@ape wrote an answer here on how to intercept the map clicks, but I need to intercept the touches, and then he suggested the following link in a comment of its answer, How to handle onTouch event for map in Google Map API v2?. That solution seems to be a possible workaround, but the suggested … Read more
Start By going through the Fingerpaint demo in the sdk sample. Another Sample: public class MainActivity extends Activity { DrawingView dv ; private Paint mPaint; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); dv = new DrawingView(this); setContentView(dv); mPaint = new Paint(); mPaint.setAntiAlias(true); mPaint.setDither(true); mPaint.setColor(Color.GREEN); mPaint.setStyle(Paint.Style.STROKE); mPaint.setStrokeJoin(Paint.Join.ROUND); mPaint.setStrokeCap(Paint.Cap.ROUND); mPaint.setStrokeWidth(12); } public class DrawingView extends View { … Read more
OK, I’ve worked it out! It involves changing the CSS slightly and adding some JS. Using jQuery to make it easy: $(document).ready(function() { $(‘.hover’).on(‘touchstart touchend’, function(e) { e.preventDefault(); $(this).toggleClass(‘hover_effect’); }); }); In english: when you start or end a touch, turn the class hover_effect on or off. Then, in your HTML, add a class hover … Read more
I’ve found an easy approach to do that with the ViewPropertyAnimator: float dX, dY; @Override public boolean onTouch(View view, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: dX = view.getX() – event.getRawX(); dY = view.getY() – event.getRawY(); break; case MotionEvent.ACTION_MOVE: view.animate() .x(event.getRawX() + dX) .y(event.getRawY() + dY) .setDuration(0) .start(); break; default: return false; } return … Read more
this is a working example of two fingers move/scale/rotate (note: the code is quite short due to smart detector used – see MatrixGestureDetector): class ViewPort extends View { List<Layer> layers = new LinkedList<Layer>(); int[] ids = {R.drawable.layer0, R.drawable.layer1, R.drawable.layer2}; public ViewPort(Context context) { super(context); Resources res = getResources(); for (int i = 0; i < … Read more
What’s the best way to detect a ‘touch screen’ device using JavaScript?
You want to test the existence with -f and then create a file. But what happens, if between test and creation another task creates the file? mktemp can resolve this problem: filename=$( mktemp ./file1-XXXXXXXXXX ) || exit 1 In this case, an empty file is created (like using touch). The XXXXXXXXXX part is replaced by … Read more