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PhoneGap zoom-in and zoom-out (Pinching) on Google map
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u me  
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 More options Jun 23 2012, 3:48 pm
From: u me <me.u...@gmail.com>
Date: Sat, 23 Jun 2012 12:48:38 -0700 (PDT)
Local: Sat, Jun 23 2012 3:48 pm
Subject: PhoneGap zoom-in and zoom-out (Pinching) on Google map
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Hi All,

Phonagap + jqurey mobile using i am developing a google map.
in device map is working fine using zoomin '+' and zoomout '-' Button. but
i need to develop my application which will use the 2 finger touch
(pinching)
for zoom-in and zoom-out.

is PhoneGap  provides any Api for (pinching) zoomin and zoomout.
if anyone implemented please Help me...

Thank you
Umesh lakka


 
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Philipp Austermann  
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 More options Jun 24 2012, 1:47 am
From: Philipp Austermann <austerm...@klimagipfel.de>
Date: Sun, 24 Jun 2012 07:47:44 +0200
Local: Sun, Jun 24 2012 1:47 am
Subject: Re: [PhoneGap] PhoneGap zoom-in and zoom-out (Pinching) on Google map
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Hi,

you didn't specify what phone and OS you are testing on, but if i may
take the guess it's an android 2.x device?

The stock browser of these doesn't generate the multitouch gestures in
javascript. Phonegap doesn't fix this (yet ?).

Please have a go at
https://github.com/Philzen/webview-multitouch-polyfill, which is still
rather alpha, but the current version successfully re-enables the
notorious pinch-zoom on OSM & google maps on my phone.

Feel welcome to report your experiences with your own phone and add to
the Device List on the Wiki:
https://github.com/Philzen/webview-multitouch-polyfill/wiki (or file a
bug) - every bit of feedback will help the project.

Cheers - Phil

Am 23.06.2012 21:48, schrieb u me:


 
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Philipp Austermann  
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 More options Jun 27 2012, 12:23 am
From: Philipp Austermann <austerm...@klimagipfel.de>
Date: Wed, 27 Jun 2012 06:23:32 +0200
Local: Wed, Jun 27 2012 12:23 am
Subject: Re: [PhoneGap] PhoneGap zoom-in and zoom-out (Pinching) on Google map
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Hey u me,

have you had a chance to try the multitouch polyfill?

In the meanwhile i was able to build a phonegap-compatible version,
usage instructions may be found on
https://github.com/Philzen/webview-multitouch-polyfill/
<https://github.com/Philzen/webview-multitouch-polyfill/wiki>

If you do, please please report your success or problems and on the wiki
or the issues tracker, we really need all the feedback we can get. Cheers!

Am 24.06.2012 21:13, schrieb u me:


 
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Melvin K.  
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 More options Jan 27, 8:14 pm
From: "Melvin K." <robus...@gmail.com>
Date: Sun, 27 Jan 2013 17:14:28 -0800 (PST)
Local: Sun, Jan 27 2013 8:14 pm
Subject: Re: [PhoneGap] PhoneGap zoom-in and zoom-out (Pinching) on Google map
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Hi Phil,

I just came across this thread as I was searching for solutions to the fact
that the pinch-zoom gesture seems to be terribly implemented in Android
Webviews...not just Android 2.X, but it's awful on my 4.0.3 device too.

I'm trying to get a decent pinch-zoom on a google map in my phonegap
project. While the gesture is indeed supported in the Android 4 webview
natively, the implementation is just not good. When I zoom out, about half
the time I get thrown to a much father-out zoom level and much farther
northwest than expected. It makes using pinch-zoom on maps unusable.

I found a blog post about google maps in webviews in general, with the
following demo: http://www.svennerberg.com/examples/mobile-map/ . Viewing
that on my 4.0.3 phone, it exhibits exactly the same buggy pinch-zoom that
I observed in my own app.

So, my question is.... Can your WMP solution be used with Android 4+ phones
to replace the buggy native pinch-zoom action? I see in WebClient.java
where you build the view conditional on the Android SDK number... Can that
just be changed? Any issues you can think of?

Thanks!


 
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