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How can I detect if an Android MapView has been panned or zoomed?


How can I detect if an Android MapView has been panned or zoomed?

By : user3848963
Date : October 24 2020, 11:12 AM
wish help you to fix your issue try mapview-overlay-manager, it is a extension for overlayer for android maps,
it has some simplified OnGestureListener, few example:
code :


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Can Excel charts be interactively zoomed and panned?

Can Excel charts be interactively zoomed and panned?


By : user3577130
Date : March 29 2020, 07:55 AM
may help you . They can if you use dynamic names ranges. Stephen Bullen has a great example here
Screenshot below
Problems with MapView Pin Annotation - Pin loses color when map is zoomed/panned/region changes

Problems with MapView Pin Annotation - Pin loses color when map is zoomed/panned/region changes


By : UserWPFWindows
Date : March 29 2020, 07:55 AM
this will help It's not a problem related to the map reloading tiles.
The issue is that the code in the viewForAnnotation delegate is using the ann object with the incorrect assumption that the class-instance-level ann object will be in sync with whenever the delegate method is called.
code :
MKPinAnnotationView *mypin = [[MKPinAnnotationView alloc] 
    initWithAnnotation:ann reuseIdentifier:@"current"];
MKPinAnnotationView *mypin = [[MKPinAnnotationView alloc] 
    initWithAnnotation:annotation reuseIdentifier:@"current"];
                       ^^^^^^^^^^
PinDrop *ann = (PinDrop *)annotation;
//Note that this local "ann" is NOT the same as the class-level "ann".
//May want to use a different name to avoid confusion.
//The compiler may also warn you about this.

if (ann.price == 1)
...
Is there a way to automatically detect when MapView is zoomed to a certain level?

Is there a way to automatically detect when MapView is zoomed to a certain level?


By : Jane Rose
Date : March 29 2020, 07:55 AM
wish helps you Implement this delegate method inside your view controller that holds your map view:
code :
- (void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated
{        
    if (mapView.region.span.longitudeDelta < DESIRED_VALUE) 
    {
       //code to alert map view
    }

}
How to save Zoomed and Panned Canvas to dataUrl in Javascript

How to save Zoomed and Panned Canvas to dataUrl in Javascript


By : John Chalwe Ngoma
Date : March 29 2020, 07:55 AM
Hope this helps If you just want to generate an image and not change the zoom level of canvas, you can pass multiplier parameter to toDataUrl function.
code :
var dataURL = canvas.toDataURL({
  format: 'png',
  multiplier: 2
});
var dataURL = canvas.toDataURL({
  format: 'png',
  left: 100,
  top: 100,
  width: 200,
  height: 200
});
Get latlng of the map when panned or zoomed

Get latlng of the map when panned or zoomed


By : user785718
Date : March 29 2020, 07:55 AM
To fix the issue you can do You need to use getCenter() method to get the lat and lng at anytime. Use the zoom and drag events as you prefer. Refer the documentation. Make sure you use getCenter() as below
code :
map.on('dragend', function(e) {
    console.log('Lat: ' +  map.getCenter().lat + ' Lng: ' + map.getCenter().lng);
});
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