Trying to share string

public class main extends Activity {
    private Quotes mQuotes = new Quotes();
    private ColorChange mColorWheel = new ColorChange();
    public String shareQuote = "It sets it right away";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //Declaration of all Variables
        final TextView quoteDisplay = (TextView) findViewById(R.id.quoteDisplay);
        final Button QuoteButton = (Button) findViewById(R.id.quoteButton);
        final RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.relativeLayout);
        final Button dayButton = (Button) findViewById(R.id.dayButton);



        View.OnClickListener listener = new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //Sets the text on the main screen
                String quote = mQuotes.getQuote();
                quoteDisplay.setText(quote);
                //Changes all of the color on background and text on buttons
                int color = mColorWheel.getColor();
                relativeLayout.setBackgroundColor(color);
                QuoteButton.setTextColor(color);
                dayButton.setTextColor(color);
                shareQuote = quote;


            }
        };
        QuoteButton.setOnClickListener(listener);

        //Quote of the day Listener
        View.OnClickListener dayListener = new View.OnClickListener() {
            @Override
            public void onClick(View view) {

            }

        };
        dayButton.setOnClickListener(dayListener);

    }
    //Action bar code
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        //Share button support
        MenuItem shareItem = (MenuItem) menu.findItem(R.id.menu_item_share);

        ShareActionProvider mShare = (ShareActionProvider) shareItem.getActionProvider();

        //setting up the share
        Intent shareIntent = new Intent(Intent.ACTION_SEND);
        shareIntent.setAction(Intent.ACTION_SEND);
        shareIntent.setType("text/plain");
        mShare.setShareIntent(shareIntent);
        //Sending the actual output to the other apps
        shareIntent.putExtra(Intent.EXTRA_TEXT, shareQuote);

        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}