Re: [PhoneGap] PhoneGap zoom-in and zoom-out (Pinching) on Google map

[Philipp Austermann]

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:
> 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]

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/

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:

Hi, Cheers phil

Thank you for your reply

I am new one in PhoneGap and i tried many way to do the pinching zoom. I will try it later.

For these application i am using  MEDIATEK (device) with Android 2.3.1

And using PhoneGap i am capturing Image in phone (device) and i have to submit it to the server. and i was gone through this link   

[ https://www.ibm.com/developerworks/mydeveloperworks/blogs/94e7fded-7162-445e-8ceb-97a2140866a9/entry/upload_a_picture_using_phonegap_on_android8?lang=en ]

where the code given but its not working. Showing error as Upload failed: Code 3 

This code is working in iOS. but using Android device its showing error.

Using phoneGap how i will upload the captureed image to the server.

Please help me

Thank you.

But the code is is correct but using phoneGap its not working.

--
Regards

Maharudrappa lakka

[Melvin K.]

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!