Android :: Update An Apk Over Air Programatically?
Jan 20, 2010
I have an application I wrote for Android (lat's call it MyMainApp).
My contractor wants me to write another utility (service) to periodically check his website for newer versions of MyMainApp, and if there is one - download it and install.
I know this is handled by the Market app, but my contractor wants to do it in his own utility (he does not want the user to be bothered with the update process).
Of course - the user will be notified and agree to this feature. Can this be done?
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Aug 28, 2010
It seems like every example I can find of switching between Activity's involves creating an Intent and passing in the context of a View via an OnClickListener associated with a button.But what if you just decide you need to switch Activity's? In my case, a Preference value is causing an Activity switch. How do you create an Intent that can cause an Activity switch without an associated OnClickListener?
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Apr 19, 2010
Is it possible to clear a notification programatically?I tried it with the NotificationManager but its not working.Is there any other way i can do it?
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Jan 8, 2010
I have a little problem with a ScrollView.I have a layout for an activity which is made with a ScrollView. This scrollview contains two ListViews.<?xml version="1.0" encoding="utf-8"?>
<ListView android:id="@+id/accountsListView"
android:layout_width="fill_parent"
android:layout_height="wrap_content" android:scrollbars="none" />
<ListView android:id="@+id/cardsListView"
android:layout_width="fill_parent"
android:layout_height="wrap_content" android:scrollbars="none" />
</LinearLayout>In onCreate method of my activity I compute ListViews height according there contents.During execution, on activity launch, ScrollView is already scrolled a bit.So I tried, at the end of onCreate to call method scrollTo(0, 0), but it does not change anything.
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Jul 10, 2009
I have To set Wall Paper In application by writing the code programmatically. when i press the Grid view Image will get full screen ..... that image i should keep as a wall paper in the android mobile screen how can i do that in programatically. I have done some thing like this ....is it correct or any other way to do it.
CODE:...............
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Dec 14, 2009
I want do set size (in px) of dialog based on screen resolution, so I have to set dialog size programatically during runtime.
Dialog layout is defined in xml with all standard views, so it would be nice to have better way to set dialog size than override-in top view's onMeasure(...).
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Jul 24, 2009
Are the following actions possible using the latest version of the Android API?:
Temporarily disable sending text messages
Temporarily disable receiving text messages
*Ideally, I would intercept them and queue them up for later delivery.
Temporarily disable incoming calls except from certain phone numbers
Temporarily disable outgoing calls except to certain phone numbers
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Apr 6, 2010
How do we set the input type for an EditText programatically? I'm trying:
mEdit.setInputType(InputType.TYPE_TEXT_VARIATION_PASSWORD);
it doesn't seem to have any effect.
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Jun 29, 2010
Is it possible to remove an application programatically? If so, shall I look at the package manager for that or is there an example some place? When a package is installed, I believe there is a broadcast message to the system saying that. Is it possible to capture that broadcast message?
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Sep 4, 2010
I have a FrameView that's created in my XML layout, and in my code, I'm trying to create a series of new ImageViews and add them as children of this FrameView. The ImageViews are small, only about 15 pixels square, and I want them to show up in various positions around the FrameView (I'm trying to implement what looks like a radar screen). I'm able to create them and add them just fine, and they show up on the screen.
However, when I try to set their margins, it doesn't seem to have any effect. No matter what I set, all the ImageViews show up in the top left corner of the FrameView, as opposed to offset by the appropriate margins. My XML layout is listed below, along with the code that generates the child views. Am I doing something wrong? How can I get the margins to show up properly? Or is there a better way to do this than by using margins.
XML:
CODE:....................
Java:
CODE:...............................
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Feb 13, 2010
I'm writing a simple caesar-encryption-activity. Two EditTexts on screen, one clear-text, one crypted.
Here's an example for the crypted EditText - the cleartext one is similar.
CODE:...................
Now when entering cleartext I have an TextChangedListener running that programatically crypts and fills that crypto-EditText. So far, so good.
When the cleartext entered gets really long, the cleartext-EditText scrolls with my imput, but the crypto-EditText stays at the top of the text. I'd really like the crypto-EditText to scroll so that it always shows the bottom line of its content.
How can that be done, preferably from the onTextChanged()-Method of the TextWatcher?
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May 31, 2010
How can we programatically push our app to run in background? I am doing one browser app. and when I am directly launching my application and clicking back key . It will show in the list of background running process.At this time Category is "CATEGORY_LAUNCHER" but at the same time if we try to run same app via third party app.and then clicking back key,its not showing in the list of background running process.Here the Category is "CATEGORY_BROWSABLE".and its not displaying in the list of running process.I noticed that the same behaviour in default android browser. But is their any way to make my app to run in background by clicking back key without killing my application?
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Aug 6, 2009
In menu.xml you can specify an icon:
CODE:.................
Whereas in code you create entries thus:
CODE:........
How in the code version do you specify the icon please?
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Sep 29, 2010
I know you need root access if you want to capture a screenshot by using a background application. However is it possible to just grab the screen content of your current visible activity owned by your process? This does not seem like a security constraint since the user has already installed your app is currently using your app. If so how does this work?
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Oct 7, 2009
I'm trying to create a TableLayout programatically. It just won't work. The same layout in an xml file works though. Tcode...
When I run this, I don't get a crash, but nothing appears. If I get rid of the TableRow instance, at least the button does appear as a direct child of the TableLayout. What am I doing wrong?
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Nov 19, 2010
I am trying to add permissions to my application manifest, so it can access other apps that the user installs at runtime. I thought the way to do this was to define a permission-tree in the manifest, and then use PackageManager.addPermission() to add permissions under that tree. However, I can't get this to work and the documentation I found wasn't conclusive. Could anybody show me how to do this by means of a simple example?
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Mar 1, 2010
I want to change SMS ringtone programatically from a raw resource but I don't find any example to do it.
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Apr 21, 2009
We are writing an app to substitute screen/pattern lock on G1. Unfortunately, it is impossible to substitute the original screen lock app with a 3rd party one. The only option left is if we can UNLOCK the phone from a service running in the background when G1 is locked. Is it possible? Is there interface to Pattern/Screen lock? What is KeyguardManager for?
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Apr 23, 2009
How can I programatically launch Browser in my android application? And how can I do that with it opens an URL instead of home page?
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Mar 3, 2010
I am trying to do a little app to list and connect to other Network operator.I list them by going to:
Settings
Wireless Controls
Mobile networks
Network operators
Search networks
And I connect to other Network operator by clicking on one of the list.I've been searching methods from ConnectivityManager but I don't find something like connectTo() .Any ideas of how I can do this?
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Jan 25, 2010
Actually I am new to android. I want to create a .txt file programatically, save data to it and then retrieve the data. I had write one application for that but when I run it it creates file under data/data/ <myPackage Name>/files folder , I can see only size of this file but I can't open it. but when I deploy the application on mobile then there is no any file created. If i supplied path like FileOutputStream fOut = openFileOutput ("/sdcard/ deore.txt",Context.MODE_WORLD_WRITEABLE); then it throws Exception. So, please tell me where the actual file is saved under the phone and how to open it.
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Oct 17, 2010
I want to check if GPS is enabled, but I dont know how to do it. i mean with a function, in android
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Sep 17, 2010
I want to programatically refresh Gallery every time I download a video from my application. It doesn't automatically show up in the gallery.
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Oct 28, 2010
I am trying to programatically define my program layout and add a button to it at a certain position. I am not using the layout xml as the content view.I have then added a button that I want to apply the properties
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Sep 23, 2010
Is it possible to programatically determine the value of the call timer as displayed by the phone dialer in real-time during a call (the call duration is available via the call log but this value does not appear to be updated until after the call ends).
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May 13, 2009
How to get a notification on dead of my application.Android is killing my app after every 40 mins. Is there any way to restart the App programatically again?
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May 11, 2009
I'm working on some data transmission program and current it works alright on WIFI connection.
However, I understand that if I am in an environment where there are both 3G and WIFI coverage... the phone will (by default) be turned onto the WIFI network connection.
However, if for some reasons, I wish to be connected directly to 3G (e.g. 3G is more stable in public WIFI area).... is it possible to do so programatically on the Android phone? If i'm not wrong, it's possible using the ConnectionManager API, am I right?
May i ask if anyone has done something like that and don't mind sharing the code snippets to do so , or point me to the right direction for this?
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Oct 28, 2010
I have checked setId() method of the view, it accepts integer parameter. But there are possibilities of assigning same id to different views, which may create problem for me while i do findViewbyId().
My question is "How to set unique id to the view programatically?"
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Aug 26, 2010
I've been experimenting with the Android SDK over the past few days, in readiness to write an App for the store, however I've run across a bit of a problem.
The App I'll be writing requires that the user has a Google account associated with the phone. Retreiving and making use of the Auth token etc was not a problem, however I would like to be able to show the activity that a user would normal reach by going through the menus Settings->Accounts->Add Account.
Now through experimentation I've been able to launch this activity from the shell using the following command. am start -n com.google.android.gsf/.login.AccountIntroActivity
I'm having trouble performing the same action in JAVA using the Intent class.
Would anyone be able to tell me firstly whether or not this can be done via JAVA, and secondly how I could go about it please?
If I have to settle for the Sync Settings screen then I will (this can be achieved through the Settings.ACTION_SYNC_SETTINGS intent), however it'd be quite nice to be able to direct the user straight to the required screen.
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Aug 28, 2010
I have subclassed ExpandableListActivity to create an activity that presents a simple tree view of the 'world at large' and allows the user to select one for further use by the app. I am having trouble setting focus programatically. One thing that baffles me is that I can use the D-pad to set focus on any of the child or group items in my ExpandableListView, but inside my onChildClick() callback, isFocusable() returns false. If I can set focus with the D-pad, how can isFocusable() return false?
My goal is to avoid having the user have to touch individual ExpandableListView entries to select them and to provide a couple of buttons to move the focus up and down inside the list. I want selection to be easy for folks with no D-pad or with a phone that only presents the D-pad when in landscape mode (e.g. Droid) .
Is there some way I can programatically inject D-pad key clicks into my app input event stream?
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