How To Save And Fetch Integer Value In Shared Preference In Android?

I want to save and fetch the static integer value of Snow Density in Shared Preferences and change when user select another value in the Single choice. My Code : public static

Solution 1:

You can use shared preferences as follows

//To saveSharedPreferencessettings= getSharedPreferences("YOUR_PREF_NAME", 0);
SharedPreferences.Editoreditor= settings.edit();
editor.putInt("SNOW_DENSITY",mSnowDensity);
editor.commit();

//To retrieveSharedPreferencessettings= getSharedPreferences("YOUR_PREF_NAME", 0);
intsnowDensity= settings.getInt("SNOW_DENSITY", 0); //0 is the default value

getSharedPreferences() is a method of the Context class. If you are inside a Activity or a Service (which extend Context) you can use it like in this snippet. Else you should get the context using getApplicationContext() and then call getSharedPreferences() method.

For more options you can refer to the documentation at http://developer.android.com/guide/topics/data/data-storage.html#pref

Solution 2:

To save in the SharedPreferences:

privatefinalStringPREFS_NAME="filename";
privatefinalStringKEY_DENSITY="den";

Contextctx= getApplicationContext();
SharedPreferencessharedPreferences= ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editoreditor= sharedPreferences.edit();

editor.putInt(KEY_DENSITY, mSnowDensity);
editor.commit();

To get the value:

Contextctx= getApplicationContext();
StringstrSavedValue=null;
SharedPreferencessharedPreferences= ctx.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);

strSavedValue = sharedPreferences.getInt("den", anyDefaultValue);

Solution 3:

Save the value in prefrence

privatevoidSavePreferences(String key, int value) {
        SharedPreferencessharedPreferences= getPreferences(MODE_PRIVATE);
        SharedPreferences.Editoreditor= sharedPreferences.edit();
        editor.putInt(key, value);
        editor.commit();
    }

get the value from preference

privatevoidshowPreferences(String key){
        SharedPreferencessharedPreferences= getPreferences(MODE_PRIVATE);
        intsavedPref= sharedPreferences.getInt(key, 0);

       }

You can use the key as the shared preference name

Solution 4:

Initialization We need an editor to edit and save the changes in shared preferences. The following code can be used to get the shared preferences.

SharedPreferencespref= getApplicationContext().getSharedPreferences("MyPref", 0); // 0 :- for private modeEditoreditor= pref.edit();

Storing Data

editor.putBoolean("key_name", true); 
editor.putString("key_name", "string value"); 
editor.putInt("key_name", "int value"); 
editor.putFloat("key_name", "float value");
editor.putLong("key_name", "long value");  
editor.commit(); 

Retrieving Data

pref.getString("key_name", null); // getting String
pref.getInt("key_name", -1); // getting Integer
pref.getFloat("key_name", null); // getting Float
pref.getLong("key_name", null); // getting Long
pref.getBoolean("key_name", null); // getting boolean

Clearing or Deleting Data

editor.remove("name"); // will delete key name
editor.remove("email"); // will delete key email

editor.commit(); // commit changes


editor.clear();
editor.commit(); // commit changes

Solution 5:

Saving preference is not a troubling task. But if you have a lot of such configurable options you could use a PreferenceActivity and override onSharedPreferenceChanged.

More details here http://developer.android.com/guide/topics/ui/settings.html