How do I delete SharedPreferences data for my application?
I'm creating an application that uses a lot of web services to sync data. For testing purposes I need to wipe out some SharedPreferences values when I restart the app.
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I'm having a hard time figuring out the best way to pass simple values from onPause and onResume in the Android activity lifecycle. I understand how to use get and put extra bundles for activity to activity data, but does that work for passing data between the same activity? Should i used SharedPreferences?
View 1 Replies View RelatedI want to know that how to delete all application related data, folder & files when we uninstall application from the device. First tell me it is possible ot not and if possible then please let me know the procedure?
View 1 Replies View Relatedi want to delete file data that i have created in android application. if my application is terminated abnomally or nomally?
View 1 Replies View RelatedI'm making an Android Java app game (although this question applies to all languages really) and hope to release the first version soon. I'm nervous about how I save data in my game. My problem is that, if in a later update, I decide to store more data or store the same data in a different way, I need to be careful I don't lose or corrupt data for users that upgrade (i.e. I want users to be able to use data created by an old version in the new version, like their high scores from before).For example, say I want to save high scores in version 1.
View 3 Replies View Relatedif row_id goes from top to bottom and columns go left to right i dont want to delete the row only all data . is it better to use delete or upgrade?
column1|column2|column3
1 items | name1 |name2
2
3
4
5
is there a way to delete name1 and name2 without deleteing any rows?
i have some code ive been tring but it doesnt work.
[code]
publicboolean updatenotdelete(long rowId, String item, String have, String need, String got, String store, String cost) {
ContentValues args = new ContentValues();
// args.put(KEY_ITEMS, item);
args.put(KEY_HAVE, have);
[Code]....
to start with I've gone through the entire notepad tutorial, I'm a professional game programmer who has some extra time. (though most of my time has been in C++, I did take a year or two of Java classes in college, and remember some of it). I'm not sure the site is a good site to ask questions like this.. If someone has a Forum that might be a good place to ask these newbie questions, please feel free to point me in the direction. I've examined a few of the samples, and think I've a grasp of what I want to do. I've a three to four project plan for some Android releases to sharpen my skills, but since this is my first project and I have never really developed for a mobile phone or the android before, I'd like to make sure I have a solid plan.The first project is an example of the license plate game, however I want to do a few things to change it. Heck maybe when I'm done it'll become a bingo style game, with bluetooth connectivity, you never know. The base idea is I want to offer a list of states, with checkboxes next to them. so to do this, I'll be starting with a Linear List layout similar to the note pad example, and then have a row that is only a Checkbox. I can use text and call strike through if it's been checked off. Perhaps offer an option to not show them if they are checked.
But I want the list to be generated from a set of lists. Maybe all of America's states, maybe reasonable American states (no Hawaii, no Alaska) maybe a North American list, (add in Mexico and some Canadian provinces), a European list, who knows. I'd probably have to have a pop up window that lists all of the lists I suppose using a radiogroup of some sort. So then as far as the data, after weighing options I think best solution is to make a database with two fields, "checked" and "name".I figure I can use the menu for most of the user interaction (aside from clicking on stuff we want to check off) with maybe a few context menu items, I understand how to make all of those already so I should be good. The question I have is what is the best way to populate the lists? Should I create raw data, and have different files for all the lists? Or is there some other way to do this? I've seen this done on the searchable dictionary, but I'd like to hear what people who have actually generated the data like this before. In addition is there an easy way to look at the sql database these applications create, or do you have to run searches on them and output the data? Finally any other suggestion or advice? I definitely want to try to get something like this on the market so I can see the full life cycle and see if anyone actually likes it. (luckily there's not a plethora of them already) but I also want a few people to look over my code if they're willing when I'm done to make sure I've done this right or at least not missing any basic mistakes.
How can I delete data from table data which is in the database named contacts.db something wrong with my code...
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View 1 Replies View RelatedMy problem is using SharedPreferences. I just created a <PreferenceScreen> which holds inside a <ListPreference> with an array of 5 different values. Very simple! The array of values are different numbers: 1, 2, 5, 10 and 30.Every time I change the setting, the application remembers that and I can see the setting I chose when I access the preferences once again (as an user). Now, in the code, when I retrieve the setting using the key (e.g. getString("delay", default_delay);), I always get the default value, it seems that the SharedPreferences does not find my setting. Can anybody help? I have read about SharedPreferences.getEditor().commit(), but that should be used only when changing settings from the code, not from the UI preferences.
View 2 Replies View RelatedI want to add a flag that will tell how much time my application is running. This flag will have to stay even after the application is removed. And, if its installed back, i must have a way to recover this flag. What's a way to implement this?
View 8 Replies View RelatedI'm just wondering, if there is a limit on amount of data I can store in SharedPreferences. ( and if yes, what limit).
View 7 Replies View RelatedI make an app with some activities.
The first is the login.
If I login correctly, I pass to the second activity, and I want download a stream (like twitter), but I cannot keep the session.
I saved user & pass in sharedpreferences, how can i keep the session through all activities?
Now that we can Examining sqlite3 Databases from a Remote Shell, is it possible to examine SharedPreferences from adb shell? Since it would be much more convenient to examine and manipulate SharedPreferences from command line when debugging. Or put in another way, in what files SharedPreferences are saved, and how to view and modify these files?
View 1 Replies View RelatedWith my phone came the Facebook Beta v0.2.0 for Android application. It doesn't allow me to log in and I'm guessing this is because it's the Beta.
I downloaded (I presume) the new version from the Android Market and that seems to allow me to log in. How do I delete the Beta version - and by this I mean to get rid of the shortcut on my Meny and wipe it off my phone's system? With the version I want to delete, there is no option to 'Uninstall' only 'Clear Data' - am I stuck with this now?
I have a Samsung Galaxy i5700 if you need to know.
I am trying to save the date of file parsing, so that when next time user, opens the application, the date can be checked against the last parsing date. I am using shared preference to save the data and retrieve it, but getting error. here is the code:
SharedPreferences settings = getPreferences(0);
String today = new Date(System.currentTimeMillis()).toString();
SharedPreferences.Editor edit = settings.edit();
System.out.println("******** Today : " + today);
edit.putString("lastdate", today);
String fetch = settings.getString("lastdate", "0");
System.out.println("******** Fetch : " + fetch);
txtTest.setText(fetch);
but I am getting null pointer error. am I missing something?
I'm implementing a feature that requires a password, is it safe to store using SharedPreferences.Editor? Is there another recommended way for storing passwords?
View 8 Replies View RelatedI've just tracked down a weird bug in our app where SharedPreferences were failing between power cycles of the phone.
It turns out that one of the strings we were saving had an "&" in it. When I look at the xml that is being persisted I see that this is being encoded as && instead of just &
This means that when you come to read the settings back you don't get any values at all. Is this a known issue? I see lots of posts about preferences dissappearing, but nothing about this.
If not, is there any workaround? I have an array list of objects that have a name and an icon pointer. I do not want to use a database.
View 2 Replies View RelatedI'm trying to prepare an update to one of my apps and I just realized that the updated version cannot read or write over the previous version's SharedPreferences.
Some details: * I'm using the 1.6 SDK and compiling for 1.5.3. * My androidmanifest.xml does not have a sharedUserId (I didn't think I need one if I was not sharing data between different apps).
How to reproduce: * Install my current app from the market * Run the app * Exit and save the setting - invoking SharedPreferences Editor commit (it's using MODE_PRIVATE) * Now install my new update (via a browser download) * Run the app * Everything works fine * Exit & Save *** Now reboot the phone * Run the app again ==> Can no longer access old data or write over it!!
Did I do something wrong? Is it because of the sharedUserId thing? Is it because of the way I'm testing - via market then browser? Why is LogCat reporting a UID change? ==> mismatched uid: 10031 on disk, 10046 in settings; Can I recover from this? I don't want to delete all of my users' data. error ...
android code to delete the database from the application?
View 4 Replies View RelatedDoes somebody knows where the file with the actual stored SharedPreferences is located?
View 1 Replies View RelatedI want to change the android sharedPreferences save path,the sharedPreferences save in /data/data/xxx.xxx.xxx/shared_prefs,i want to change path to /sdcard. how i do?
View 1 Replies View RelatedFrom what I can incur out of the SharedPreferences documentation, I can update a preference, add one or clear all preference values in a shared preference file.
But I want to completely clear everything inside a shared preference file, not just the values, but the preferences they refer to as well.
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.
due to short storage and the large amount of email I receive I decided to install K9 because it stores mail to the sd card. So I deleted account on the stock Htc mail but the data is still there the all 55 meg of it and I cannot find a way to delete it. I ewent in setting and it does show 55mb but no button to erase data a complete reset is not an option I have copilot installed and i doubt it will reinstall with the google checkout number a second time. so My question is , How do I force the email data to erase.?
View 3 Replies View RelatedI am on Grdlocks Vanilla ROM (which I love). I have noticed that available space on my SD card has decreased dramatically. I have a couple questions. Can I complete a NANDROID backup at anytime? Or just when I flash a new ROM? How would I use a NANDROID backup if I actually needed one? Can I delete old ones off my SD card? I have two and they are taking up a lot of space. Do I delete the BDS folder when I delete these?
View 7 Replies View RelatedI am using sgs with miuiv4 by andy,
the media storage got duplicated every boot, every time clear media storage's data at boot before scanner action.
I tried to use init.d with an script i created in /data/local/userinit.sh
I tried pm clear com.android.providers.media,
it works in adb, but when i try it in terminal emulator, it keep showing me "segmentation fail"
I am frequently getting a "low on application space" msg telling me to delete apps. Does anyone know how to allocate more of the 4+gb I seem to have free in phone storage OR clear cache or something? It doesn't seen right to have 4gb free and be so low on app space that I can't exec Google Talk without deleting applications 1st.
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