App Rating

public class Rating
{
    private final static String APP_TITLE = "AppName";
    private final static String APP_PNAME = "com.yourapp.appname";

    private final static int DAYS_UNTIL_PROMPT = 3;
    private final static int LAUNCHES_UNTIL_PROMPT = 5;

    public static void app_launched(Context _context)
    {
        SharedPreferences prefs = _context.getSharedPreferences("apprater", 0);
        if (prefs.getBoolean("dontshowagain", false))
        {
            return;
        }

        SharedPreferences.Editor editor = prefs.edit();

        // Increment launch counter
        long launch_count = prefs.getLong("launch_count", 0) + 1;
        editor.putLong("launch_count", launch_count);

        // Get date of first launch
        Long date_firstLaunch = prefs.getLong("date_firstlaunch", 0);
        if (date_firstLaunch == 0)
        {
            date_firstLaunch = System.currentTimeMillis();
            editor.putLong("date_firstlaunch", date_firstLaunch);
        }

        // Wait at least n days before opening
        if (launch_count >= LAUNCHES_UNTIL_PROMPT)
        {
            if (System.currentTimeMillis() >= date_firstLaunch + (DAYS_UNTIL_PROMPT * 24 * 60 * 60 * 1000))
            {
                try
                {
                    showRateDialog(_context, editor);
                } catch (Exception _ex)
                {
                    // Possible Market not installed on phone.
                    _ex.printStackTrace();
                }
            }
        }

        editor.commit();
    }

    private static void showRateDialog(final Context _context, final SharedPreferences.Editor _editor) throws Exception
    {
        String title = _context.getString(R.string.rateTitle);
        String msg = _context.getString(R.string.rateMsg);
        String rateButtonText = _context.getString(R.string.rateOKButtonText);

        final Dialog dialog = new Dialog(_context);
        dialog.setTitle(title + " " + APP_TITLE);

        LinearLayout ll = new LinearLayout(_context);
        ll.setOrientation(LinearLayout.VERTICAL);

        TextView tv = new TextView(_context);
        tv.setText(msg);
        tv.setWidth(240);
        tv.setPadding(4, 0, 4, 10);
        ll.addView(tv);

        Button b1 = new Button(_context);
        b1.setText(rateButtonText);
        b1.setOnClickListener(new OnClickListener()
        {
            public void onClick(View v)
            {
                _editor.putBoolean("dontshowagain", true);
                _editor.commit();
                _context.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=" + APP_PNAME)));
                dialog.dismiss();
            }
        });
        ll.addView(b1);

//      Button b2 = new Button(_context);
//      b2.setText("Remind me later");
//      b2.setOnClickListener(new OnClickListener()
//      {
//          public void onClick(View v)
//          {
//              dialog.dismiss();
//          }
//      });
//      ll.addView(b2);
//
//      Button b3 = new Button(_context);
//      b3.setText("No, thanks");
//      b3.setOnClickListener(new OnClickListener()
//      {
//          public void onClick(View v)
//          {
//              if (_editor != null)
//              {
//                  _editor.putBoolean("dontshowagain", true);
//                  _editor.commit();
//              }
//              dialog.dismiss();
//          }
//      });
//      ll.addView(b3);

        dialog.setContentView(ll);
        dialog.show();
    }
}