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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I am using a PreferenceActivity to let the user set some values. I am feeding it the xml file with the defined preferences.
I have set all the android:defaultValue="" for them.
When I start my application, I need the preferences, or if they are not set yet manually, I want the default values:
CODE:.................
However, when android:defaultValue="true" I still get false. So, it looks like the defaultValues set in the XML are not used anywhere but when initializing the preferences-screen.
I don't want to hardcode the default values in the getBoolean() method. So, is there a way get the default-values with only defining these in 1 place?
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?
View 2 Replies View RelatedCurrently, 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.
I have a preferences page which is defined by XML - including some default values. I use a PreferenceActivity to display and handle this page. Whenever I use this page to set the preferences the preference file on the file system is updated properly - I can see this via adb. However, whenever I go back to the settings page after have changed some of the settings, it's the defaults that are shown. Worse than that, if I press back without changing any settings, it then sets the, all back to the default. How I can get the prefs to actually show the current settings? My PreferenceActivityis created thus:
@Override protected void onCreate(Bundle savedInstanceState) {
PreferenceManager.getDefaultSharedPreferences(this) .registerOnSharedPreferenceChangeListener(this);
setDefaults(this); super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.settings); }
The XML looks like this:
<?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<ListPreference android:id="@+id/numberOfYearsList"
android:key="numberOfYears" android:title="Number of Years to Read the Bible"
android:summary="How many years would you like to take to read through the reading plan?"
android:entries="@array/numberOfYears" android:entryValues="@array/numberOfYears"
android:dialogTitle="How Many Years?" android:defaultValue="1" />
<CheckBoxPreference android:key="ignoreDates" android:id="@+id/ignoreDatesCheckbox"
android:title="Ignore Dates" android:summary="Would you like to use the dates in the plan?"
android:defaultValue="false" /> </PreferenceScreen>
Prefs are defined in preferences.xml, arrays.xml, and strings.xml. Default values are defined in strings.xml.
For example:
CODE:................
I have an Android library project that makes calls to PreferencesManager.getDefaultSharedPreferences.
I have 2 version of my app, paid/free, and they are not able to access the preferences stored by the library code.
Can someone tell me the right way to store values in SharedPreferences in library code and have the values available to projects that include the library?
I want to start with a consistent test environment so I need to reset/clear my preferences. Here's the SetUp for test I have so far. It's not reporting any errors, and my tests pass, but the preferences are not being cleared.
I'm testing the "MainMenu" activity, but I temporarily switch to the OptionScreen activity (which extends Android's PreferenceActivity class.)
I do see the test correctly open the OptionScreen during the run.
CODE
:...............
StartNewActivity Code:
CODE:.................
I have used some static variable in my application, i want to clear static variable value when will i close my application.anybody know please give solution for that.
View 11 Replies View RelatedMy application is used on multiple platforms so it saves it preferences to a file (rather than to the standard Android SharedPreferences).
Is there any easy of reusing the PreferenceActivity to save preferences to a file or is it a case of creating a whole new activity to do the job? If the latter is the case is there a layout I can use that will make the activity look like the normal preferences screen? PreferenceActivity uses com.android.internal.R.layout.preference_list_content but this doesn't appear to be available to apps for reuse.
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?
View 1 Replies View RelatedWe 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?
I want to ask where does the defaults values of memory min-free values of a Rom reside? I mean what file I would have to edit to edit those values?
View 1 Replies View RelatedMy android application has two kinds of preferences:
1) I have user preferences defined in res/xml/preferences.xml so that users can manage their preferences with a PreferenceActivity.
2) I'd like to define another file for global configuration preferences of my app.
What is the best way to manage my app config preferences? Should I create another XML file with config values or should I specify those config values in strings.xml? What is the best practice for managing config preferences?
I would like some of my preferences to have icons, like the Settings app. I guess one way of doing this would be to copy all the relevant code and resources from the Settings app, but it seems like overkill for a couple of icons.
View 2 Replies View RelatedWhat exactly does HTC Sense Clear Data actually clear? That may be a solution to reverting back to 5 homescreen pages instead of 7 without having to do a factory reset. Just curious as to what I am going to mess up? Will i just have to personalize the homescreen again, put widgets up, reconnect to fb, twitter, myfaves, etc. It's not going remove any 3rd party apps, just make me create new widgets, etc..?
View 3 Replies View RelatedI can access the preferences and add and change them. How can I view the entire file that stores the keys and values for sharedpreferences in my app. I have changed, added and removed some keys from my code and would like to see the effect on the preference file.
View 1 Replies View RelatedIn an Android utility class, I want to get a system preference value in a class, but I don't have the context there, because the class that calls it doesn't have the context either. I've found that for Resources one can use the static Resources.getSystem() function. Is there any similar way for getting system preferences without context?
My class isn't an activity nor service. It's a utility class. Could give more info if needed.
I can create a new preferences file by calling Context.getSharedPreferences(String name, int mode), putting some values in the returned preferences' editor, and committing. However, I don't see an interface in the API to remove the created file when I no longer need it. I've tried Context.deleteFile(String name), passing in the same name argument from above, but that returns false, indicating the file wasn't actually deleted. I'm using MODE_PRIVATE, if that makes a difference. Browsing the source for context's implementation of the editor doesn't reveal any clues either, as far as I can tell. Any ideas? The background here is that I'm allowing my users to save copies of their "current" preferences so that they can restore previously saved settings. When they don't want those settings anymore, I want to remove the saved preferences file so it doesn't take up space. At the moment the best I can do is an edit().clear().commit on the file, which I believe will remove most of the contents. Not as good as delete, though.
View 1 Replies View RelatedNew Android developer here - I'm hoping this is simple.
I want to create a "row-based" prefs dialog, like you see in most standard apps. You know, black background, fading-line separators, bigger/bold label text for each entry, smaller description text, perhaps a checkbox/down arrow.
Is there a standard object in the Android API for this? If not, how do people usually create these?
I save preferences in one activities but not able to get saved preferences in other activity. I can access saved preferences in the same activity but not in other one.
It is not giving me any error but always gibing null values in second activity.code...
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.
View 2 Replies View RelatedI think that it would be too complex to open a database. Does using shared preferences make my app's data size become big. Is there a temporary storage place for my data or should I delete the data in the shared preferences for that widget.
View 1 Replies View RelatedSay my app has a widget and I use a configuration screen to do initial app widget setup and set a few preferences.
I want the user to be able to change those settings by simply going into my app's settings screen and clicking an intent preference to open up the same options the user was given when the app was created.
Can I use the same activity as the configuration activity? Will I have to handle it differently? How does the existing widget get updated with the new settings?
How can I get this to work?
I'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 RelatedI am attempting to add a simple preferences file in a new Android project (New -> Android XML File), but it doesn't appear to be working correctly.
There is no root element to choose from when I select the Preference type layout. If I press Finish, it doesn't do anything. See screenshot below.
If I store some user settings and information in shared preferences in my android apps, and then I update the app in the Market, will those settings be erased when the app updates?
View 1 Replies View RelatedI 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?