Android Question Draw a line between 2 points

[extravert]

I want to select 2 points on my screen and have my app connect them with a line.
i have no idea where to start....

 

[sorex]

you could start by using the search at the top right of the page?

first result of the search > https://www.b4x.com/android/forum/threads/drawing-lines-problem.10746/#content

 

[eurojam]

this is very little information that you provide to help you:
1. rule: the more information - the better the help will be
for exmaple: two points on the screen means what?: Points on a Map, points on a canvas - this is something where you can draw lines on?

best regards
stefan

 

[Tayfur]

Global
private X1 as float=0
private Y2 as float=0
private Fisrttouch as boolean=True


Private Sub YourPanel_Touch (Action As Int, X As Float, Y As Float)
  
if Fisrttouch=true then
   X1=X
   Y1=Y
   Fisrttouch=false
else
    Dim cnv As Canvas
    cnv.Initialize(YourPanel)
    cnv.DrawLine(x1,y1,X,Y,Colors.Red, 5dip) '5dip stoke width
   Fisrttouch=true
  end if

end sub

 

[sorex]

Fisrttouch > Firsttouch ?

 

[Tayfur]

Fisrttouch > Firsttouch ?

I am not english,

Fisrttouch is correct. Because "Fisrttouch" is variable name.

 

[Jaames]

Fisrt to First so Fisrttouch becomes Firsttouch. , that's what @sorex is saying

 

[Tayfur]

No no ... @Jaames

"Fisrttouch becomes Firsttouch." is wrong

"Fisrttouch" becomes "Firsttouch" with quick write from the keyboard

 

[extravert]

Many thanks.
I am now slowly moving in the right direction