Calculating zoomToSpan() degrees based on min/max lat/lng to be in the mapView

Posted by Itsik on Stack Overflow See other posts from Stack Overflow or by Itsik
Published on 2010-05-15T11:46:23Z Indexed on 2010/05/15 11:54 UTC
Read the original article Hit count: 860

Filed under:

android

|

mapview

|

google-maps

|

zooming

I have a cluster of items on an overlay in a mapView.
I know where the top/bottom/left/right most objects are.
I want to use the zoomToSpan() method to zoom onto that area.

What is the proper way to calculate the lat/lng degrees for this method ?

© Stack Overflow or respective owner

Related posts about android

Please verify my layout: bottom button keeps coming up over keyboard

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi everyone, I have a layout which does almost what I want. There's just one bug regarding the button at the bottom. I should stay at the bottom at all times. But whenever I bring up the soft-keyboard the button will be displayed above the keyboard. This is not what I want but it should become covered… >>> More
Android programming. Application stopped unexpectedly.

as seen on Stack Overflow - Search for 'Stack Overflow'
I've just created a prototype of interface for my android app and tried to run it. Unfortunately I get an error that my app has stopped unexpectedly (my reputation doesn't allow me to post images so follow my links): screenshot of error message This is layout mode of editing. Everything looks as… >>> More
Listview Row Overlap Problem

as seen on Stack Overflow - Search for 'Stack Overflow'
I just updated my app and I am getting some odd complaints from people who update it. I am only getting complaints from people with non-stock android phones (phones that manufacturers have modified...HTC phones, cliq, pulse, etc), other phones like the Droid, Nexus work fine. My app (Photo Frame Deluxe)… >>> More
Why are some of my view not aligned correctly at the bottom of my relative layout?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have problems getting some of my views aligned in a relative layout that I use inside a row of my listview. Here is a screenshot from the layout builder in Eclipse, this is what I think it should look like: The next image is from the emulator. Now the TestTestTest View is at the top and covers… >>> More
Android RatingBar weirdness: Whenever I add a RatingBar to my layout, a bunch of the generated tags,

as seen on Stack Overflow - Search for 'Stack Overflow'
Whenever I use a RatingBar view in my layout, I suddenly get all kinds of compile errors. I'm using Android 2.0, but I've also tried 2.0.1, and 2.1, without joy. I also get a message: Shader 'android.graphics.BitmapShader' is not supported in Layout Editor, and an odd warning which may or maynot be… >>> More

Related posts about mapview

Android: Cannot cast from View to MapView

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to run the Android MapView example, and am getting a 'Cannot cast from View to MapView' error in Eclipse. My layout is as follows <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/mainlayout" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"… >>> More
Removing and then adding MKAnnotations to a MapView is leaving me with a blank MapView

as seen on Stack Overflow - Search for 'Stack Overflow'
A followup to this quesiton: http://stackoverflow.com/questions/2944581/forcing-reload-of-view-when-returning-from-flipsideview-of-utility-application When returning from the flipside view, I'm calling NSArray *annotations = [NSArray arrayWithArray:[mapView annotations]]; [mapView removeAnnotations:annotations]; To… >>> More
Android "Hello, MapView" Tutorial - Map Tiles Do Not Load

as seen on Stack Overflow - Search for 'Stack Overflow'
I am new to Android software development and new to this site. I am hoping someone might have some experience with the problem I am having. I've been following the Hello, MapView tutorial in order to not only learn the Android framework, but also the Google Maps library. I've tried my best to implement… >>> More
Adding visible "Markers" to represent Geopoints to a MapView using ItemizedOverlay in Android

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I am building an application which stores GPS locations in a SQLite database and then outputs the data onto a MapView using an Overlay by drawing a red line between the points. I want to be able to show graphical markers (images) for each of these points as well as the red line. My code… >>> More
launching mapview from main activity (button)

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all. Going round in circles here i think. I have an activity called Locate; public class Locate extends Activity { public static String lat; public static String lon; public static String number; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); … >>> More