Android: Retrieving Shared Preferences of Other Application

Android: Retrieving shared preferences of other application

Assuming the preference are WORLD_READABLE, this might work:

final ArrayList<HashMap<String,String>> LIST = new ArrayList<HashMap<String,String>>();
// where com.example is the owning  app containing the preferences
Context myContext = createPackageContext("com.example", Context.MODE_WORLD_WRITEABLE); 
SharedPreferences testPrefs = myContext.getSharedPreferences("test_prefs", Context.MODE_WORLD_READABLE); 
Map<String, ?> items = testPrefs .getAll();
for(String s : items.keySet()) {
  // do something like String value = items.get(s).toString());
}

Get access to shared preferences of another application

What Waqas says is correct, you can't use another applications data/shared preference unless it's shared somehow. But if you have access to both applications you should not use:

PreferenceManager.getDefaultSharedPreferences();

As the default uses MODE.PRIVATE which means you can only read the shared preference from the app it's initialized in.

If you have access to both applications you could use either:

PreferenceManager.setDefaultValues();

In order to change the default mode or use a preference with a name and mode and instead of getting the default use:

getSharedPreferences(NAME, MODE);

You can read more in the docs and maybe figure out if it suits your needs.

Use Shared Preferences of other application

referring to this question i think you have to do the following:

In Application1:

SharedPreferences prefs = getSharedPreferences("demopref",
                    Context.MODE_WORLD_READABLE);
            SharedPreferences.Editor editor = prefs.edit();
            editor.putString("demostring", strShareValue);
            editor.commit();

and, in Application 2:

try {
    con = createPackageContext("com.sharedpref1", 0);
    SharedPreferences pref = con.getSharedPreferences(
    "demopref", Context.MODE_PRIVATE);
    String data = pref.getString("demostring", "No Value");
    displaySharedValue.setText(data);
} catch (NameNotFoundException e) {
    Log.e("Not data shared", e.toString());
}

Tell me if it works!:)

EDIT: anyway, Content Providers are the best way to do it

EDIT 2: if you strongly want to use sharedPrefs, try adding in manifest this:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.hello"
android:versionCode="1"
android:versionName="1.0" 
android:sharedUserId="com.example"> //<-- this line

EDIT 3: here is a guide on how to use ContentProvider :)

Retrieving sharedpreferences in another activity

One of the nice things about the SharedPreference class is that it is designed to be available to any Activity within you application. You can retrieve any SharedPreference with two simple calls:

SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
String desiredPreference =  sharedPreferences.getString("NameOfSharedPreference", "DefaultValue");

While it may seem obvious make sure that you have actually created and stored the data you wish to save before you try and retrieve it. To continue on the example above, use the following code snippet to store your data into SharedPreferences:

Editor editor = sharedPreferences.edit();
editor.putString("NameOfSharedPreference", "ValueToStore");
editor.commit();

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