I have made a shared preference activity that store the user settings, now i want to get values in a activity or normal java class.please provide a solution or example i have already tried this code but failed.
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
SharedPreferences channel=this.getSharedPreferences(strFile, Context.MODE_PRIVATE);
strChannel=channel.getString(keyChannel,"Default").toString();
Toast.makeText(getApplicationContext(), strChannel, Toast.LENGTH_LONG).show();
}
in this code strfile for eg. com.android.pack.ClassName is SharedPreference Activity from values to be fetched, and keyChannel is key that is same in SharedPreference Activity.
Kindly provide the solution.
This question is related to
android
sharedpreferences
If you have a SharedPreferenceActivity by which you have saved your values
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
String imgSett = prefs.getString(keyChannel, "");
if the value is saved in a SharedPreference in an Activity then this is the correct way to saving it.
SharedPreferences shared = getSharedPreferences(PREF_NAME, MODE_PRIVATE);
SharedPreferences.Editor editor = shared.edit();
editor.putString(keyChannel, email);
editor.commit();// commit is important here.
and this is how you can retrieve the values.
SharedPreferences shared = getSharedPreferences(PREF_NAME, MODE_PRIVATE);
String channel = (shared.getString(keyChannel, ""));
Also be aware that you can do so in a non-Activity class too but the only condition is that you need to pass the context of the Activity. use this context in to get the SharedPreferences.
mContext.getSharedPreferences(PREF_NAME, MODE_PRIVATE);
You use uninstall the app and change the sharedPreferences name then run this application. I think it will resolve the issue.
A sample code to retrieve values from sharedPreferences you can use the following set of code,
SharedPreferences shared = getSharedPreferences(PREF_NAME, MODE_PRIVATE);
String channel = (shared.getString(keyValue, ""));
This is the procedure that seems simplest to me:
SharedPreferences sp = getSharedPreferences("MySharedPrefs", MODE_PRIVATE);
SharedPreferences.Editor e = sp.edit();
if (sp.getString("sharedString", null).equals("true")
|| sp.getString("sharedString", null) == null) {
e.putString("sharedString", "false").commit();
// Do something
} else {
// Do something else
}
I tried this code, to retrieve shared preferences from an activity, and could not get it to work:
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
sharedPreferences.getAll();
Log.d("AddNewRecord", "getAll: " + sharedPreferences.getAll());
Log.d("AddNewRecord", "Size: " + sharedPreferences.getAll().size());
Every time I tried, my preferences returned 0, even though I have 14 preferences saved by the preference activity. I finally found the answer. I added this to the preferences in the onCreate section.
getPreferenceManager().setSharedPreferencesName("defaultPreferences");
After I added this statement, my saved preferences returned as expected. I hope that this helps someone else who may experience the same issue that I did.
Source: Stackoverflow.com