Develop Bugs

multi touch fix for desire?

Hey guys wondering all these Rom makers or Google/htc made any multi touch fix?
With all the custom kernels and open source roms, has any developer attempted to fix this issue?
Would like to play games without on screen keyboard issues due to multi touch, this also affects typing fast.
Thanks

Hardware not software please do some research

Thanks. So does the s-lcd have the same issues?

Ronaldo_9 said:
Thanks. So does the s-lcd have the same issues?
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the type of screen does not make a difference its the bit that lets the phone detect touch that is the issue here.
All HTC devices detect only one touch, and then detect the "size" of that touch which allows it to have pinch zoom when it detects a change in the size.
It cannot detect 2 individual touches.

please delete

bedeabc said:
Wait a minute, the Desire does have a basic multi touch digitiser... pinch to zoom in the browser etc. proves this. The EVO guys have developed a multi touch keyboard fix btw
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you obviously didn't read what I just posted then.
It cannot touch 2 different touches at one, it detects one LARGE touch when two fingers are on, and then when you "pinch" it detects the size of that LARGE touch getting bugger or smaller.

Search for "Multitouch Visible Test" in the market.
That is an app for displaying the detected finger touches.

Lennyuk said:
you obviously didn't read what I just posted then.
It cannot touch 2 different touches at one, it detects one LARGE touch when two fingers are on, and then when you "pinch" it detects the size of that LARGE touch getting bugger or smaller.
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the desire dosent have multi touch, but dual touch instead, the issues people are having with games is beacause the desire gets confused When two fingers are placed close to each other or they cross the same axis because the data points get flipped, this is because of the way dual touch works, When you touch the screen with two fingers one by one, you get three points of reference: 1) Fixed Point – location of first finger, 2) Real Point – hardware detection point when two fingers are placed and 3) Fake Point – location of second finger. Interestingly, the hardware does not ‘know’ about this position – instead it is calculated by the application.

Is this translated in a hardware level or just driver?

Lennyuk said:
you obviously didn't read what I just posted then.
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Both rude and falsely assumed.
I loaded the page a long time before you replied and only saw your reply after I had submitted mine. I edited my post immediately after seeing yours.

bedeabc said:
Both rude and falsely assumed.
I loaded the page a long time before you replied and only saw your reply after I had submitted mine. I edited my post immediately after seeing yours.
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ok then, sorry

And as mentioned you are wrong, as the desire do detect 2 points/fingers. Any multitouch test app from the market will show that.

mortenmhp said:
And as mentioned you are wrong, as the desire do detect 2 points/fingers. Any multitouch test app from the market will show that.
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no, what we have said is correct, the apps show an output but its not true multitouch.
All you have to do is try any multitouch app and do a google search to see all deivces up until now (after desire) made by HTC have dual touch, not multitouch
basically speaking it can detect certain multitouch gestures but not everything.

well i can play sonic and a load of other games and snesoid on the genisoid with run and jump buttons together, which tells me it's at least dual touch, to be honest the screen isnt really big enough to get 3 or 4 fingers on it properly and see what you are doing anyway

I will record a video of the hardware limitation of the touchscreen in HTC Desire.

lollylost100 said:
I will record a video of the hardware limitation of the touchscreen in HTC Desire.
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or just search on youtube, loads have been done already.

I am not on about the lack of multitouch, there is a bug with two points with two near x, or y, axis points; they join together for some strange reason.
Link to video: http://www.youtube.com/watch?v=noQBUDy-WCQ
This is why multitouch keyboards dont work and there are problems with the PSX4droid emulator when having both dpad and control buttons on top or both on bottom.

I read somewhere that there was code in Android for a that filtered the Droid's multitouch results, that results in the Droid not having the axis flipping issue (does still have the sticking issue when close). Is there any way this code can be implemented on the Desire?

I think a developer called Phhusion on the Acer liquid forum in Modaco solved this software wise.

mr.r9 said:
I think a developer called Phhusion on the Acer liquid forum in Modaco solved this software wise.
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NO...
i am reading the post but... it's a work around... and it is works quite well, quite...
It does not resolve the bug!

[Q] is this a general touch screen bug or is my desire not working ?

hello
i have a wird bug on my touch screen and i want to know if it is a general desire bug or a probleme with my device that i have to send back for repair ?
on magikmarker app when i press two points very quicly, my desire draw a line.
http://www.youtube.com/watch?v=pMyN822idH4
i thought maybe the app works like that.
so then i tried with swype and slideit
and there is exactly the same problem :
http://www.youtube.com/watch?v=gaPxeUqnCBc
anybody have the same problem ?
Thank you

This is a bug with all desires. They don't support true multi touch so glitches like that happen. Look for videos about desire multi touch on the YouTube.

Just tried it on mine and i don't get any lines.
not much more i can say on that really

If you get apps like visible multi touch test and use two points this will happen when you cross the axis too. The touchscreen can only support one touch. It uses an algorithm to work out where the 2nd point resides. HTC fixed this problem with new digitalisers in the stood incredible.

ste1164 said:
The touchscreen can only support one touch. It uses an algorithm to work out where the 2nd point resides. HTC fixed this problem with new digitalisers in the stood incredible.
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Ok I believe you but how come I can play games like NOVA fine using both my fingers at the same time if multitouch isn't supported? There must be some kind of multitouch or it wouldn't be possible.

owziee said:
Ok I believe you but how come I can play games like NOVA fine using both my fingers at the same time if multitouch isn't supported? There must be some kind of multitouch or it wouldn't be possible.
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He just told you how it works... You quoted his post with the answer...

Multi touch works but it's a very poor basic way of using it.

Desire doesn't got true multi-touch, it got half assed dual touch, and I couldn't play NOVA correctly because it wouldn't shoot when I wanted to if I had had my thumb on the joystick . Its because of the panel it uses and not because of software, so this is a hardware "problem"(Technically not a problem because HTC never advertised multi-touch, only pinch to zoom). Desire HD/Droid Incredible/Evo 4G uses newer and better touch panel with proper multi-touch.

[Q] Digitiser

Would changing the Desire's digitiser with the one in the Droid Incredible mean that the multi touch issue would be solved?
Thanks just curious cos they seem to be the same phone with a different screen panel.

jonmall1441 said:
Would changing the Desire's digitiser with the one in the Droid Incredible mean that the multi touch issue would be solved?
Thanks just curious cos they seem to be the same phone with a different screen panel.
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no its not that simple, although the digitizer/touch panel is at fault, you would need diffrent drivers maybe even diffrent hardware to run a diffrent touch panel .....

Thanks I was just curious. Wasn't planning on doin it to my desire

Google Maps for Mobile v5 - Desire not supported?

http://www.engadget.com/2010/12/06/google-maps-for-mobile-5-unveiled-adds-dynamic-map-drawing-and/
It seems that the desire won't be supported, but I hope that list is not final.
There are very similar devices (eg. HTC Incredible) so maybe they just forgot about the Desire

koichirose said:
http://www.engadget.com/2010/12/06/google-maps-for-mobile-5-unveiled-adds-dynamic-map-drawing-and/
It seems that the desire won't be supported, but I hope that list is not final.
There are very similar devices (eg. HTC Incredible) so maybe they just forgot about the Desire
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I think we'll see an update, just not the full feature update. Same as the Nexus 1

I think the 3D tilt view will not be fully supported on the Desire/N1 due to the multi-touch issue. The main thing is the offline caching and we will get it.

Ye only thing is the multitouch bug that will make some of the tilting quite difficult.

Yes the Nexus one and the Desire have a poor Touch Panel, so altho it will get Google maps 5 You won't be able to rotate the Maps with a gesture (Although it SHOULD be able to do a pivot gesture according to its specification), The Droid incredible has a different Touch panel, which although still only Dual touch, handles that gesture fine without buggyness.

There is no "multitouch bug", the Desire supports pinch to zoom, not multitouch.
Working as designed.

bubble said:
There is no "multitouch bug", the Desire supports pinch to zoom, not multitouch.
Working as designed.
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+1 there is no multi touch bug because the desire has dual touch not multi touch
Sent from my HTC Desire HD using Tapatalk

AndroHero said:
+1 there is no multi touch bug because the desire has dual touch not multi touch
Sent from my HTC Desire HD using Tapatalk
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There is a bug, as the Droid Incredible is only Dual touch as well but doesn't do the same thing. Just don't call it a multitouch bug but its still a bug.

AntonyStark said:
There is a bug, as the Droid Incredible is only Dual touch as well but doesn't do the same thing. Just don't call it a multitouch bug but its still a bug.
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As you said 3 posts up, the Droid has a different touch panel and has more features. Its not a bug, its a limitation. The panel does as it was advertised to do...pinch gestures.
Yes, the axes swap and the points stick together when on close x or y, but this doesn't stop it from doing its job, pinch gestures work fine with these limitations, therefore, not a bug.

The only advertised feature is pinch to zoom, which is working as designed.
Calling the lack of multitouch support a bug is the as same as calling the lack of face camera a bug... ;-)

mercianary said:
As you said 3 posts up, the Droid has a different touch panel and has more features. Its not a bug, its a limitation. The panel does as it was advertised to do...pinch gestures.
Yes, the axes swap and the points stick together when on close x or y, but this doesn't stop it from doing its job, pinch gestures work fine with these limitations, therefore, not a bug.
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But as I said in the same post, The touch panel in the desire is advertised to be able to do the gestures needed (both Pivot and rotate) and to close proximity, the phone is incapable of doing these and exhibits strange behaviours when you do them, thats bugginess to me, at worst its a defect, not a limitation.

bubble said:
The only advertised feature is pinch to zoom, which is working as designed.
Calling the lack of multitouch support a bug is the as same as calling the lack of face camera a bug... ;-)
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Its not working as designed, it was designed to do more, it cant for one reason or another, HTC messed up by putting it in the Nexus one and the Desire, thats why we have touch sensitive screen or Pitch to Zoom in brackets, but I'm talking about what the Digitizer manufacturers say it can do.
In your scenario it would be a phone having a camera and a flash in your phone, but to take a picture with a flash doesn't work, then calling it a video light....

I agree that not having real multitouch support is annoying, but you bought this device knowing this.
If you didn't know, you should probably take the habit to read some reviews before buying something...

bubble said:
I agree that not having real multitouch support is annoying, but you bought this device knowing this.
If you didn't know, you should probably take the habit to read some reviews before buying something...
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I wasn't complaining, I was just spelling out why it isn't supported, with more background. Maybe you should take the habit to read before posting something....

AntonyStark said:
I wasn't complaining, I was just spelling out why it isn't supported, with more background. Maybe you should take the habit to read before posting something....
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I was actually using the ""Impersonal You"

Where is here the problem? The list is so short that not only the Desire is missing but many other devices which also have or not any multitouch bug

The whole thing bugs me, so it must be a bug...

its so sad that desire isn't in the list ...

Calm down, someone will make it work, whether it comes to the Desire officially or not.
The Desire's touch panel has an issue where it gets confused if you cross an axis with two fingers at once.
This means the rotating gesture will not work reliably, because if you cross an axis with two fingers at the same time, the map will rotate in the wrong direction.
Everything else should work and I think the issue is a rather small one, so most likely all we need is the .apk (if it doesn't get released for the Desire anyway).

There are apps out that show you what the touch sensor is seeing, where it will register multiple touched locations, but only two actually do anything at the same time. If you put three fingers on it, it will show all three, but if you try to move, only two will show the sliders for each finger moving.
Also, if you try to use two fingers, one at 2 o'clock and one at 7 o'clock, and rotate them clockwise, when they are at the 12/6 or 9/3 axis, the circles at your fingers switch with each other and it acts up.
I agree how some see it as a bug, but I would have to say it is just a limitation due to what our device was designed with. (A black and white TV can't show color picture, it's a hardware limitation, not a bug)
I wonder if something along the lines of the hack that allows single-touch displays to be able to use dual-touch would work to allow dual-touch to use multi-touch...thereby allowing GM5 to work without issue?

find 7a screen touch points ???

tried a Multi touch test app today and it only register 2 touch points at the same time..
other phones I've had registers up to 10 multi touch points…
I actually don't have any problems with my Find 7a, but seems weird that it only registerers 2 touch point at the same time…
any one else noticed this ?

dk_iceman said:
tried a Multi touch test app today and it only register 2 touch points at the same time..
other phones I've had registers up to 10 multi touch points…
I actually don't have any problems with my Find 7a, but seems weird that it only registerers 2 touch point at the same time…
any one else noticed this ?
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screenshot gesture requires 3 fingers slide, which works fine for me so i don't think it only recognize 2 touch points.

dk_iceman said:
tried a Multi touch test app today and it only register 2 touch points at the same time..
other phones I've had registers up to 10 multi touch points…
I actually don't have any problems with my Find 7a, but seems weird that it only registerers 2 touch point at the same time…
any one else noticed this ?
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Click to collapse
It's just the multi-finger gestures option of ColorOS interfering with your test app.
Disable all multi-finger gestures in the system settings and try your multi-touch test again.
Sent from my X9006 using XDA Premium 4 mobile app

multitouch
Multitouch works perfect after disabling all the multi touch system setting. Also it supports more than 10 fingers