Android :: Code For Multitouch

Nov 19, 2010

I'm developing an application that must handle multitouch. Basically I want single touch for rotating ( this is no problem ). And multitouch for scrolling.

I have the basic code in, but I'm having problems when the shift from single to multitouch, and vice verca, occur. Basically the movement will jolt because the median position of the multitouch ( two fingers ) and the absolute position of the single finger are at a distance. So if I have two fingers on the screen, they make up a median position, and then lift one finger, it would be like a quick movement from that median position to the absolute single finger position. This will be the movement that I don't want.

This is my code:

CODE:........

The onTouchDown function of the camera just sets the first value of the touch move. That's why I also use it in the up movement to set a new begin value for the single touch movement when coming from a multitouch.

Android :: code for multitouch


Android :: Multitouch Code - Google Provides For SDK Levels 2.0 Or Higher

Dec 25, 2009

Are there any multitouch code examples that Google provides for SDK levels 2.0 or higher? I do searches on here and on google and come up empty.

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Android :: How To Use Multitouch Zoom?

Mar 1, 2010

it should not zoom in too much (x < minZoomLevel etc) or zoom out too much (only one size - width or height - can get smaller than the display size)

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Android :: Handling Of Multitouch?

Sep 22, 2010

I'm trying to do is draw circles around two points that are being touched, and as the fingers drag along on the screen, have these circles follow each finger.

However, I'm getting some weird behavior that I can't figure out. So when I place two fingers on the screen I get my circles no problem. When I drag around with the two fingers everything works like I want it. However, if I lift the first finger, everything stops redrawing, and the second finger that is still on the screen stops being tracked. If I place the first finger back on, everything behaves good again. I figure I must be handling the two fingers poorly.

Also, if I have two fingers on the screen, and I lift and touch the second finger, everything behaves well. It's only in the case where I have two fingers and I lift the first one do I see a problem.

CODE:........................

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Android :: Multitouch Zoom Browsing

Jan 10, 2010

I know that there are browsers like dolphin or xscope that allow multitouch zoom, but I was wondering about something else. I actually happen to like the default browser better than those two, I really just want multitouch. I'm no developer, but I was wondering how possible it would be to take the default browser, and add nothing to it but the multitouch zoom.

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Android :: Multitouch Support In Various Device

Mar 23, 2010

How we can find whether Multitouch support is available or not in various device?

I tried like this:

CODE:............

How we can use that.

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Android :: MapView Overlays With Multitouch

Feb 17, 2010

I'm seeing a bug with overlays on MapView with the Nexus One. Pinch and zoom multitouch gestures don't scale my overlays until the user releases the gesture, at which point the overlay redraws itself. In contrast, the My Location overlay in Google Maps WILL scale during the gesture. Is there a way to fix this in my app, or is this a MapView bug?

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Android :: FC On Application - Related To Multitouch

Feb 6, 2010

I have a user complaining about a FC on my app and they were kind enough to post the stacktrace. It's a class that I cannot find anywhere and it sounds like it is related to multi-touch. I don't specifically call this class, MapView does so I don't have any control over it. It kind of looks like his Google API maps package is trying to use an unknown gesture library. Any ideas? I figure other devs using the MapView class might run into the same issue with their users. The user is using a Droid.

02-06 01:08:37.326: ERROR/AndroidRuntime(4231): Caused by: java.lang.reflect.InvocationTargetException 02-06 01:08:37.326: ERROR/AndroidRuntime(4231): at com.google.android.maps.MapView.<init>(MapView.java:238) 02-06 01:08:37.326: ERROR/AndroidRuntime(4231): at java.lang.reflect.Constructor.constructNative(Native Method) 02-06 01:08:37.326: ERROR/AndroidRuntime(4231): at java.lang.reflect.Constructor.newInstance(Constructor.java:446) 02-06 01:08:37.326: ERROR/AndroidRuntime(4231): at android.view.LayoutInflater.createView(LayoutInflater.java:500) 02-06 01:08:37.326: ERROR/AndroidRuntime(4231): ... 22 more 02-06 01:08:37.326: ERROR/AndroidRuntime(4231): Caused by: java.lang.NoClassDefFoundError: android.view.ScaleGestureDetector 02-06 01:08:37.326: ERROR/AndroidRuntime(4231): at com.google.android.maps.MapView.setup(MapView.java:368) 02-06 01:08:37.326: ERROR/AndroidRuntime(4231): at com.google.android.maps.MapActivity.setupMapView(MapActivity.java:187) 02-06 01:08:37.326: ERROR/AndroidRuntime(4231): at com.google.android.maps.MapView.<init>(MapView.java:280) 02-06 01:08:37.326: ERROR/AndroidRuntime(4231): at com.google.android.maps.MapView.<init>(MapView.java:255) 02-06 01:08:37.326: ERROR/AndroidRuntime(4231): ... 26 more......

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Android :: Multitouch On Droid App Developers?

Dec 19, 2009

Is multitouch available to Android app developers? I've heard its on the new 2.0 version but only seen it accomplished on the Internet browser.

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Android :: Motorola Droid Support The Multitouch API

Nov 2, 2009

I had assumed that the Motorola Droid supports the new multitouch APIs in Android 2.0, but the reviews of the device I've seen so far say that it isn't used, at least in the built-in apps like the browser (e.g: http://www.engadget.com/2009/10/30/motorola-droid-review/ ). Apparently though, it is supported on the upcoming GSM version of the same handset [url], so perhaps it is just an issue of whether the driver is included on the Droid version of the software. Can anyone with access to a Droid confirm whether the multitouch API works on it?

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Android :: Alternatives To Multitouch - Zoom In / Out Applications

Jul 18, 2009

I need to zoom-in/zoom-out for my app. Multitouch would be the most obvious way to go about this *sigh*. I would prefer not to use the zoom-in/out widget. I have been trying a number of other techniques but am not satisfied with the feel. Looking for suggestions from the community on alternative approaches. A one fingered zoom?

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Android :: Droid Multitouch - Possible To Test It In Emulator?

Jan 17, 2010

I recently discovered that the Android 2.0 SDK supports multitouch through new functions in the MotionEvent class. You can specify a pointer index when retrieving touch properties, and in cases where multiple fingers are on the screen there should be multiple pointers provided.

Unfortunately, I only have a G1 to test on and it's running Android 1.5 and not 2.0.

Is there any way to test multitouch without a 2.0 device? In the iPhone simulator, you can hold down option and shift option to perform two fingered pinch and two fingered drag, respectively. Is there any similar functionality in the Android emulator? Is it something I should expect to see in the future, or should I just suck it up and buy a new test phone?

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Android :: Maximum Number Of Multitouch Events

Apr 29, 2010

I am attempting to write an application which will require the user to press, at maximum, four "buttons" (ie regions of the screen) at any one time. I have been looking at the multitouch capabilities of the SDK versions > 5, the MotionEvent.getPointerCount() appears to return the number of presses detected on the screen. *What is the maximum number of presses this function will ever return?*

I went digging through the android source code for the MotionEvent class, and couldn't deduce anything from that, I am wondering if the maximum number of presses is heavily hardware dependent? I modified the MultiTouchVis code by Robert Green (from Battery Powered Games) to report the number of presses reported by MotionEvent.getPointerCount() each frame and on my Milestone it consistently reports a maximum of 2 presses. Is this a hardware thing, or does the sdk limit it to 2 presses?

Is there any way to register more than 2 presses at a time? I'm making a musical application and would like the user, for example, to be able to play chords by pressing multiple keys at any one time.

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Android :: Implement Multitouch Image Zooming?

Jun 16, 2010

I'm displaying an image on full screen now i want to zoom it in or out.
Any one guide on how I can implement multitouch image zooming?

I am using the 2.1 sdk version.

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Android : Apple Granted Multitouch Patent

Jan 27, 2009

via Slashdot ..

http://yro.slashdot.org/article.pl?sid=09%2F01%2F27%2F024242&from=rss

Does this really put the kabosh on multitouch on Android for the next 18 years? Anyone out there have any thoughts on this?

www.smileproject.com

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Sprint HTC Hero :: Stock Android Browser Get Multitouch From 2.1

Feb 12, 2010

With the Droid's 2.1 update, it will be getting multitouch in the browser. So I'm assuming that stock Android browsers will be getting multitouch from 2.1 on forward. I've always been under the impression that the purpose of the Sense browser was to incorporate multitouch that was previously missing in older versions of Android.

With 2.1 coming to our Heros, do you think the new Hero's will just use stock browser? If not, will there be any way to GET the stock browser on the Hero? I honestly think I would like the stock browser better, because I hate the "text autoflow" on the Sense browser. Everytime I zoom, it text-autoflows, and throws me onto some random place on the screen! Plus it makes the browser slower.

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Android :: Multitouch Seems Badly Broken On Nexus One 2.1-update1

Feb 11, 2010

So what I want to know is what is being done about this? Is there a bug file and if so is it.

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Android :: XScope - Multitouch Pinch Zoom Browser

Nov 23, 2009

Spent 2 weeks poking around Android SDKs and sacrificed last two weekends and finally managed to get a relatively stable version today. Named 'xScope', I did put a $2.99 price tag tough if you please excuse me. I need to buy a bird for this thanksgiving and wife kept bashing my development effort for not doing any housework in the past weeks. The browser is not full blown but works great for simple surfing.

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Android :: Test Multitouch Events On Droid Emulator?

May 13, 2010

Can multitouch events be tested on Android Emulator ? Or is there any way to test this without actual device ? I am using 2.0 sdk and want to test zoom-in zoom-out on by two fingers.
Is there a way out ?

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Android :: Make Droid Multitouch Buttons To Be Clickable?

Jul 6, 2010

I need simple multitouch example . I have two button controls. How to make the both to be clickable(pressed) at the same time ?

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Android :: Change Existing Apps Code Of G1 - Calendar And Camera Code

Feb 19, 2009

I wanna to add some code in Camera Apps code , so that it will invoke my Application and do the thing as per my desier. Is it possible to change the Application code? If any one already tried this then plz let me know, how to proceed and build if i change some code. How to integrate my application with camera apps.

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Android :: Put Algorithm Code To Create Binary Library / Link This In Main Function Code?

Jan 27, 2010

I can build a daemon with my algorithm code and main function.I put all files in one folder under /development and make This executable file works successfully

Now I want to separate my algorithm code and main function code. I hope to build a binary library with my algorithm code and main function will link this binary library to use.

Where to put my algorithm code to create binary library and how to link this binary library in main function code?

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Android :: Motionevent - Multitouch Events Give Wrong Coordinates

Jan 6, 2010

I have been racking my brain to try to figure out what is going wrong here. I wanted to experiment with multi-touch, so I decided to add the controls for LunarLander to the touchscreen.

Instead of adding buttons, I defined regions on the screen that when touched, would act like the buttons on the keyboard (for example, the gas fires as long as you press the screen in the area defined for the gas button, and stops firing when you release.)

To do this, I added the onTouchEvent override to the LunarView class as follows:

CODE:.....................

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Android :: Integrating Code With Home Screen Code

Jan 22, 2010

I am trying to integrate my code to the android Home Screen code. I want to launch my activity frm the HomeScreen by click of a button. I Did the code & then build it but when i click the button i m getting error as Application not installed on phone.

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HTC EVO 4G :: Droid X Multitouch In CM6

Oct 10, 2010

I'm trying to use the Droid X Multitouch keyboard in CM6 but I can't get it to work. I go to the .apk and open App Manager and only get an uninstall option. Uninstall is only always unsuccessful? Anyone know how to get this working properly? Download reference page is here. : (Updated 7/22/2010!)Droid X multitouch keyboard 2.1 addition -

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HTC EVO 4G :: Anyone Used Droid X MultiTouch Keyboard

Jun 24, 2010

Is very nice... has anyone else used it yet? This might actually be my daily keyboard now.

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HTC EVO 4G :: Droid X Multitouch Keyboard

Jul 23, 2010

I see there is another thread deicated to this - however I am not getting anywhere with the link provided - seems like all it is ad-ware. I dl'ed the File Manager as asked to do so - is there a clean link to dl the .apk for this keyboard..?

Also - I would like some more feedback on those who have this Droid X Keyboard on their Evo.

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Motorola Droid :: No Multitouch

Oct 30, 2009

Just listened to the Engadget podcast and they said that this device has no multi touch functionality period out of the box. Even the software keyboard does not have it according to them. I need to know if this is real or not it is really bothering me right now. The main reason it is bothering me is because if you go on the VZW Droid Does website in all the features right between turn by turn nav and GTAlk you will see that multitouch is advertised right there. Why would they advertise it if the device does not support it?

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Motorola Droid :: Multitouch

Dec 6, 2009

Is it copyrighted? yes or no? thats what i wanna hear? cause some say yes, some say technically yes, some say no, some say technically no... tell me, is it? and if so than can it come to droid in ways.

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HTC EVO 4G :: Sense Keyboard Multitouch?

Jun 15, 2010

Am I right in that the stock HTC Sense keyboard on the EVO doesn't do multitouch? If that is the case, is there any way to enable this or does it require a marketplace keyboard?

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