Android :: Can't Write SharedPreferences After Update / Sort It Out?
Sep 28, 2009
I'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 ...
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Oct 23, 2010
How can I retrieve SharedPreferences for a widget during an update pushed by a broadcast receiver?I have a static BuildUpdate method on my AppWidgetProvider, but I cannot work out how to retrieve my shared preferences as I do not have an appropriate context.
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May 12, 2010
Running Build ESD49, downloaded the 2.1 file from like 6 different sites, named it update.zip (not .zip.zip), put it in the ROOT of my SD card - and I continuously get the following error code...
there's a whole lot more between the first and last entry but you experts probably know exactly what I am referring to.
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May 23, 2010
The weather widget on my Incredible (the one with the flip clock) will not auto update. I tap the sun/moon to get into the weather gadget, tap settings, on the top is a box to allow auto update. When its checked I get a warning of data use, allow, then back out to home. When I go back to weather settings, the box isn't checked.
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Mar 5, 2010
Magic not cooperating with ROM update
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Sep 25, 2010
Has anyone used HBOGo on the Incredible since the froyo and flash update? Everytime I go to the website I can't do anything. It would be nice to watch movies and hbo films on my phone.
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May 5, 2009
I am creating a simple application of database... I am first time using it.. I tried sample program, But it has lot of errors... Can any one tell me how can write simple INSERT DELETE UPDATE quries...?ans also Is there any settings for the database in eclipse...?
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Feb 25, 2013
my phone did an automatic update and when I open text messages it tells me please wait, and doesnt respond. Also a couple apps arent working now...
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Apr 14, 2013
I really want to learn how to make good update-script file ,,
EX : what should i do if i want to flash media apps , Conversation & phone book ....?
What is the correct sums ?
I Used Aroma-app tool but i got FC.
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Nov 21, 2010
My 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.
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Mar 3, 2010
I'm just wondering, if there is a limit on amount of data I can store in SharedPreferences. ( and if yes, what limit).
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Nov 19, 2010
I 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?
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Aug 7, 2009
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?
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Jun 23, 2010
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?
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Feb 7, 2009
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?
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Mar 6, 2009
I'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.
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Sep 10, 2010
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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Oct 6, 2010
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.
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May 30, 2010
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?
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Apr 2, 2010
Does somebody knows where the file with the actual stored SharedPreferences is located?
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Oct 12, 2010
I 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?
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Sep 2, 2010
From 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.
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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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Jul 19, 2010
I love how SharedPreferences work in android and I would like to know if there is an easy way to save them to another file so I could load a previous instance of the prefs and vice versa. Basically when you load this file, all the preferences would change to how you had it before at once. I want to be able to swap 3 or 4 different versions of the same pref keys in this way. Is there an easy way to do this?
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Mar 9, 2009
We have an online multiplayer game that saves some login information in the SharedPreferences. Our app is copy protected and everything was going really well until this weekend when we released an update for it. It seems that at least some of the people are having their SharedPreferences deleted when they updated too the new app. As you can imagine our users are furious because they're all loosing their profiles, and our ranking is dropping fast.
We've tried to reproduce this a hundreds ways but are unable. We're wondering if this could be related to installing a copy protected app over a copy protected app? Since that's the only situation we haven't tested and can't test.
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Sep 2, 2010
I want to store a time value and need to retrieve and edit it. Can somebody guide me here with a sample code/project please?
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Feb 3, 2010
Why are my SharedPreferences suddenly deleted, after I updated my game in the Market?
Here is the logcat...
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Jun 21, 2011
My first android application has to do with showing activities at different times. All works fine ... except that when I retrieve the shared preferences in an activity activated from the notification manager, all my options are reset to default values.
Similarly, when I try to reinstall an alarm after the phone is switched off, all the previously stored shared preferences options are non-existent.Is there something special that has to be set in the manifest, or do I have to retrieve the context in a special manner? from a broadcastReceiver?
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Sep 14, 2009
We want to store credentials for a user to a web service so the user doesn't have to repeatedly login, but we're concerned about security. We can't store a hash on the database, but we could probably use JCE encryption locally.
Is the content in SharedPreferences secured on the Android device?
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Sep 14, 2013
How to delete an item from a ListView.
I have a layout which includes the listview, an edittext and a button. On button click, the edittext's string is added to the listview. Clicking on a listview item opens a dialog which asks for confirmation to delete that item. When confirmation is received, the item appears to delete. But when the delete button is clicked on another item, the item deletes, but the previous item reappears in its spot. From my limited understanding, I assume that the item doesn't delete from the SharedPreferences, and so when they are loaded again, the item reappears. I've tried clearing the SharedPreferences before saving after delete, but this didn't work (though I could've been doing it wrong).
I've included the whole class incase to test it out in IDE. I understand there are a lot of unneeded objects and the code is quite messy which is a result of me screwing around with the code to try and get this to work. Though everything works as it should, aside from deletion.
[HIGH]
package com.example.send2omni;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
[Code]....
And here's the layout to save some time:
[HIGH]
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
androidrientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
[Code]...
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