Android :: Update Existing Preference-item In A PreferenceActivity Upon Returning From A Sub PreferenceScreen
Apr 12, 2010
I have a PreferenceActivity with a bunch of (Sub)PreferenceScreens. Each such (Sub)PreferenceScreen represents an account and has the account-username as its title.
CODE:................
As the user enters sub-PreferenceScreen, and edits the account user-name, I want the outer PreferenceScreen to update it's PreferenceScreen-title for the account in question.
I've tried to add...
CODE:.............
But the accScreen.setTitle does not seem to take effect on the outer PreferenceScreen. I've note that calling onContentChanged(); actually makes it work, but I realize that this is probably not the preferred way of doing it.
I suspect I should call postInvalidate() on some view somewhere, but I really can't figure out on what view and when to do it.
http://stackoverflow.com/questions/2396153/preferencescreen-androidsummary-update may be experiening the same problem as me.
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Jan 27, 2010
I am testing my application on a Nexus One and i have some problems. My theme is Light and when an inner sub PreferenceScreen is displayed, the window background becomes black instead of keeping the PreferenceActivity's one.
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Dec 31, 2009
Do you know how to rename existing menu? I can rename when press menu item. But I don't know how to access to menu item when press the button.
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Sep 13, 2010
I am having two activities, say activity A and B. Activity A is an ListActivity, and when the items in the list is selected, it will call startActivity() to bring up B. The problem here is that when I am in B and click the home key, and then go to the application launcher to resume my application, A will be brought up again. This time when I click a different item in A, it will bring up B with the old data of the previously selected item before the home key was clicked.
After examinzing the code, I found that the startActivity does not update the intent of B. I found a post here about the similar question, and the answer was to overwrite the onNewIntent. However, I found that it doesn't work, because this method never get called when the second time I call startActivity. I am sure that this is the same instance, because I've printed out the instance number. Is there any other ways to update the intent of the activity? Or I need some other settings to make the onNewIntent get called? I didn't set any flags or launch modes, so everything is default.
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Apr 13, 2010
I will try to explain a simple app scenario: My app goes right to a 'main view'. In this main view I have inserted a 'TextView' which displays current settings created by way of the PreferenceManager. For simplicities sake, let's say I have a checkbox in my settings. When I first start my app - the TextView on my main view shows my checkbox setting correctly (true). Now I go to the settings menu, it pops-up, and then I change it to false. I go back to the main view and...no change. It still say's true even after I changed it to false. If I end the app and then re-start it - all is well and it shows my change.
Apparently the main view just stays in the background while I'm changing settings? How can I redraw or update the main view after I change settings?
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Jan 23, 2010
Prolly a dumb question but I can't figure out how to update an existing contact using the call history. In the call history window I can press and hold on a call. This brings up the "save to contacts" option. Not sure what to do after that.
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Feb 9, 2010
I don't know what to do. I have tried clearing the cache of the market, and the apps that are affected with updating. I can't use a backup utility, because well, if I try to restore anytime recently, the same issue exists. I am completely confused as to what made this happen and how to fix it. I would rather not wipe the phone to factory defaults.
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Sep 16, 2010
I have a list (ListView) which displays news items. They contain a image, title and some text. The image is loaded in a separate thread (with a queue and all) and when the image is downloaded, I now call notifyDataSetChanged() on the list adapter to update the image. This works, but getView() is getting called way to often now, since notifyDataSetChanged() calls getView() for all visible items. I want to update just the single item in the list. How would I do this?Problems I have with my current approch is that the list is slow and I have a fadein animation on the image which happens every time a single new image in the list is loaded.
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Aug 28, 2010
I have list of items ion my activity which I load dynamically, item after item. Initially I load "lightweight" version and when processing is done I want to update the item with new information. Like set some text or replace an image. That means I need to update what ListView item is displaying after Adapter#getView already returns. Of course I don't know if user is actively scrolling and this item is still visible or has been scrolled out ot view. The only thing I can think of is to extend View so it performs some operations on it's own thread and updates itself when done,but will it work?
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Jan 19, 2010
How do I update individual row in listview?
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Dec 2, 2010
1. How to update a number from the call list to an existing contact?
2. Anyone has experience cut-off during a conversation? Why?
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Nov 18, 2010
i have an android app, with a actitity, that shows a map, with a position. This possition is updated on sharedPreferences with a service... ok, that works fine. I need that my activity implements runnable to be a thread that read's the position of sharedPreferences each 1000ms and then update the item position on the map... but it doesn't works. As i saw in debug mode, my thread doesn't work fine, ONLY ENTER ONE TIME on RUN() method... i mean that never enters into RUN() method again, only one time, cause this, the positions doesn't be updated on the map. What is wrong? why this thread doesn't work fine?
public class Locate extends MapActivity{
private TextView userText = null;
private TextView permissionText = null;
private TextView lastUpdateText = null;
private Button locateButton = null;.............
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Feb 14, 2010
Its me again. I tried the last hours, how to change content of a spinner. ok, lets start from the beginning.
I have three spinners. They all have initial values. The first spinner is the main spinner and the other two spinners depend on the vale chosen in the first one. So i want to update the last two spinners after making a selection in spinner one. *edit: All spinners are on the same activity.
How can i achieve this? My problem is that i can only make changes in the spinners onitemselectadapter but thats a whole new class. I cannot reach the activity where my other spinners are.
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Apr 10, 2010
So I am modifying the Cube live wallpaper example. I have a class that extends PreferenceActivity, and I added the Activity in my manifest file. I keep getting ActivityNotFoundExceptions.
Here is my preference classcode...
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Apr 3, 2009
I'm using a PreferenceActivity with a PreferenceScreen defined in a xml file. i want to make sure that the data set on a preference editor are valid (integer , integer in a range....)
So , i want to be able to intercept a click on a button of the EditTextPreference , check the validity of the data and if the data is incorect , display a message to the user and come back on the EditTextPreference.
What would be the best way to achieve that?
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Dec 12, 2009
I have a ListView that has some minor visual preferences that are set in a PreferenceScreen. These preferences are simple booleans to show or not to show some specific TextViews on each item in my ListView.
Anyhow, when these preferences are changed, I need to notify my ArrayAdapter that the data has changed in order to get the list redrawn. However, doing this via an OnSharedPreferenceChangeListener wouldn't really be optimal because there are several preferences that you can change, that would cause an unnecessary amount of updates to the ArrayAdapter.
So, to the question: How can I identify when my ListActivity has occurred on the screen after closing my PreferenceActivity, which I then could use to check for changes in the preferences, and only then notify the ArrayAdapter.
The ArrayAdapter being an inner class of my ListActivity, which is set as a ListAdapter.
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Jul 19, 2010
Jeff Sharkey in this post (http://goo.gl/G3wt) shows how to create save application preferences in database by hack on PreferenceActivity.
It said i can use a ContentProvider, too.
Can you give me an example on how to save preferences from PreferenceActivity to ContentProvider?
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Jun 12, 2009
I have a PreferenceActivity building screen hierarchy from code, and I need to force display hierarchy change dynamically when one of SharedPreference value changed. I know this might be a kind of easy question, but I couldn't find answer anywhere in documentations or discussion.
My PreferenceActivity is forming like this. code...
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Mar 16, 2010
I am having a problem with an application I am in the middle of writing which is causing me some serious headaches.
The situation is this:
The application allows the user to configure several different kinds of information in several activities.
One of the activities, which is a subclass of Activity, takes data from the user and stores it in a shared preferences instance that I create manually and edit in code. This activity requires a complex screen layout that I do not believe would work well with a PreferenceActivity, hence me rolling my own in this case.
Another one of the activities, which is a subclass of PreferenceActivity, is a straight forward list of preferences, each with a list options - standard stuff.
I am finding that any data that I store from the first activity, my bespoke preference screen which manually adds the data using a StoredPreferences.Editor instance is overwritten once the user selects an option in my activity that extends PreferenceActivity.
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Aug 5, 2010
Currently, I'm using the following code across all of my activities in my app to store application level variables and carry values between activities..
prefs = this.getSharedPreferences("MyPrefs", Context.MODE_PRIVATE);
I didn't have a PreferenceActivity prior to this, but now I do and I am looking to store a few user prefs from this new PreferenceActivity in the same sharedPreferences tag, "MyPrefs".
I know I can access the PreferenceActivity SharedPrefs from my activities via
prefs = PreferenceManager.getDefaultSharedPreferences(this);
but I would like those values saved to my current sharedPreferences tag, "MyPrefs", but I'm not sure how to do this.
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Apr 9, 2010
I don't know exactly how to explain this problem, but I'll try. I have a ListView with several items. Each item has inside a TextView and two ImageView. I want the ImageView change when I click on them, and I want to open a context menu when I press for a long time into the ListView item.For the ImageView, everything works properly. For the whole item, I can show the context menu after a long press, but my problem is that the ImageView changes as well when I am pressing the TextView, for example.I hope you understand my problem. I think that all the children of a view are affected by an event in the parent, but I am not sure.
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Nov 20, 2010
I jave a list of item (linearlayout inside a scrollview where i add buttons vertically to linearlayout dynamically from the java code)i need when i click on one button the item moves up (scroll up) , to make the item at the first of the screen
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May 25, 2010
I need to get an item's position in spinner knowing it's ID. I've tried to do it with Spinner and SpinnerAdapter classes but there are no corresponding methods there.
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Dec 24, 2012
I am working on developing an app and I am not sure when should I use a new activity and when should I update the existing view.
For example, lets say I have a view that shows a multiple choice question.Now, when the user selects his choices and clicks on say "Evaluate", I want to show the same question view but along with the right answers and explanations for each option. So does that mean, I should send an Intent upon a click on Evaluate or I should just update the view (i am not sure how)?
If I send an intent and show a new screen, how can the user go back to the next question without displaying the answers? If I don't create an new activity, how can I update the existing view that is already displayed?
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Sep 9, 2012
is there a way to change the main activity background using preferences?I search everywhere and tried everything i could imagine but nothing works.
I want to enter in my preferenceActivity, choose "change background", open the phone's gallery, select a image/photo and set it as the "wallpaper" of my application.
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Mar 4, 2009
Is there a certain way for me to know when a PreferenceScreen is closed?
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Jul 27, 2010
Is it possible to set a background image on a PreferenceScreen? I have tried the tag android: background= "@ drawable/some_background" which can be set in for example a LinearLayout XML, but it doesn't work in the PreferenceScreen.
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Dec 29, 2009
I want my preference menu to have something to change the duration of a vibration.There is not an slider tag for prefs.xml, so which is the best way to do this?
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Jan 29, 2010
My application has a setting menu which is actually a PreferenceActivity.When it's created, if a boolean value is not set I want to go to the DialogPreference which sets that.How should I do this? It's ok to add that DialogPreference to the manifest?
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Apr 23, 2010
Is there any way to add a button to the bottom of preferences screen and make them work correct when scrolling?
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