Button on a Long Press

[pavankumar kavvuri]

I need to send the series of same byte number upon long pressing the button until I release it.

But using long press event can only send one of it. I hope that using clock timer may yield any desired result. I am still working on that.

I hope that you people could fix this.

Thanks in advance!!!

Regards,

PavanKumar k

[Scott Ferguson]

There is nothing to fix.

The event is intended to trigger once.

Your suggestion of using a Clock Timer to continue processing is right on.

That is what I would do as well.

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sf

[Abraham Getzler]

On the long press, set a global variable to how many times your byte value should be sent,

and start the clock timer.

Each time the clock fires, check if the global is > 0.

If >0, subtract 1 from it and emit a byte.

If <= 0, disable the timer.

ABG

[pavankumar kavvuri]

Sir, I have implemented what you have said. Although I discovered a new thing for me but I didn't get what I desire. My doubt is, can we calculate the time we hold the button in App inventor. If it is so my problem is solved. Unlike you have said, I don't need to declare in prior how many times it should looping ! since I am working with stock of buttons, others don't respond til the loop ends.

I hope you understand. I just attached the file.

Thanks in advance!!!

Regards,

PavanKumar K

[Abraham Getzler]

To get tight timing some people use sprites on a canvas

for buttons, to tale advantage of the touch up and

touch down events.  

If you prefer buttons, there is another alternative to

long press.  If you set the text of the button alternately

to START or STOP, you can use the button to do both,

changing the button text after each click.

sample blocks:

when btnStartSTop.Click,

if btnStartStop.Text = "Start" then

   call Start 

   set btnStartStop.Text to "Stop"

ELSE

   call Stop

   set btnStartStop.Text to "Start"

end if

ABG

[Abraham Getzler]

If you use either of my ideas in my last post,

you don't need the global time counter.

Just let the clock repeat until you need to stop it.

ABG

[pavankumar kavvuri]

But how could I calculate the time I hold the button. 

My idea is to set the timer to the time I hold each button.

Thank you!!

Regards,

PavanKumar K

[Abraham Getzler]

See attached sample.

When Button1 TouchDown, I store the current

milliseconds since 1970 in Label1.Text.

When Button1.TouchUp, I subtract the current

milliseconds since 1970 from the Label1.Text value,

to get the milliseconds that Buttton1 was held down,

and store it in Label1.Text.

Button2 and Label2 are not wired, just to 

remind us that we can do this with multiple buttons,

though not necessarily simultaneously.

For your app, you would use a global variable or two

for the temporary interval value.

ABG