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Unlike previous activities in this chapter, the UI doesn t come from a design timedefined layout, but rather an instance of a closejobView B is the primary UI. The closejobView is defined in listing 12.17. The onCreateOptionsMenu method c is an override of the base View s method, allowing a convenient way to add menus to this screen. Note that two menus are added, one for Sign & Close and one for Cancel. The onOptionsItemSelected method d is invoked when the user selects a menu item. A ProgressDialog and accompanying Handler are instantiated when the user chooses the menu to close a job. Once the progress-reporting mechanism is in place, a new Thread is created and started in order to process the steps required to close the job e. Note that an instance of Prefs is passed in as an argument to the constructor, as that will be needed to store a signature, as we ll show in listing 12.18.

$card = "4567 1234 5678 9101"; $exp = "06/14"; $result = PIPHP_ValidateCC($card, $exp); if (!$result) { // Ask for details again } else { // Debit the card }

' ' ' ' '

The UI at this point is only partially set up; we need a means to capture a signature on the screen of our Android device. The next listing implements the class closejobView, which is an extension of the View class.

In the preceding example, if the card doesn t validate, the details are re-requested, or if it does, the card is processed

public class closejobView extends View { closejobView Bitmap _bitmap; Required extends base Canvas _canvas; classes for class View drawing final Paint _paint; int lastX; int lastY; Initialize public closejobView(Context c) { drawing super(c); classes _paint = new Paint(); _paint.setColor(Color.BLACK); lastX = -1; Save method Add } persists contextual signature public boolean Save(OutputStream os){ data to try { image _canvas.drawText("Unlocking Android", 10, 10, _paint); _canvas.drawText("http://manning.com/ableson", 10, 25, _paint); _canvas.drawText("http://android12.msi-wireless.com", 10, 40, _paint); _bitmap.compress(Bitmap.CompressFormat.JPEG, 100, os); invalidate(); return true; } catch (Exception e) { return false; } } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { Bitmap img = Bitmap.createBitmap(w, h,Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(); canvas.setBitmap(img); if (_bitmap != null) { canvas.drawBitmap(img, 0, 0, null); } _bitmap = img; _canvas = canvas; _canvas.drawColor(Color.WHITE); } @Override protected void onDraw(Canvas canvas) { Draw image if (_bitmap != null) { on screen canvas.drawBitmap(_bitmap, 0, 0, null); } } Handle touch @Override events public boolean onTouchEvent(MotionEvent event) { int action = event.getAction(); int X = (int)event.getX(); int Y = (int)event.getY();

specify the com port specify the PICAXE processor speed up the download speed up the download disable terminal window

identity, checksum, and date requirements for a valid card It should only be used as a quick test to ensure that a user has not made a typographical error when entering their details Also you should keep yourself informed about all the latest card numbers allocated so that you can update this validator and not incorrectly reject any cards You can keep track of the major credit card issuers at http://enwikipediaorg/wiki/Credit_card_numbers

switch (action ) { case MotionEvent.ACTION_UP: // reset location lastX = -1; break; case MotionEvent.ACTION_DOWN: if (lastX != -1){ if ((int) event.getX() != lastX) { _canvas.drawLine(lastX, lastY, X, Y, _paint); } } lastX = (int)event.getX(); lastY = (int)event.getY(); break; case MotionEvent.ACTION_MOVE: if (lastX != -1){ _canvas.drawLine(lastX, lastY, X, Y, _paint); } lastX = (int)event.getX(); lastY = (int)event.getY(); break; } invalidate(); return true; } } }