Question

I am doing a quiz, in that I have 3 activities Question1, Question2, Question3,and on each there is 4 possible answers (buttons), only one button is correct. I must calculate and display the score of the user at the end of the quiz.

I have done some research and SHAREDPREFERENECES seem to be the solution. But i dont know how to use it can anyone help please. Question1.java code is below: Assume that btnAnswer1a is the correct answer, how do i save the data and then display it in a textview in the last activity.

 Button Answer1, Answer2, Answer3, Answer4;
 public static final String PREFS_NAME = "MyPrefsFile";
 static SharedPreferences settings;
 SharedPreferences.Editor editor;
 int ScoreCount;

 @Override
 public void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.answer1);

  settings = getSharedPreferences(PREFS_NAME, 0);
  editor = settings.edit();

  ScoreCount = settings.getInt("ScoreCount", 10);

   Answer1 = (Button) findViewById(R.id.btnAnswer1a);
   Answer2 = (Button) findViewById(R.id.btnAnswer1b);
   Answer3 = (Button) findViewById(R.id.btnAnswer1c);
   Answer4 = (Button) findViewById(R.id.btnAnswer1d);

   Answer1.setOnClickListener(this);
   Answer2.setOnClickListener(this);
   Answer3.setOnClickListener(this);
   Answer4.setOnClickListener(this);

         }

@Override
public void onClick(View arg0) {
    // TODO Auto-generated method stub
switch (arg0.getId()) {


    case R.id.btnAnswer1a:
          Intent Screen1 = new Intent(Answer1.this, Color2.class); 
          Answer1.this.startActivity(Screen1); 
          editor.putInt("ScoreCount", 6);
          editor.commit();
        break;


case R.id.btnAnswer1b:
      Intent Screen = new Intent(Answer1.this, Color2.class); 
    Answer1.this.startActivity(Screen);  
    break;

case R.id.btnAnswer1c:
      Intent Screen3 = new Intent(Answer1.this, Color2.class); 
    Answer1.this.startActivity(Screen3);  
    break;

case R.id.btnAnswer1d:
    Intent Screen2 = new Intent(Answer1.this, Color2.class); 
    Answer1.this.startActivity(Screen2);  
   break;


}

Answer 1

When you want to write something to SharedPreferences use this

SharedPreferences sharedPreferences = getSharedPreferences("your_name_of_shared_preferences", 0);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.clear();
editor.putInt("result", resultValue);
editor.commit();

And to read something from them just do this

SharedPreferences sharedPreferences = getSharedPreferences("your_name_of_shared_preferences", 0);
int result = sharedPreferences.getInt("result", defaultValue);

resultValue is your quiz result and defaultValue is needed in situation when you didn’t write anything to sharedPreferences under that key.