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Android: Retrieving shared preferences of other application

Posted by: admin April 23, 2020 Leave a comment


I have a settings application from which i have to retrieve other applications preferences, but i don’t have the details of keys in them, how can i retrieve all the available keys and values in that preference?


How to&Answers:

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());


Okay! using this code in Application 1 ( with package name is “com.sharedpref1” ) to store data with Shared Preferences.

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

And using this code in Application 2 to get data from Shared Preferences in Application 1. We can get it because we use MODE_WORLD_READABLE in application 1:

    try {
                con = createPackageContext("com.sharedpref1", 0);
                SharedPreferences pref = con.getSharedPreferences(
                        "demopref", Context.MODE_PRIVATE);
                String data = pref.getString("demostring", "No Value");

            } catch (NameNotFoundException e) {
                Log.e("Not data shared", e.toString());

More information please visit this URL:


Additionally you have to add same android:sharedUserId in the both app’s manifest file.


Unfortunately the docs now don’t even explain MODE_WORLD_READABLE and MODE_WORLD_WRITEABLE, instead saying:

This constant was depreciated in API level 17.
Creating world-readable files is very dangerous, and likely to cause security holes in applications. It is strongly discouraged; instead, ….etc

Since the depreciation, implementing file sharing between apps with sharedpreferences may be too risky, although it was simple. I’m not too concerned with security holes from the MODE_WORLD_READABLE mode in game apps where I just want to be able to transfer characters from one app to another. It’s too bad they depreciated both sharing modes.


It can work if we want read perference value from other app/pkg/process.
but there is something wrong in jkhouw1’s answer:

Context myContext = createPackageContext("com.example", 

It should be :

Context myContext = createPackageContext("com.example", 

though , CONTEXT_IGNORE_SECURITY and MODE_WORLD_WRITEABLE with the same value of “int 2”
At all ,thanks for this question and answers.


It’s simple to retrieve store shared preferences data of one application to another application.

Step 1: add the same android:sharedUserId="android.uid.shared" in both app’s manifest files.

Step 2: Store Value application1

 SharedPreferences preferences = context.getSharedPreferences("token_id",    Context.MODE_WORLD_READABLE);
        Editor editor = preferences.edit();
        editor.putString("shared_token", encryptedValue);
        Log.e("aaa *** shared_token : ", encryptedValue.toString());

Step 3: Get Value From application2

Context con = null;
        try {
            con = createPackageContext("application2 package name", Context.CONTEXT_IGNORE_SECURITY);
        } catch (PackageManager.NameNotFoundException e) {

        try {
            if (con != null) {
                SharedPreferences pref = con.getSharedPreferences(
                        "token_id", Context.MODE_WORLD_READABLE);

                String data = pref.getString("shared_token", "");
                Log.d("msg", "Other App Data: " + data);
            } else {
                Log.d("msg", "Other App Data: Context null");
        } catch (Exception e) {