How do you set Backpressed Screen once, twice, or more until close application?

MIT App Inventor Help
1

Help me, I want to make Screen when backpressed once=clear all, twice=go to other screen, and 3 times or more=close the app..

2

How would anyone know that, let alone understand it?

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3

Perhaps code like this will work. The code works fine on my Samsung cell and LG cell to post 1,2,3 to a Label and then start all over again. :wink:

backpressedTImes
Adapt the code to clear all, go to another screen and close app instead of posting 1,2,3

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4

How would you know when the user has stopped pressing Back, to settle on a count and act on that count?

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5

I guess you could introduce a clock timer (say 2000ms), which gets the click number value when it fires?

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6

image
image627×606 39.7 KB

I try this, but the clock didn't work. can anyone help?

7

grafik
grafik1787×891 109 KB

backPressed.aia (7.9 KB)

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8

Here's my take, no counter and no clock:
back_counter.aia (3.7 KB)
Dcreen1
sample run
Screen2

Note: This only works when built, not in the Companion.

Also note how I do not open Screen1, only close Screen2 to return to Screen1.

There are more advanced ways to switch screens.

1 Like
9

Totally nice, it worked when i used this
image

and then at the screen1, when backpressed-close the application

Thank's all for your knowledge to guide me :pray:

10

Let me suggest you to switch screens correctly to avoid unexpected results...

Taifun

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