I want to implement a code in android to show area covered by a PINCODE that is six digit area code on google map as shown in the screenshot attached.
Kindly provide a way how can I accomplish this thing.Thanks in advance.
You can try the Google Maps Geocoding service to locate the area or region that you type in your maps. Geocoding is the process of converting addresses into geographic coordinates, which you can use to place markers or position the map.
Geocoding has a required parameter address that you need to supply in order for it to locate/geocode the address that you type. And this address supports the postal_code that you want to search.
Although this code is in JavaScript, here is the link for the example code and how to use Geocoding.
For the area part that you want to return when searching postal_code, I think you can use Polygons.
A polygon represents an area enclosed by a closed path (or loop), which is defined by a series of coordinates. Polygon objects are similar to Polyline objects in that they consist of a series of coordinates in an ordered sequence. Polygons are drawn with a stroke and a fill. You can define custom colors, weights, and opacities for the edge of the polygon (the stroke) and custom colors and opacities for the enclosed area (the fill).
For more information about Polygons, Check this example and the above link for documentation.
Also check this sets of link that may give you an idea.
How do I show the boundaries of postcodes on google maps?
How do I highlight any area boundary on Google Maps?
Google Maps Highlight a particular area
Currently Google Maps APIs do not expose the boundaries of postal codes areas.
There is corresponding feature request in public issue tracker:
https://code.google.com/p/gmaps-api-issues/issues/detail?id=4008
However, it looks like Google didn't set a priority on this task.
UPDATE
As #kaskader mentioned I posted a link for Maps JavaScript API feature request. Sorry for confusion.
Please have a look at another answer where you can find a workaround for your question.
https://stackoverflow.com/a/43918793/5140781
Related
I started Google map in android few days age. I am doing some basic things like set marker on tap, draw line between two marker etc.
Here users can draw polygon with tapping on the device. Now i want to edit the shape. I goggled it but didn't find any helpful solution for android.
I found some resource on google map java script API like user-editable-shapes in javascript
I want to do the same in android. How to Edit or Modify polygon in Google Map Android API
It will be helpful if u provide some resource.
It looks to me like you have to replace all the points at once with setPoints on the polygon object.
https://developers.google.com/android/reference/com/google/android/gms/maps/model/Polygon.html#setPoints(java.util.List)
I'm currently trying to do the same thing in Xamarin. I mock up an edit mode when the user clicks on the polygon by changing its stroke color and then adding custom markers to each vertex. I'm holding a selected vertex which will move to the user's next click on the map and update the polygon.
I know we can restrict results from autocomplete by country
https://developers.google.com/places/documentation/autocomplete
But is it possible to restrict it by area bounds too? this can be done in js lib.
But what about the api? I am trying to restrict results in my android app
Have a look at radius in the documentions paragraph optional parameters:
radius — The distance (in meters) within which to return place results. Note that setting a radius biases results to the indicated
area, but may not fully restrict results to the specified area. See
Location Biasing below.
Does anyone know how to:
1) make the Google map not zoom-able? make it so it is at a fixed zoom size and the user cannot change it?
2) have the map API load a picture of my choosing and overlay the little blue dot of the user's current location over it?
Here is what I want to do, I'm want to have a custom picture of the world (that i have created in Photoshop or w/e, it will be .jpeg, .png, or whatever file format will work) the picture of the world will be 'artsy' and I just want the Google maps to overlay the little blue dot of where you are in the world. For example, if you are in New York, NY, you will see the picture of the world with the blue dot over what on the picture is New York.
Any help will be greatly appreciated, Thanks
You should be able to control the map as follows:
map = (MapView) findViewById(R.id.mapview);
map.setBuiltInZoomControls(false);
As for overlaying an image, you'll need to create an image layout file (in XML) and then inflate that over the top of the map. This tutorial shows you the basics of inflating a layout and adding it to an existing view:
http://www.mysamplecode.com/2011/10/android-dynamic-layout-using-xml-add.html
To position the inflated layout (your image), you will need to use LayoutParams (http://developer.android.com/reference/android/widget/LinearLayout.LayoutParams.html) to set the position of the new view on to the map.
Hope that helps.
Regarding you second question: it sounds like you actually want to replace the Google Maps tiles by images you've created yourself. As far as I know, that's not possible with the Maps API. You can potentially hack something together by adding your own creation as overlay to the map, but that may not give your the results you're looking for, especially if you want the user to still be able to pan/drag the map around.
In stead, you might want to take a look at the osmdroid (Open Street Maps for Android) project. They do support loading in your own tiles via the ModularTileProviderArchitecture. It'll probably give you more freedom and flexibility, but might be overkill for what you're after.
I know that OSM is hip and cool, but the OP asked about Google maps — and the question is readily answered in the Google Maps API documentation (https://developers.google.com/maps/documentation/javascript/).
The Google Maps API has supported custom maps for years. I think you can edit their first "ImageMapType" (https://developers.google.com/maps/documentation/javascript/maptypes#CustomMapTypes) example to solve your problem.
In your case, you would set the "maxZoom" and "minZoom" fields to whatever zoom you want to create artwork for. Use the "mapOptions" dictionary to take away the zoom control. You'll need to cut your artwork into tiles, and replace their "getTileUrl" function with one that returns your tiled image.
i've come up with an idea that has a mask effects in google maps so that it can highlight a city .but i've searched the internet again and again found no document about this.
so ,is it possible to make mask effects in android or ios just like the effets below? and how to?
http://cadgis-blog.blogspot.com/2011/10/google-maps-create-cool-mask-effect-on.html
So there's two problems there. The first is where to get the boundary data from, and the second is how do you draw it on a map.
Answering the second part first, if you're using the iOS map view (MKMapView): you'll want to look into MKPolygonView. You can definitely highlight an arbitrary polygon, but the usual highlighting effect looks like a coloured overlay inside the polygon.
The thing to do, therefore, would be to make a huge polygon that encompasses the entire country, with your region as a hole in the polygon. That is, I believe, what your demo does. You can make an MKPolygon with the polygonWithPoints:count:interiorPolygons: method, and pass in your 'hole' as an interior polygon to be cut out.
Regarding the first part, how to get the data: what you need is a set of latitude/longitude pairs that make up the border for your region. Your example used this dataset, which is administrative borders for Switzerland. You'll need to find yourself a dataset that encompasses the borders for cities in the country you're interested in. I would imagine that you would store the coordinates of the borders in a database embedded in your app.
I want to build an app that uses GPS data and a building map I provide to show the user where in the building on the map they are. This will be done in a specific building that i already know gets GPS and cell service.
At first I thought the easiest way to do this was to see if I could use Google maps to plot the users location and then just "overlay" my custom building map on top of the Google map so that I wouldnt have to deal with any of the gps information or the complexities of the mapping I would just have to scale my "overlay" to fit properly on top of the Google map so that the user was shown in the correct room in a building. I'm wondering if anyone can provide me any information on how to do this or if there is an easier way to accomplish my map. Any information at all is helpful!
You want...
Google Map View
...and more specifically you will probably want to read the subsection appropriately titled: "Part 2: Adding Overlay Items"
EDIT: Whoops! Nevermind! I misread your question... that is only if you want to overlay an item on the map. Sorry...
There is no possibility to use closer zoom level than that you can see on standard GMap i.e. in browser. Other problem is that google uses GeoPoint class based on cardinal microdegrees to draw overlays, and it's accuracy is to low.
You can look on jGarminImg - it's java library - unfortunately written for using with swing, but it should be relatively easy to make it work with android. On the other hand - you have to make your own map.
You can use standard overlays, or you can make your map in kml format and use this example to display it.
You may be able to achieve this with a custom view that displays your building plan and knows the precise co-ordinates of each corner of the building.
When you receive your location updates you can add a marker to your custom view by translating the real world position into a position in the image using something along the lines of:
pseudocode:
markerX = realWorldX - mapStartX;
markerY = realWorldY - mapStartY;
if( isOnMap( markerX, markerY ) )
{
drawMarker( markerX, markerY );
}
Yes you can overlay bitmap images on top of the Google MapView.
All you have to do is subclass the Overlay class, override the draw method, and draw on the canvas. You have to provide a rectangle of GeoPoints (probably the top left and the bottom right corners) to anchor the building bitmap on top of the MapView. You use mapView.getProjection() to translate the latitude and longitude into xy coordinates on the canvas.
I assume drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) will be useful here. Bear in mind that src and paint can be null. If the GeoPoints you used are accurate, the bitmap will adjust automatically to pans and zooms, although it might get pixelated if the user zooms in too much.
edit: I am not so confident that Google Maps will have your building stays at the exact same GeoPoints in different zoom levels, so you might have to adjust those values for different zoom levels
If you need only the map of the building, it should not be too difficult to plot the location on an image without using Google Maps, provided that you can determine your location as coordinates inside the building.
You need to know two coordinates: north-west and south-east corners of the building map you are using. When you get GPS location updates, the correct location on the map image can be easily calculated based on these corner coordinates.
I would do it like this,
Place a marker on the google map to indicate the position of the building
Drilling down on the building would load your building map as a custom view. Plot the user location on the custom view
I think trying to overlay your building map on a google map while possible will be more complex to code than doing it via a custom view.
Also overlaying the lowest zoom level with your building map is not going to give you enough resolution unless you have a thumping big building. Whole blocks are pretty small
One issue you have probably already considered is the device will revert to cell tower and wifi for it's location when inside the building giving you a less accurate location fix.