Are all touch-screens on modern devices multitouch capable on hardware level (if software supports it)?
If not than how to detect if touchscreen screen by itself is multitouch or not?
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A lot of the very cheap, non-brand name devices come with resistive touch screens, instead of the capacitive touchscreens used on the higher-end devices. Resistive screens very rarely support multi-touch.– GAThrawnApr 5, 2012 at 15:23
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2 Answers
Are all touch-screens on modern devices multitouch capable on hardware level (if software supports it)?
This is more or less impossible to answer without spec sheets for every Android device that has ever been created (within whatever timeframe you consider "modern"). Very broadly speaking, devices from major manufacturers over the last several years will typically support multitouch to some degree, but even that overall degree of support can vary between devices.
If not than how to detect if touchscreen screen by itself is multitouch or not?
There are a bunch of apps for this. I'd say pick one and try it. If you want to try to verify the results, pick several and try them all.
answered Apr 5, 2012 at 14:55
If you want to check programmatically, checking the system features via the PackageManager object works, as far as i can tell for my device. This method doesn't give the exact supported number, but rather a categorisation as follows:
- TOUCHSCREEN_MULTITOUCH JAZZHAND (tracks 5 or more touches fully independently)
- TOUCHSCREEN_MULTITOUCH DISTINCT (tracks 2 or more touches fully independently)
- TOUCHSCREEN_MULTITOUCH (basic 2 finger gesture compatibility)
Depending on your task as hand, this might be sufficient enough, however GAThrawn's comment regarding low-tier phones makes me worry if it can be relied on that all those vendors actually set those values correctly before deploying the software.
Other than that, i don't know any way currently (but would also like to learn about one) - apart from maybe having the users test their devices as your app starts up, when the detected api level is less than 11 for instance.
