iOS Question What is wrong with the B4i code of this class

hatzisn

Expert
Licensed User
Longtime User
Hi everybody,

I have posted this post in the forum but I suppose I have posted in the wrong forum since I also want some help.
https://www.b4x.com/android/forum/t...for-b4i-code-is-ready-but-not-working.108599/

What is wrong with the code in CreateStep sub and the same code works for Android but not for iOS (it doesn't draw the picture you see in the previous link but no errors exist in the IDE).

Thanks in advance
 
Sort by date Sort by votes

hatzisn

Expert
Licensed User
Longtime User
You are right. My mistake... Please delete the post in b4i libraries forum as I cannot.
Here is a project demonstrating the non-working class in b4i. If you migrate the project to B4A the same code works perfectly (as seen in the other - to be deleted - post).
 

Attachments

  • wn.zip
    64.4 KB · Views: 249
Upvote 0

Erel

B4X founder
Staff member
Licensed User
Longtime User
1. You should never use percentage units outside of the resize event:
B4X: 
    p.Height = 100%y
   p.Width = 100%x
Worth watching this video tutorial: https://www.b4x.com/etp.html?vimeography_gallery=1&vimeography_video=255731307

2. This is not needed:
B4X: 
   #if b4a
       lNext.TextSize = iNavFontSize
       lBack.TextSize = iNavFontSize
       lExplain.TextSize = ExplanationFontSize
       lNext.Typeface = Typeface.DEFAULT_BOLD
       lBack.Typeface = Typeface.DEFAULT_BOLD
       lExplain.Typeface = Typeface.DEFAULT
       lExplain.SingleLine = False
   #else if b4i
   lNext.Font = lNext.Font.CreateNewBold(iNavFontSize)
   lBack.Font = lBack.Font.CreateNewBold(iNavFontSize)
   lExplain.Font = lBack.Font.CreateNew(ExplanationFontSize)
All Labels should be converted to B4XView and you should use XUI.CreateFont.

3. You should use B4XCanvas instead of Canvas.
4. Make sure to call B4XCanvas.Invalidate when done drawing.
5. Make sure to call B4XCanvas.Release when done with the canvas.
6. It is better to reuse the canvases instead of creating new ones each time.
 
Upvote 0

hatzisn

Expert
Licensed User
Longtime User
Upvote 0
You must log in or register to reply here.

Similar Threads

C
  • Question
iOS Question [Solved] b4i Bridge cannot be compiled (Error: security: SecKeychainItemImport: MAC verification failed during PKCS12 import (wrong password?))
Replies
15
Views
7K
Erel
  • Article
Share My Creation [B4X] B4X Pleroma - open source client for Mastodon / Pleroma social networks
Replies
13
Views
18K
Erel
  • Locked
  • Article
Android Tutorial [B4X] [B4XPages] What exactly does it solve?
2
Replies
24
Views
38K
Erel
  • Article
B4J Library [B4X] [XUI] xChart Class and b4xlib
33 34 35
Replies
685
Views
201K
klaus
  • Locked
  • Article
B4A Class [class][B4X] Google OAuth2
2
Replies
24
Views
39K
Erel
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…