pressure

Android - Detect Touch Pressure on capacitive touch screen?

由 安稳与你 提交于 2020-04-10 03:34:33
问题 I've heard of: MotionEvent e; float press = e.getPressure(...); But this only returns 0 for no touch, and 1 when my finger touches the screen. Is it possible to find a value for the amount of pressure your finger is putting on the screen with touch capacitive screens? Or is my hunch correct that this will only work with resistive screens..? 回答1: MotionEvent().getPressure(i) should return a value between 0 and 1 based on the "pressure" placed on the screen. In reality for capacitive screens it

getPressure always returning 1.0

由 喜欢而已 提交于 2019-12-31 04:46:07
问题 Does anyone have any idea why getPressure() returns always 1.0 ? Here is my code: @Override public boolean onTouchEvent(MotionEvent event) { super.onTouchEvent(event); System.out.println(event.getPressure()); return true; } 回答1: Does anyone have any idea why getPressure() returns always 1.0? The typical touchscreen / input device has no way to measure pressure. You either don't press and get no touch event or you press and get a touch event with value 1. 回答2: https://groups.google.com/forum/#

Touch devices (iOS, Android)

由 放肆的年华 提交于 2019-12-19 09:25:16
问题 Are there any scale on the touch inputs? I know there is sensibility settings to say if you touch or not, but does it has a scale for hard pressure and low pressure too? If so, what scale is it? 0 to 1 or 0-255 or what possiblities? 回答1: Well, that entirely depends on the API. Android, for example, has a getPressure() accessor in MotionEvents that returns a float between 0.0f and 1.0f, but the actual granularity of your result obviously depends on the hardware - if the screen can only detect

Tap pressure strength detection using CPBPressureTouchGestureRecognizer

由 ╄→гoц情女王★ 提交于 2019-12-18 13:38:10
问题 it's working great with one UIButton: – (void) viewDidLoad { [super viewDidLoad]; CPBPressureTouchGestureRecognizer* recognizer = [[CPBPressureTouchGestureRecognizer alloc] initWithTarget:self action:@selector(A_button:)]; [A_button addGestureRecognizer: recognizer]; [recognizer release]; } - (void) A_button: (CPBPressureTouchGestureRecognizer*) recognizer { [pan_A setGain:recognizer.pressure]; [pan_A] play; } i tried to use more but only the second one is working: - (void) viewDidLoad {

UIButton long press with finger stationary

由 老子叫甜甜 提交于 2019-12-18 07:05:10
问题 In my project I have the need to use a UIButton (or another component) to handle events using long press. Let me explain, I should make that mind I hold down the button a timer to count the seconds and release to pressure stop, I tried with the management of UILongPressGestureRecognizer but is not the case because I recall the event when the button is held down but only if I move my finger, but I wish the timer went away and counted all the time in which the button is held down (with your

how to detect screen casters android, detect tap pressure

由 丶灬走出姿态 提交于 2019-12-12 14:15:32
问题 I developed an app that is fun to play with but there are some naughty people who are vandalizing fun of other people by using different type of screen casters and then playing with automated scripts and cheating users. here is a link to a very famous screen caster. but is there any way to detect it? I think I have read somewhere that I can get tap pressure on accelerometer in android. please help 回答1: Sample Application package com.pressure.detection; import android.app.Activity; import

How do I get android paint(stylus) size?

由 拟墨画扇 提交于 2019-12-12 06:29:34
问题 I am developing an App that need to detect the stylus's size, for instance, if I use my hand(relatively wide) to draw, return null, if I use the stylus（relatively small） to draw, execute draw.Point method. I have no idea how to detect this. Please for help thanks. My code list as below. public PaintView(Context context) { super(context); paint=new Paint(Paint.DITHER_FLAG); bitmap = Bitmap.createBitmap(MainActivity.widthPixels, MainActivity.heightPixels, Bitmap.Config.ARGB_8888); canvas=new

Will redis incr command can be limitation to specific number?

由 做~自己de王妃 提交于 2019-12-10 11:58:10
问题 In our project, we want to use redis's incr command to do limitation to the storage. For example, for the specific goods A, We want to sell only ten of them during the promotion. So we planned to use incr command to add the storage value from 0 to 10. In theory, this plan is no problem with this scenario. Before start, we did a performance test on the incr command, the result appeared that using incr to do limitation to the goods storage may be unrealiable. The testing code below： static int

android find pressure on screen

由 一个人想着一个人 提交于 2019-12-04 02:29:41
问题 I would like to roughly understand the amount of pressure the finger presses on the capacitive screen on android. My idea is to get the area covered by the finger when it is touched (maybe some extra parameters to get it more accurate, but thats the main idea). So, is there any way to find the are covered? (for example get the number of pixels covered). 回答1: There is only MotionEvent.getPressure() (which you probably already found). I doubt that there is something that reports how many pixel

Best way to read from a sensors that doesn't have interrupt pin and require some time before the measure is ready

由 跟風遠走 提交于 2019-12-01 11:37:05
I'm trying to interface a pressure sensor (MS5803-14BA) with my board (NUCLEO-STM32L073RZ). According to the datasheet (page 3), the pressure sensor requires some milliseconds before the measurement is ready to be read. For my project, I would be interested in the highest resolution that requires around 10 ms for the conversion of the raw data. Unfortunately, this pressure sensor doesn't have any interrupt pin that can be exploited to see when the measurement is ready, and therefore I temporarily solved the problem putting a delay after the request of new data. I don't like my current solution
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