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Storing a 1D array of strings in Shared Preferences

I have two arrays, the first consists of 9 buttons. The second can hold 9 Strings. I have a method called getPlayerChoiceText to populate the String array with the text that is set on each button from the playerchoice Array. How can I save this text using SharedPreferences?
private String[] getPlayerChoiceText()
{
playerchoiceText[0] = playerchoice[0].getText().toString();
playerchoiceText[1] = playerchoice[1].getText().toString();
playerchoiceText[2] = playerchoice[2].getText().toString();
playerchoiceText[3] = playerchoice[3].getText().toString();
playerchoiceText[4] = playerchoice[4].getText().toString();
playerchoiceText[5] = playerchoice[5].getText().toString();
playerchoiceText[6] = playerchoice[6].getText().toString();
playerchoiceText[7] = playerchoice[7].getText().toString();
playerchoiceText[8] = playerchoice[8].getText().toString();
return playerchoiceText;
}
private void saveData()
{
SharedPreferences sharedPreferences = getSharedPreferences(SHARED_PREFS, MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
playerchoiceText = getPlayerChoiceText();
}

I have got the same problem. I solved it by using JSONArray.
JSONArray choices = new JSONArray();
choices.put("1");
choices.put("2");
choices.put("3");
// Save
SharedPreferences sharedPreferences = getSharedPreferences(SHARED_PREFS, MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString("choices", choices.toString());
// Retrieve
choices = new JSONArray(sharedPreferences.getString("choices", "[]"));
In this way, you can easily do Insert and Delete operations. I hope this helps.

Android's SharedPreferences operates as a key value store, and does not allow you to directly store Java objects. So, representing your player choice text values as a map would make more sense, if you want to store them using shared preferences.
There is one trick you might be able to use here, if you wanted to continue representing your choice texts as an array. You could store the texts using a delimiter, e.g. pipe:
String choices = String.join("|", playerchoiceText);
SharedPreferences prefs = getSharedPreferences(YOUR_PREFS_KEY, Context.MODE_PRIVATE);
prefs.edit().putString("choices", choices).apply();
And then, on the way out:
SharedPreferences prefs = getSharedPreferences(YOUR_PREFS_KEY, Context.MODE_PRIVATE);
String[] playerchoiceText = prefs.getString("choices", "").split("\\|");

Use put/getStringSet():
private void saveData()
{
SharedPreferences sharedPreferences = getSharedPreferences(SHARED_PREFS, MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
String[] playerchoiceText = getPlayerChoiceText();
editor.putStringSet("player_choice", new HashSet<T>(Arrays.asList(playerchoiceText));
editor.commit();
}

How to save web page informations?

I want my app to check some web page only once a day, so I want the data to be saved anded reloaded upon starting the app again.
I followed this tutorial, but I can not save the result with MainActivity extends AppCompatActivity:
String url = "https://en.wikipedia.org/wiki/Main_Page";
SharedPreferences data;
SharedPreferences.Editor dataEditor;
String sDate = date.getString("date", "");
DateFormat df = new SimpleDateFormat("MMMM d");
String date = df.format(Calendar.getInstance().getTime());
if(sDate != date){ // <-- this does not work
new Date().execute();
}
and Date extends AsyncTask<Void, Void, Void>:
Document document = Jsoup.connect(url).get();
Elements date = document.select("div#mp-otd p b");
String sDate = date.getText();
dataEtitor.setString("date", sDate)
dataEtitor.commit;
The "Date extends AyncTask" class always start.

editor.commit() is used in order to save changes to shared preferences.
Add below line of code after setString
dataEtitor.commit(); // commit changes
SharedPreferences Example as follow
SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", 0); // 0 - for private mode
Editor editor = pref.edit();
Storing Data
editor.putBoolean("key_name", true); // Storing boolean - true/false
editor.putString("key_name", "string value"); // Storing string
editor.putInt("key_name", "int value"); // Storing integer
editor.putFloat("key_name", "float value"); // Storing float
editor.putLong("key_name", "long value"); // Storing long
editor.commit(); // commit changes
Retrieving Data
pref.getString("key_name", null); // getting String
pref.getInt("key_name", null); // 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

You muss use !(sDate.equals(date) in place of sDate != date, because the Strings are new and so they can not be compare each other.

Creating arraylist from a string with shared preferences

I want to know how to take a simple string that is being saved in shared preferences but then save each one of those strings and display them into an array list. The user will save the string once a day. And I want the strings to display as an array list. Here's the code for what I'm working with. I have "physical_fragment.java"(SAVES THE DATA) & "MainActivity.java"(LOADS THE DATA).
PHSYICAL_FRAGMENT.JAVA
public void save(View view){
Date date = new Date();
String stringDate = DateFormat.getDateInstance().format(date);
SharedPreferences sharedPreferences = getSharedPreferences("MyData", Context.MODE_PRIVATE);
SharedPreferences.Editor editor =sharedPreferences.edit();
editor.putString("result",String.format(stringDate, date) + " - " + text_view5.getText().toString());
editor.commit();
Toast.makeText(this, "Saved successfully!", Toast.LENGTH_LONG).show();
}
MAINACTIVITY.JAVA
resultPhysical= (TextView) findViewById(R.id.home);
SharedPreferences sharedPreferences = getSharedPreferences("MyData", Context.MODE_PRIVATE);
String result= sharedPreferences.getString("result",DEFAULT);
if (result.equals(DEFAULT))
{
Toast.makeText(this, "No data found", Toast.LENGTH_LONG).show();
}
else
Toast.makeText(this, "Load Successful", Toast.LENGTH_LONG).show();
resultPhysical.setText(result);
}

I'd say use GSON for that.
To convert a list of strings to JSON to be stored in preferences you use this:
List<String> list = ...
Type type = new TypeToken<List<String>>(){}.getType();
String json = gson.toJson(list, type);
and store json in SharedPreferences using putString.
To read from SharedPreferences you use something like this:
String result = sharedPreferences.getString("result", DEFAULT);
Type type = new TypeToken<List<String>>(){}.getType();
List<String> list = gson.fromJson(result, type);

you can do as follows:
SharedPreferences sharedPreferences = getSharedPreferences("MyData", Context.MODE_PRIVATE);
SharedPreferences.Editor editor =sharedPreferences.edit();
ArratList<String> dataList;
String data = "";
for(String itemData:dataList){
data = itemData + String.format(stringDate, date) + " - " + text_view5.getText().toString()+ "/";
editor.putString(data);
}
editor.commit();
Now get the string from Shared preference and split it.
String result= sharedPreferences.getString("result",DEFAULT);
String[] splited = str.split("/");
This helps with out having support of Libraries which can effect size of apk file

SharedPreferences not able to set

Whats wrong with the below code
I am not able to retrieve a simple setting saved in SharedPreferences. s1 is always "". What it the small mistake I am doing >
SharedPreferences sp = getSharedPreferences("MyTestPref", 0);
String s = "Item1";
sp.edit().putString("VAL", (s));
sp.edit().apply(); //also tried commit
String s1 = (sp.getString("VAL", ""));

It should be like this:
String s = "Item1";
sp.edit().putString("VAL", (s));
sp.edit().commit(); //also tried commit
String s1 = (sp.getString("VAL", ""));
use commit() not apply().
EDIT:
final String PREFERENCE_NAME = "your_pref";
String s = "Item1";
SharedPreferences preferences = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.putString("VAL", s);
editor.commit();
String s1 = preferences.getString("VAL", "");

How do i get these values to save?

I need the inserted values in this edittext to show up after i quit the application. I currently have it set up so it'll set new default values if this is the first time for a user to set up the settings page but i can't get the set values to save and load the same values. Here is my code.
if (res.equals("555")) {
//post the saved text
} else if (res.equals("510")) {
editTextname.setText("Firstname Lastname", TextView.BufferType.EDITABLE);
editTextphone.setText("XXX-XXX-XXXX", TextView.BufferType.EDITABLE);
editTextemail.setText("name#yourdomain.com", TextView.BufferType.EDITABLE);
editTextaddress.setText("Street, City, State, Zip", TextView.BufferType.EDITABLE);
//save the entered text above and show it
}

Use SharedPreferences:
SharedPreferences prefs = getSharedPreferences("MyPreference", MODE_PRIVATE);
// On first run:
SharedPreferences.Editor editor = prefs.edit();
if(!prefs.contains("key1"))
editor.putString("key1", "defaultValue1");
if(!prefs.contains("key2"))
editor.putString("key2", "defaultValue2");
editor.commit();
// On save:
SharedPreferences.Editor editor = prefs.edit();
editor.putString("key1", "value1");
editor.putString("key2", "value3");
editor.commit();
// On read:
String value1 = prefs.getString("key1");
String value2 = prefs.getString("key2");