Wie aktiviere ich touchEvents (Scrollen und Schwenken) in MKMapview unter einer benutzerdefinierten UIView?
Alternativtext http://www.gisnotes.com/wordpress/wp-content/uploads/2009/09/poly.png
Kurz gesagt, ich versuche herauszufinden, wie die in einer benutzerdefinierten Ansicht (geometryView) über MKMapView (mapView) implementierte Geometrie (Punkt, Linie und Polygon) skaliert wird.
Was ich getan habe war ..
Erstellen Sie DrawMapViewController. Fügen Sie die UIBarButtonItems (MAP, PT, LN, PG) in der unteren Symbolleiste hinzu.
Wenn Sie auf die Schaltfläche "Karte" klicken, können Sie die Karte schwenken / zoomen. Dies aktiviert die Kartenansicht, indem die geometryView.hidden = YES gesetzt wird.
Wenn auf eine der drei Geometrie-Schaltflächen geklickt wird, wird die Geometrieansicht durch geometryView.hidden = NO angezeigt, wodurch touchEvents aktiviert und die Geometrie aus der GeometryView.drawRect-Methode gezeichnet wird.
Die Reihenfolge der Ebenen lautet wie folgt: mapView befindet sich am unteren Rand von geometryView.
-geometryView
-Kartenansicht
Was ist mein problem Idealerweise hoffe ich, dass der Benutzer während des Kartenmodus und beim Schwenken und Zoomen die Zeichnung in geometryView anzeigen kann. Wenn der Benutzer jedoch auf "map" klickt, ist geometryView.hidden = YES und die Zeichnung verschwindet. Wenn ich geometryView sichtbar mache, interagiert der Benutzer mit geometryView und nicht mit mapView, sodass kein Zoomen und Schwenken erforderlich ist.
Ist es möglich, TouchEvents (Schwenken / Zoomen) von MKMapView unterhalb einer benutzerdefinierten Ansicht zu verarbeiten, während die benutzerdefinierte Ansicht angezeigt wird? Alle anderen Ideen / Ansätze werden sehr geschätzt.
Vielen Dank,
Rupert
GeometryView-Liste:
@synthesize mapview, pinFactory;
- (id)initWithFrame:(CGRect)frame{
if (self = [super initWithFrame:frame]) {
}
return self;
}
- (void)drawRect:(CGRect)rect {
// Drawing code
NSLog(@"DrawRect called");
CGContextRef context = UIGraphicsGetCurrentContext();
// Drawing lines with a white stroke color
CGContextSetRGBStrokeColor(context, 1.0, 1.0, 1.0, 1.0);
// Draw them with a 2.0 stroke width so they are a bit more visible.
CGContextSetLineWidth(context, 2.0);
if(pinFactory.geometryState == 2){ //Draw Line
if( [pinFactory actualPinCount] > 1){
Pin *pin1 = (Pin *)[[pinFactory pinArray] objectAtIndex:0];
CGPoint pt1 = pin1.touchLocation;
CGContextMoveToPoint(context, pt1.x, pt1.y);
for (int i = 1; i < ([pinFactory actualPinCount]); i++)
{
Pin *pin2 = (Pin *)[[pinFactory pinArray] objectAtIndex:i];
CGPoint pt2 = pin2.touchLocation;
CGContextAddLineToPoint(context, pt2.x, pt2.y);
}
CGContextStrokePath(context);
}
}
else if(pinFactory.geometryState == 3){ //Draw Polygon
//if there are two points, draw a line first.
//if there are three points, fill the polygon
if( [pinFactory actualPinCount] == 2){
Pin *pin1 = (Pin *)[[pinFactory pinArray] objectAtIndex:0];
CGPoint pt1 = pin1.touchLocation;
CGContextMoveToPoint(context, pt1.x, pt1.y);
Pin *pin2 = (Pin *)[[pinFactory pinArray] objectAtIndex:1];
CGPoint pt2 = pin2.touchLocation;
CGContextAddLineToPoint(context, pt2.x, pt2.y);
CGContextStrokePath(context);
}
else if([pinFactory actualPinCount] > 2){
//fill with a blue color
CGContextSetRGBFillColor(context, 0.0, 0.0, 1.0, 1.0);
Pin *pin1 = (Pin *)[[pinFactory pinArray] objectAtIndex:0];
CGPoint pt1 = pin1.touchLocation;
CGContextMoveToPoint(context, pt1.x, pt1.y);
for (int i = 1; i < ([pinFactory actualPinCount]); i++)
{
Pin *pin2 = (Pin *)[[pinFactory pinArray] objectAtIndex:i];
CGPoint pt2 = pin2.touchLocation;
CGContextAddLineToPoint(context, pt2.x, pt2.y);
}
CGContextClosePath(context);
CGContextDrawPath(context, kCGPathFillStroke);
}
}
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
[self setNeedsDisplay];
UITouch* aTouch = [touches anyObject];
location = [aTouch locationInView:self];
NSLog(@"touchesBegan: x:%f, y:%f", location.x, location.y );
CLLocationCoordinate2D coordinate = [mapview convertPoint:location toCoordinateFromView:self];
switch (pinFactory.geometryState) {
case 1:{
if( [pinFactory actualPinCount] == 1){
//[UIView beginAnimations:@"stalk" context:nil];
//[UIView setAnimationDuration:1];
//[UIView setAnimationBeginsFromCurrentState:YES];
Pin *pin = (Pin *)[pinFactory getObjectAtIndex:0];
[mapview removeAnnotation:pin];
[pinFactory removeObject:pin];
Pin *newPin = [[Pin alloc] initWithCoordinate:coordinate initLocation:location withTitle:@"My Pin"];
[pinFactory addObject:newPin];
[mapview addAnnotation:newPin];
[newPin release];
//[UIView commitAnimations];
}
else{
//Lets add a new pin to the geometry
Pin *pin = [[Pin alloc] initWithCoordinate:coordinate initLocation:location withTitle:@"My Pin"];
[pinFactory addObject:pin];
[mapview addAnnotation:pin];
[pin release];
}
break;
}
case 2:{
//Lets add a new pin
Pin *pin = [[Pin alloc] initWithCoordinate:coordinate initLocation:location withTitle:@"My Pin"];
[pinFactory addObject:pin];
[mapview addAnnotation:pin];
[pin release];
[self setNeedsDisplay];
break;
}
case 3:{
//Lets add a new pin
Pin *pin = [[Pin alloc] initWithCoordinate:coordinate initLocation:location withTitle:@"My Pin"];
[pinFactory addObject:pin];
[mapview addAnnotation:pin];
[pin release];
[self setNeedsDisplay];
break;
}
default:
break;
}
}
- (void)dealloc {
[super dealloc];
}
@end
DrawMapViewController-Liste:
#import "DrawMapViewController.h"
#import "Pin.h"
@implementation DrawMapViewController
@synthesize mapview, mapBarButton, pointBarButton, lineBarButton, polygonBarButton, geometryView;
/* State represents state of the map
* 0 = map
* 1 = point
* 2 = line
* 3 = polygon
*/
// The designated initializer. Override to perform setup that is required before the view is loaded.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
// Custom initialization
self.title = @"Map";
}
return self;
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
mapview.mapType = MKMapTypeSatellite;
NSMutableArray *pinArray = [[NSMutableArray alloc] initWithObjects:nil];
pinFactory = [[PinFactory alloc] initWithArray:pinArray];
pinFactory.map = mapview;
[pinArray release];
geometryView = [[GeometryView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 320.0f, 372.0f)];
geometryView.pinFactory = pinFactory;
geometryView.mapview = mapview;
geometryView.backgroundColor = [UIColor clearColor];
[self.view addSubview:geometryView];
[self changeButtonAndViewState:0];
}
/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[mapBarButton release];
[pointBarButton release];
[lineBarButton release];
[polygonBarButton release];
[super dealloc];
}
- (IBAction)mapBarButtonPressed{
NSLog(@"mapBarButtonPressed");
[self changeButtonAndViewState:0];
}
- (IBAction)pointBarButtonPressed{
NSLog(@"pointBarButtonPressed");
[self changeButtonAndViewState:1];
if( [pinFactory actualPinCount] > 0){
[self resetGeometry];
}
}
- (IBAction)lineBarButtonPressed{
NSLog(@"lineBarButtonPressed");
if( [pinFactory actualPinCount] > 0){
[self resetGeometry];
}
[self changeButtonAndViewState:2];
}
- (IBAction)polygonBarButtonPressed{
NSLog(@"polygonBarButtonPressed");
if( [pinFactory actualPinCount] > 0){
[self resetGeometry];
}
[self changeButtonAndViewState:3];
}
- (void)resetGeometry{
NSLog(@"resetting geometry.. deleting all pins");
[mapview removeAnnotations:[pinFactory pinArray]];
NSMutableArray *array = [pinFactory pinArray];
[array removeAllObjects];
[geometryView setNeedsDisplay];
}
- (void)changeButtonAndViewState:(int)s{
[pinFactory setGeometryState:s];
mapBarButton.style = UIBarButtonItemStyleBordered;
pointBarButton.style = UIBarButtonItemStyleBordered;
lineBarButton.style = UIBarButtonItemStyleBordered;
polygonBarButton.style = UIBarButtonItemStyleBordered;
pointBarButton.enabled = YES;
lineBarButton.enabled = YES;
polygonBarButton.enabled = YES;
switch ([pinFactory geometryState]) {
case 0:{
mapBarButton.style = UIBarButtonItemStyleDone;
geometryView.hidden = YES;
break;
}
case 1:{
pointBarButton.enabled = NO;
pointBarButton.style = UIBarButtonItemStyleDone;
geometryView.hidden = NO;
break;
}
case 2:{
lineBarButton.enabled = NO;
lineBarButton.style = UIBarButtonItemStyleDone;
geometryView.hidden = NO;
break;
}
case 3:{
polygonBarButton.enabled = NO;
polygonBarButton.style = UIBarButtonItemStyleDone;
geometryView.hidden = NO;
break;
}
default:
break;
}
}
-(void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animate{
NSLog(@"regionDidChangeAnimated");
}
@end