SharedPreferences from different activity

Question

I load from activity A the SharedPreferences in following way:

private void SavePreferences(String key, String value){
    SharedPreferences sharedPreference         


        

Answer 1

use getApplicationContext() instead of this in both Activities as:

In activity A the SharedPreferences in following way:

 private void SavePreferences(String key, String value){
        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());

        SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putString(key, value);
        editor.commit();
        Intent sd=new Intent(this,Secongtess.class);
        startActivity(sd);
       }

and in Activity B get Value as:

 private void LoadPreferences(){   
       SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
     String  data = sharedPreferences.getString("name", "08:00") ;
     Toast.makeText(this,data, Toast.LENGTH_LONG).show();
   }

because as doc says:

getDefaultSharedPreferences(Context context) :

Gets a SharedPreferences instance that points to the default file that is used by the preference framework in the given context.

Answer 2

To store values in shared preferences:

SharedPreferences preferences==PreferenceManager.getDefaultSharedPreferences(this);
  SharedPreferences.Editor editor=preferences.edit();
  editor.putString("Name","Harneet");
  editor.commit();

To retrieve values from shared preferences:

SharedPreferences preferences==PreferenceManager.getDefaultSharedPreferences(this);
  String name=preferences.getString("Name","");
  if(!name.equalsIgnoreCase(""))
  {
    name=name+"  Sethi";  /* Edit the value here*/
  }

To edit data from sharedpreference

SharedPreferences.Editor editor = getPreferences(MODE_PRIVATE).edit();
 editor.putString("text", mSaved.getText().toString());
 editor.putInt("selection-start", mSaved.getSelectionStart());
 editor.putInt("selection-end", mSaved.getSelectionEnd());
 editor.commit();

To retrieve data from shared preference

SharedPreferences prefs = getPreferences(MODE_PRIVATE); 
String restoredText = prefs.getString("text", null);
if (restoredText != null) 
{
  //mSaved.setText(restoredText, TextView.BufferType.EDITABLE);
  int selectionStart = prefs.getInt("selection-start", -1);
  int selectionEnd = prefs.getInt("selection-end", -1);
  /*if (selectionStart != -1 && selectionEnd != -1)
  {
     mSaved.setSelection(selectionStart, selectionEnd);
  }*/
}