Android Question webview google maps

merlin2049er · Sep 8, 2014

Hi,

I'm passing the url to a webview...as follows.

WebViewmap.LoadUrl("https://maps.google.com/maps/"& "@" & lat & "," & lon)

I'm picking up the lat/long from the satellite no problem. The google maps page loads, but doesn't actually bring up the location.

I tried that in a desktop browser, and it seems to be fine...

Air · Sep 8, 2014

merlin2049er said:
Hi,

I'm passing the url to a webview...as follows.

I'm picking up the lat/long from the satellite no problem. The google maps page loads, but doesn't actually bring up the location.

I tried that in a desktop browser, and it seems to be fine...

Try...

B4X:

https://maps.google.com/maps?q=" & lat & "," & lon & "&t=Default&iwloc=A"

merlin2049er · Sep 8, 2014

Tried that. That didn't work either.

Air · Sep 8, 2014

Hmmm,
tried it on my app and it works.

Did your lat / lon have a "," inside? If yes, replace it with "."

B4X:

lat = lat.Replace(",",".")
lon = lon.Replace(",",".")

merlin2049er · Sep 8, 2014

ok, I've got a ":" in side of it. I'll try.

B4X:

lat = lat.Replace(":",".")
lon = lon.Replace(":",".")

merlin2049er · Sep 8, 2014

I'll try it again. I missed the '?q='.

merlin2049er · Sep 9, 2014

Ok, getting closer. But google has no matching suggestions from those gps co-ordinates.

Air · Sep 9, 2014

What is "exactly" in the variables lat and lon?

sirjo66 · Sep 9, 2014

Please try this:

B4X:

Log("https://maps.google.com/maps?q=" & lat & "," & lon & "&t=Default&iwloc=A")

But........
if you write that I've got a ":" in side of it may be that the coords inside lan and lon are in Sexagesimal format, not in decimal format (see here for an explanation).

If it is true, you need to convert it, not only replace ":" with "."

Sergio

DonManfred · Sep 9, 2014

sirjo66 said:
But........
if you write that I've got a ":" in side of it may be that the coords inside lan and lon are in Sexagesimal format, not in decimal format (see here for an explanation).
If it is true, you need to convert it, not only replace ":" with "."

That bring us back to

Air said:
What is "exactly" in the variables lat and lon?

merlin2049er · Sep 9, 2014

ok, after replacing the : with a .

I've got the following co-ordinates...

lat = 43.41.929
lon = -79.26.5548

merlin2049er · Sep 9, 2014

Hmm, my gps on the phone must be off quite a bit. If I use the co-ordinates above I land in lake Ontario. lol

I geocoded my address and it's...
43.6988297, -79.4425964

Air · Sep 9, 2014

I geocoded my address and it's...
43.6988297, -79.4425964

Tested. It works. I see Toronto, Kanada

What is the Variable-Type of lat / lon?

It must be String, if you use my HTTP-Link

merlin2049er · Sep 9, 2014

Ok, I'll check the variable type. Thanks.

But this is the location my phone was picking up, and it seems way off.

lat = 43.41.929
lon = -79.26.5548

Air · Sep 9, 2014

lat = 43.41.929
lon = -79.26.5548

Ooops,
These Koordinates show me a point in Germany

if i delete the second points to
lat = 43.41929
lon = -79.265548

i am in Lake Ontario

merlin2049er · Sep 9, 2014

I'm going to try the location manager. No luck with the gps, maybe it's my phone? I'll try another android phone if possible.

Air · Sep 9, 2014

Good Luck

merlin2049er · Sep 9, 2014

Thanks.

sirjo66 · Sep 9, 2014

Ok, I understand that you don't have read my above post.

Air write to you:

What is "exactly" in the variables lat and lon?

but you don't answer

So, I suppose that

B4X:

lat = "43:41.929"
lon = "-79:26.5548"

but this is the same as

B4X:

lat = 43.6988297
lon = -79.4425964

When you have 43:41.929, this is the same as 43° 41.929', so you need to convert it into decimal value.

In fact, if I tell to you "an hour and an half", you can write "1:30" or "1.5" (it's the same !!)

So, you need to convert 1:30 to 1.5 !!!

How to do it ??
Very simple !!

Take the value after ":" (in your case is 41.929) and divide by 60, that is 0.6988
Add the value before ":", and your decimal coords will be 43.6988

Same with lon
-26.5548 / 60 + (-79) = -79.4426

Best regards
Sergio

P.S.: Belgravia Ave ??

merlin2049er · Sep 10, 2014

Yes, exactly. Thanks for the lesson.

Android Question webview google maps

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