I have a Tabview with 3 tabs (each having their own activity). I have a tab that parses a RSS feed. How can I refresh this feed via a menu button? I tried doing the following but I lose the tabs above of course.
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I have an activity that starts a long-running service which in turn adds an icon to the status bar. When the activity gets invisible, e.g. by pressing the Home button, and the pressing the icon in the status bar a new activity is created instead of showing the already created activity. If you now press the back button the new activity is destroyed and the activity created in the first place gets visible. How do I make the invisible activity brought to front when pressing the icon in the status bar instead of creating a new activity?
View 1 Replies View RelatedI am writing an Android app, part of which will be a survey involving multiple pages of checkbox question and answers. I have created an activity to display the question and options (from the DB) and what I want to do now is when i press the "Next" button it should just reload the current activity with the next question set from the database. (the activity starts with survey.getNextQuestion() - so its just a case of refreshing the activity so it updates)
View 2 Replies View RelatedIs it a good practice to reload an activity in Android?
What would be the best way to do it? this.finish and then this.startActivity with the activity intent?
Is there a way to check and see if an Activity exists on your device? If I have a youtube video link I want to specify it open in the YouTube PlayerActivity. However, I don't want to crash if for some reason they don't have it.
Is there a way to check and see if the activity exists? I don't think I can catch the runtime exception since startActivity() doesn't throw it.
I have one activity. OnCreate the activity gets the source (html) of a web page to a string and presents the result (after parsing it a bit) in a textview. I would like the activity to reload/refresh periodically to always present the latest information.
View 1 Replies View RelatedI have an application, where I need to change the language through a settings menu. Now this part works perfectly, but it doesn't change the language for activities that have gone through onCreate.
I got a TabHost, and 2 tabs in it, from the tabs you can get to settings.
Refreshing the TabHost isn't an issue, as it's fairly small, however both the 2 tabs are quite large views, and having a function to manually update all the strings seem unnecessarily difficult. Is there any way to force the activity to recreate itself and trigger a new onCreate?
I tried having a static function in the tabhost that clears all tabs and recreates them, this refreshes the tab titles, but not the content in the tabs.
I have a language setting in my application. When the language is switched, I would like all the textviews etc to change language immediately. Currently I just change the locale in the configuration, so the language has changed when the user restarts the activity.
Solution to my problem would be to make each textview load the new resources each time the language is changed. Is there a better solution? Perhaps a neat way to discretely restart the activity? Or maybe just force reload of the resources?
See title for explanation.
Here is the method I'm using:
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And here is the call to the method:
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Why it would be throwing the "No Column Found with name=Test", although my DB explorer shows there is indeed a column named name and a value in a row named Test?
I had found a lot of stackoverflow post about save an Activity and the reload it.
My question: How can I have an Activity with an MapView and after reload the same mapview?
What is the best way to switch between activity and views?
I'm running into some issues here with my app. I have 4 tabs run through a tabActivity. One tab sends an intent and run my ListActivity that populates the screen from a simpleCursorAdapter. My problem is that when I change back to this tab, after the first time its run, the list never refreshes regardless of the changes made to the database via other tabs. Is there something I can call from onTabChanged to refresh my ListActivity?
View 3 Replies View RelatedI am using six tabs in tab view. In portrait mode tab size become very small .So i want to scroll the tabs in horizontal so that size of each tab will remain original . How we can do this?
View 1 Replies View RelatedI would like to check whether there is any direct API available to check whether a particular Database exists or not ?
Currently, to initialize data for the first time (not repeatedly), we try of open the db and if it fails we know the database does not exists otherwise it is already created and initialized.
Is there any simple API available to check whether DB exists or not ?
I couldn't find Calendar application in the emulator, is there any plug-in to have all the applications enabled in emulator?
If Calendar app exists, what is the service API for Calendar application supported by android.
I have created a database for my android app which contains static data and does not require update/delete functionality thus when the app starts, I want to check if the db exists and if not then execute my dbAdapter class. I know its a simple if statement but I was just wondering the most efficient way to query whether the db exists.
View 2 Replies View RelatedI'm trying to display several Images dynamically. After retrieving a url from xml parsing, I convert it to a Bitmap and loaded in image view using setImageBitmap in AsyncTask ,but current url image does not loaded but next url images loaded,whenever call next url,so i want to refresh or reload imageview in AsyncTask?.
View 1 Replies View RelatedI was getting this cheapo tablet ready to sell and wanted to reset it to factory settings but there was not an option to do that in its settings so I found "format internal" and without even thinking selected that. Well needles to say I can no longer start it up. This tablet has no model number on it, not even in the instructions.
Nexus 7 using Android Central Forums
I'm trying to open a file in android like this:
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But in case the file does not exists a file not found exception is thrown . I'd like to know how could I test if the file exists before attempting to open it.
How can I test if there's a ContentProvider for a Uri ?
I'm currently doing a query on it and checking for a null cursor, but that generates an error in the system log each time, which I don't like to do.
I used AlarmManager to set the pending intent.
I need to find out the state of the pending intent, in other word, is this pending intent working or not. Boz i may need to cancel this pending intent, but before canceling it i want to make sure it's active.
But i see no function in AlarmManager can read this status.
I am struggling to find a way to determine if a valid network is available to an app. specifically, if there's a problem making a network connection, i would like to be determine if it's on the client (app) side, or a problem with the remote server. i happen to be attempting a URL connection (using http client) and the wide and varied possible exceptions don't seem like a reliable method. for example, when the network is down on the phone, i received "unknown host exception", which doesn't really indicate the root cause ... it's possible to get that exception with a valid network connection also. at other times i get other exceptions, such as socket exception. is there a way to ask the phone if it's network ready? the other option i thought was to ping a known good server to see if it responds ... with an IP address. kind of a heavy weight option and not foolproof.
View 2 Replies View RelatedNeed some information on Gestures. How does android treat Operations like Fling which are at device level? Are they treated as Gestures? I am not able to see any gesture listner code in Launcher (Home screen ) application. If i want to change ( add/remove/modify ) the behaviour of Fling operations where i should start looking in the android code base?
View 2 Replies View RelatedI am a big fan of Head First Series. so is there any Head First Android Book exists?
View 4 Replies View RelatedI am looking to the fastest and the correct way to check if a record exists in the database:
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I have already created this project, but I wanted to start over. deleted the HelloAndroid folder from my workspace folder restarted Eclipse now I can't create a project with the same name, because Finish is greyed out, and it gives me the following message: A project with that name already exists in the workspace eclipse
How can I completely delete my old HellowAndroid project from Eclipse?
I have a program with two layouts: - layout/main.xml - layout-land/main.xml
Also, i have some images en drawable and drawable-land...
My problem is: When i change the orientation of the emulator (for examplo: portrait to landscape) i don't know how reload the main.xml layout to update the screen with the new positions....
If I launch the emulator in portrait the application load the portrait layout, and if I launch the emulator in landscape mode the application load the landscape layout, but if I change the orientation in execution mode the application don't load the new layout...
How can I reload the layout?
while testing, if i load a new version of my application onto my phone, the icon shown in the launcher isn't refreshed. is there any way to tell the launcher to reload its icons?
View 3 Replies View RelatedWhen i load a url in a webview. it loads perfectly. but i touch anything in that webview its redirected to the browser by default.
how to set that link will load in the same webview itself.
I have a database of notes and lists, with three association tables.
Basically, lists are parents of notes and other lists, and notes can be parents of other notes in a outline like hierarchy.
I am using this query to return all notes within a list as well as the number of subnotes each note has.
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This query works just fine, but it's overkill. I don't need to return count(n2.note_id) as Num_Subnotes because I'm only using that value to check if the note has ANY SUBNOTES AT ALL. Essentially it's a boolean value where 0 is false and > 0 is true.
It seems to me that counting all those records is a waste of time when I could just return 1 after finding the first matching value.
Is there a more efficient way to check if count(n2.note_id)>0 in the above query?
I've built a dialog that asks the user to pick a city from the list provided when the application first opens. The dialog works perfectly, however I want to store the user's choice so that when the app is opened a second time, it checks to see if the user has already made a selection previously. If they have, it doesn't display the dialog and defines the city variable as their previously chosen preference. And obviously, if they haven't made a selection previously (because its their first time opening the app or for some reason the app couldn't read the stored preference), it displays the dialog.
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