Android Shared preferences for creating one time activity (example) [closed]

Question

I have three activities A,B and C where A and B are forms and after filling and saving the form data in database(SQLITE). I am using intent from A to B and then B to C.What i want is that every time I open my app I want C as my home screen and not A and B anymore.

I guess shared preferences would work for this, but I cannot find a good example to give me a starting place. Any help would be appreciated.

Answer 1

Setting values in Preference:

// MY_PREFS_NAME - a static String variable like:  //public static final String MY_PREFS_NAME = "MyPrefsFile"; SharedPreferences.Editor editor = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE).edit();  editor.putString("name", "Elena");  editor.putInt("idName", 12);  editor.apply(); 

Retrieve data from preference:

SharedPreferences prefs = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE);  String name = prefs.getString("name", "No name defined");//"No name defined" is the default value. int idName = prefs.getInt("idName", 0); //0 is the default value. 

More info:

Using Shared Preferences

Shared Preferences

Answer 2

Create SharedPreferences

SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);  Editor editor = pref.edit(); 

Storing data as KEY/VALUE pair

editor.putBoolean("key_name1", true);           // Saving boolean - true/false editor.putInt("key_name2", "int value");        // Saving integer editor.putFloat("key_name3", "float value");    // Saving float editor.putLong("key_name4", "long value");      // Saving long editor.putString("key_name5", "string value");  // Saving string  // Save the changes in SharedPreferences editor.apply(); // commit changes 

Get SharedPreferences data

// If value for key not exist then return second param value - In this case null

boolean userFirstLogin= pref.getBoolean("key_name1", true);  // getting boolean int pageNumber=pref.getInt("key_name2", 0);             // getting Integer float amount=pref.getFloat("key_name3", null);          // getting Float long distance=pref.getLong("key_name4", null);          // getting Long String email=pref.getString("key_name5", null);         // getting String 

Deleting Key value from SharedPreferences

editor.remove("key_name3"); // will delete key key_name3 editor.remove("key_name4"); // will delete key key_name4  // Save the changes in SharedPreferences editor.apply(); // commit changes 

Clear all data from SharedPreferences

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