a hard or soft reset.
I'm just wondering if anyone has found a way to prevent it from happening in the first place. I assume that it's related to available memory or processor or something, so every once in a while I think "I'm going to streamline this thing and give it all kinds of available memory" and it doesn't work. I kill all widgets and go to vanilla wallpaper and it still happens. Anyone figure this thing out?
I would like to make my activity do something when user clicked the title bar. But I could not find any information about how to manipulate the title bar. Please kindly give me some advices.
View 9 Replies View RelatedI want to know when Android's contact launch activity is opened because my application opens after a call is finished and then the contact launch activity is opened after it meaning it will cover my app's activity leading to that I have to press "back" button to see my app. That is, I want to open my app after contact launch activity has been opened.
View 1 Replies View RelatedIn current activity, when user click the back key, I don't what it back to the last activity. Can I add a listener to listen to back key in current activity? When user click "back" key, it actually back to the activity I want it to go.
View 4 Replies View RelatedI hav an app that is like a relational database. There is a main app activity that users manage things with. There is also a widget that will display important info and add data to the database. When the widget is clicked, a configure class displays a way for the user to edit data. When the configure activity is done, the widget is updated and instead of going back to the home screen, the apps main activity is started. I can't find where the main activity is being called from. Wouldn't I have to create an intent and start Activity() to get this behavior? When done updating, I want the home screen and not my app.
View 3 Replies View RelatedMy activity have to use List and Tab widget, one is left side,the other is right side, I means layout, but use List must to extends ListActivity, and use Tab widget must to extends TabActivity?
View 7 Replies View RelatedI've read through the Application Fundamentals three times today (and I had done so before), but I still can't quite wrap my ahead around the task concept. Or I guess I thought I understood it, but usually, the results I am seeing don't match up to what I would expect to happen (maybe a tool to see the current tasks/activities etc. for debugging purposes would be a nice addition).
I have multiple widgets from my provider in the Launcher desktop, and each is using a PendingIntent with a different URI as data (so they should be separate intents) to open an Activity.
I want there to be only once concurrent instance of this Activity that the user can access. So clicking the widget (1) , pressing HOME (2), clicking a different widget (3), pressing BACK (4) should bring the user back to the Desktop.
Now I did manage to do this using launchMode="singleTask" - the existing instance is brought to the top, onNewIntent() is called and I am pretty satisfied with it.
However, supposedly there are other ways to achieve an equivalent effect (say with having the activity restarted), and I'd like to understand why I don't seem to be able to get them to work: In every case, instead of seeing the home screen after step (4) (after pressing BACK), I see the *previous* instance of the Activity.
For example, if I read this correctly:
"There's another way to force activities to be removed from the stack. If an Intent object includes the FLAG_ACTIVITY_CLEAR_TOP flag, and the target task already has an instance of the type of activity that should handle the intent in its stack, all activities above that instance are cleared away so that it stands at the top of the stack and can respond to the intent. If the launch mode of the designated activity is "standard", it too will be removed from the stack, and a new instance will be launched to handle the incoming intent." http://developer.android.com/guide/topics/fundamentals.html
Then simply using using the following code to start my Activity from my widget should do what I want, no?
CODE:............
So in (3) My activity should be launched using FLAG_ACTIVITY_NEW_TASK by the launcher, which due to process affinity would find the existing task (which would consist of a single instance of my Activity), and launch the new instance on top of it. This explains what I am seeing. Why doesn't FLAG_ACTIVITY_CLEAR_TOP cause the existing instance in the task to be replaced?
Even setting android:launchMode explicitely to "standard", as mentioned in the doc quote above, this doesn't seem to change things.
I also tried android:finishOnTaskLaunch="true", but the behaviour is the exact same was just described with FLAG_ACTIVITY_CLEAR_TOP (which seems to be the exact same as when doing neither and really starting an activity without any special attributes).
I should mention that If I click the same widget in (3) as I clicked in (1), i.e. using the same PendingIntent twice, I do get the previous instance brought to the front (not restarted), but again, regardless of whether FLAG_ACTIVITY_CLEAR_TOP or finishOnTaskLaunch are being used.
I find this especially strange since the docs about tasks don't seem to mention the intent itself being relevant at all. Application Fundamentals does at one point say "For the default "standard" mode, a new instance is created to respond to every new intent", but it's not clear what "new intent" means then. Is triggering a PendingIntent multiple times through a widget not multiple "new" intents then?
I also tried various combinations of the other related options, but pretty much got nowhere.
I have been looking for a way to update a widget asynchronously, for example, when the phone receives a text message. I have a broadcast receiver set up with code that runs upon receiving a message. I also have an AppWidgetProvider that is set up and running. It seems like the *only* way a widget can be updated is upon its interval, or when the user interacts with it. Is there any way to update a widget upon a system event?
View 6 Replies View RelatedI have a widget, its setup so that when I click on it, it opens some settings in an activity.
CODE:................
This configures some settings for the application. What I want to achieve is to have the widget update its view to reflect the changed settings when the Activity I launch closes. Using the update interval or any other type of polling isn't appropriate for this.
I've seen a couple places here and in the android docs this code used:
CODE:...................
But I don't know how to get the mAppWidgetId value. I tried following the example for a widget configuration activity here http://developer.android.com/guide/topics/appwidgets/index.html, but in the following code,
CODE:............
Extras is always null, so I never get the AppWidgetID.
I have added a widget and instead of updating it every xxx minutes, i want to update it only if in my activity something is changed. But how can i call the onUpdate Routine of my widget from my activity?
View 3 Replies View RelatedI want to embed the analog clock in my application.
I use <AnalogClock android:layout_width="wrap_content" :layout_height="wrap_content" /> in my layout XML file, but the clock's appearance is different from the one added in Home screen. I know I can copy the AlarmClock's images to my project. And in xml file, set the android:dial, android:hand_hour,and android:hand_minute to my project's images. But I want to know is there a way to directly reference the resource in the AnalogClock?
second question, Can I add the app widget from code? I tried use following code to add a appwidget, but it seems the getAppWidgetIds don't work?
CODE:...................
I've made an application for network monitoring "Myapp" under com.domain.monitor package and which contains a Prefs-activity . After that , I made a widget to let the admin keep an eye on hosts status "the information is presented as a graph in the widget" , also the widget has it's own package different of the Myapp's one & has a unique Prefs button ! (complicated Crying or Very sad , I know)
The Problem : Is there any way To run Myapp and show the prefs- acitvity by clicking on the widget's buttton !
I know it's possible, but I can't figure out a way to trigger an update of my widget from the main activity. Isn't there some general intent I can broadcast?
View 1 Replies View RelatedI am working my way through oh my first widget (so this is 1.5, obviously) and I'm stuck. I've poked around a problem involving the launch of an Activity when clicking on a widget. Scenario: User drags widget on home screen without prior launch of the Activity in question. I am following this post: http://android-developers.blogspot.com/2009/04/introducing-home-scree... Instead of launching the browser through ACTION_VIEW, I am trying to launch an Activity by class. I've toyed around with different Intent settings, but no luck.
View 7 Replies View RelatedI have written a widget that cycles through a series of movie poster images with next/prev buttons.This works.There is another button on the widget that needs to launch an external activity, sending it the name of the shown movie.The other activity is not in the same namespace, package or eclipse project as the widget.It is written by another developer and its apk is installed on my emulator.
View 7 Replies View RelatedSuppose I have ActivityA and ActivityB, also suppose that ActivityA is active. I need to:
Programmatically set a text of EditText in ActivityB from ActivityA
Launch ActivityB
Here's my code:.............
ActivityB starts, but without any text in txtResult.
On my widget I'm having a button and a textView. When clicking that button some data is registered and I want the TextView to be updated. However I can't get to the TextView instance from within my Activity it seems.
View 4 Replies View RelatedI have a widget with a configuration activity.
Currently the configuration launches when you click on the widget.
I want to add the configuration as an app icon to the launcher.
The problem is that when the configuration launches on click, I get a specific widget id , so each widget instance can have a different configuration.
What will happen if I start the activity from the launcher?
I wont be able to show multiple configurations on the same activity.
I was wondering if there is a way to show a widget that I have created inside an activity. I have a weather widget and I also have an app I am working on that I would like to include weather reports in. Is there a way I can just re-use the widget code and make it show inside the weather activity?
View 4 Replies View RelatedI have made a Android Widget which displays two articles (title + image). In addition to this, I have buttons for flipping backward and forward through the articles. What I don't understand is how I can change the Widgets RemoteViews when the buttons are pressed. Which should be one of the most basic operations in a widget, however, I can't seem to figure it out.
So... Can I do this with just a OnClickListener in the AppWidgetProvider? Or do I have to create an Activity without a window (visibility = false)?
I'm having an issue with a config activity for a widget. According to the dev docs, if I specify a configuration activity than the onUpdate method of the AppWidgetProvider doesn't get called until after you request an update once you've completed the configuration activity. For me its happening in reverse, the onUpdate method of the AppWidgetProvider gets called first, followed by the configuration activity. Then the onUpdate method is never called after completion of the config activity even though I request it explicitly. I tried with level 4 and level 7 API, same result. Here is some of the source:
Manifest:
<?xml version="1.0" encoding="utf-8"?> <manifest
xmlns:android="http://schemas.android.com/apk/res/android"
package="com.chris.android.swidget"
android:versionCode="1" android:versionName="1.0">
<application android:icon="@drawable/app_icon" android:label="@string/app_name">
<activity android:name=".SWidgetConfigure">
<intent-filter> <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
</intent-filter> </activity>
<receiver android:name=".SWidgetProvider" android:label="@string/ widget_name">
<meta-data android:name="android.appwidget.provider" android:resource="@xml/swidget_info"/> <intent-filter> <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter> </receiver>
<service android:name=".service.PUpdateService" />
</application> <uses-sdk android:minSdkVersion="4" />
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
swidget_info.xml: <?xml version="1.0" encoding="utf-8"?> <appwidget-provider
xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="294dp" android:minHeight="72dp"
android:updatePeriodMillis="86400000"
android:initialLayout="@layout/swidget_layout"
android:configure="com.chris.android.swidget.SWidgetConfigure" >
</appwidget-provider>
I can include source of the onUpdate method from the AppWidgetProvider activity and the onCreate method of the configuration activity if necessary, but they are both being called find its just the order they show up on the emulator is wrong.
I m creating my own widget widget initial layout contains one button.when i click on that widget button it shud launch the specified activity using service everything is working fine..but the problem comes when there are 2 or more widget on home screen when i clicking on any one of them i m not able to specify with widget is launching the activity.
View 6 Replies View Relatedin HTC Sense, we can choose widgets of different size after tapping a single entry in the widget list. Is this also possible in pure Android Framework? I have tried to modify the widget's size in the configure Activity, but failed.
View 2 Replies View RelatedI'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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