Develop Reference

Unable Create any SharedPreferences

I usually use this code for creating sharedPrefs file:
SharedPrefrences SP = getSharedPrefrences("MYPREF",0);
SP.getString("Username","x");
But now if I see this directory:
"/data/data/packageName/"
There is no shared_prefs directory.
Another thing : if I use Editor its work properly.

First you need to store some data in shared preferences using apply()/commit() method so that you retrieve data from there.
SharedPrefrences SP = getSharedPrefrences("MYPREF",0);
SP.edit().putString("Username","SOME NAME").apply();
System.out.println("Username is : "+SP.getString("Username","x"));

First of all you have to SET the data with an Editor
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor editor = preferences.edit();
editor.putString("Name","Pepito");
editor.apply();
Then you can read it as follows :
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
String name = preferences.getString("Name", "Here's the default value");
If you've set the value after make that getString() your String value will be "Pepito", otherwise you'll get "Here's the default value"

Share preferences not accesible via IntentService

I am saving a value in Preference, but it always give me the default value. When the app is opened, I can get the actual value. But when I am getting the value from the IntentService, it always give me the default value.
Code for saving the value:
prefs = context.getSharedPreferences(NAME, Context.MODE_PRIVATE);
Editor editor = prefs.edit();
editor.putString(key, value);
editor.commit();
Code for reading the value:
prefs = context.getSharedPreferences(NAME, Context.MODE_PRIVATE);
String value = prefs.getString(key, defaultValue);
But if i change file name then its working for some period but afterward again it start giving default value

Try changing your access mode from Context.MODE_PRIVATE since you are reading it from outside.
Try
prefs = context.getSharedPreferences(NAME, Context.MODE_MULTI_PROCESS);

Retrieving stuff from Shared Preferences:
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(Context);
String s = sp.getString("key", null); // get "value" from the Shared Preferences

SharedPreferences does not work - getString always returns the default value

I have a problem with SharedPreferences in Android.
This is my code:
SharedPreferences s = this.getSharedPreferences("kurs",MODE_WORLD_READABLE);
s.edit().putString("eur", "1.80");
s.edit().commit();
SharedPreferences a = this.getSharedPreferences("kurs",MODE_WORLD_READABLE);
String kurs = a.getString("eur","7");
Toast hhh= Toast.makeText(getApplicationContext(),kurs, Toast.LENGTH_LONG);
hhh.show();
I´m setting the String and want to read it out directly after that in the onCreate method. But i always get the specified default value "7".
What was wrong? I already researched for that problem, but i can´t found helpful things.
Thanks for your help :)

Each time you call "s.edit()" a new editor is created. Thus your "commit()" call is on an instance of the editor that has not had your setting applied. Try this:
SharedPreferences s = this.getSharedPreferences("kurs",MODE_WORLD_READABLE);
Editor editor = s.edit();
editor.putString("eur", "1.80");
editor.commit();

Please try my code below. What i think is wrong in your code, that you are using different "Editor" instances here:
"s.edit().putString("eur", "1.80");"
and here
s.edit().commit();
private static String APP_SHARED_PREFS = "MyAppID";
// Write the value
SharedPreferences.Editor prefsEditor = getSharedPreferences(APP_SHARED_PREFS, Activity.MODE_PRIVATE).edit();
prefsEditor.putString("KEY", "VALUE");
prefsEditor.commit();
// Get the value
return getSharedPreferences(APP_SHARED_PREFS, Activity.MODE_PRIVATE).getString("KEY", "");

SharedPreferences myPrefs = this.getSharedPreferences("kurs", MODE_WORLD_READABLE);
SharedPreferences.Editor editor = myPrefs.edit();
editor.putString("eur", "1.80");
// commit the edits
editor.commit();
SharedPreferences myPrefs = this.getSharedPreferences("myPrefs", context.MODE_WORLD_READABLE);
String kurs = myPrefs.getString("eur", "7");
Toast hhh= Toast.makeText(getApplicationContext(),kurs, Toast.LENGTH_LONG);
hhh.show();
Try This

not getting integer value from SharedPreference

I am trying to store user id in SharedPreference in one activity and want to get this integer id in any activity.
To put this value in Shared Preference i use following code.
SharedPreferences myPrefs = getSharedPreferences("myPrefs", MODE_WORLD_READABLE);
SharedPreferences.Editor prefsEditor = myPrefs.edit();
prefsEditor.putInt("userId", varaible);
prefsEditor.commit();
Then i am trying to get this value, i use following code for this
SharedPreferences myPrefs = getSharedPreferences("myPrefs", MODE_WORLD_READABLE);
int userId = myPrefs.getInt("userId", -1);
But it return me -1 not userId. and if i use following line to fetch integer value then it will showing runtime exception.
int userId = myPrefs.getInt("userId", Integer(null));
I don't understand what's wrong in my code. How to get this integer userId in my another activity.
Please give me any reference or hint.
Thanks in advance.

There is nothing wrong with your code and I tested this exact case and it is working perfectly. For sure you can use the default value as -1.
Do you have both activities in the same application?
What I can suggest for debugging is to make sure that your application runs in the sequence you expect and that the value is stored correctly. You can try to retrieve it directly after storing it within the same activity.

Change this:
SharedPreferences myPrefs = getSharedPreferences("myPrefs", MODE_WORLD_READABLE);
int userId = myPrefs.getInt("userId", -1);
to this
SharedPreferences myPrefs = getSharedPreferences("myPrefs", MODE_WORLD_READABLE);
int userId = myPrefs.getInt("userId", 0);
it should work that way.

Issue with shared preference

I am using Android 2.1 sdk and I am trying to save user loggin session in to Shared preferences, the thing is after saving the value to the shared preference I am unable to retrive it. Here I am pasting the code I used to save and fetch value from SharedPrefrence.
public void setValue(String name, String value, String prefName) {
sharedPref = mContext.getSharedPreferences(prefName, Context.MODE_PRIVATE);
sharedPref.edit().putString(name, value);
sharedPref.edit().commit();
}
public String getValue(String name, String prefName) {
String value = null;
sharedPref = mContext.getSharedPreferences(prefName, Context.MODE_PRIVATE);
value = sharedPref.getString(name, value);
return value;
}
Did i miss some thing in this code, I am not retrieving any exceptions while saving and retrieving the value. Thanks for any help.

Every call to edit() returns you a new Editor instance. So you get an instance, make a change and leave it alone. Then you get a second one and commit that without changes, which results in no value changes in the preferences.
Rather chain in the commit():
sharedPref.edit().putString(name, value).commit();
Alternatively break it up into multiple lines with one specific instance:
Editor e = sharedPref.edit();
e.putString(name, value);
e.commit();

private SharedPreferences myPrefs;
myPrefs = Actionactivity.this.getSharedPreferences("myPrefs", MODE_WORLD_WRITEABLE);
SharedPreferences.Editor prefsEditor = myPrefs.edit();
prefsEditor.putString("Mobile_no", getText_no.getText().toString().trim());
prefsEditor.commit();
myPrefs = this.getSharedPreferences("myPrefs", MODE_WORLD_READABLE);
myPrefs.getString("Mobile_no", "");
try this one code work