iOS Question How to set a background image on a B4XPages

G

giagia

Member
Licensed User
is possible to set a background image on a B4XPages ? what is the code without use designer? in B4a is Activity.SetBackgroundImage(LoadBitmapSample(File.DirAssets,"homepage.png,width,heigth)
 
Sort by date Sort by votes

Erel

B4X founder
Staff member
Licensed User
Longtime User
giagia said:
in B4a is Activity.SetBackgroundImage(LoadBitmapSample(File.DirAssets,"homepage.png,width,heigth)
Click to expand...
Not good. Don't write platform specific code unless you must.

The correct way to do it is to add an ImageView to the layout, anchored to all sides and set the image. You can then just copy the view between the layout files (in the different platforms).
 
Upvote 0
G

giagia

Member
Licensed User

Erel can you post an code example ? Im not using the designer to create a layout
 
Upvote 0
G

giagia

Member
Licensed User
Erel said:
This is a mistake in B4A, a very big mistake in B4i and a huge mistake if you are building cross platform solutions.
Many things will become very complicated.

Start with B4J / B4i resize event video tutorial: https://www.b4x.com/etp.html
Click to expand...
I need to change background image when I have same conditions. For this reason I can't use Visual designer to set a fix image.
 
Upvote 0

AnandGupta

Expert
Licensed User
Longtime User
I think you can easily change the image on condition once you set the image view in designer.

Regards

Anand
 
Upvote 0

Semen Matusovskiy

Well-Known Member
Licensed User
If you want to set 'solid' background, you need ImageView (with lowest z-order).

But if you need a pattern (repeated image), you can set it like color.
B4X: 
Dim nativeObjectPattern As NativeObject
nativeObjectPattern = nativeObjectPattern.Initialize ("UIColor").RunMethod ("colorWithPatternImage:", Array (LoadBitmap (File.DirAssets, "background.jpg")))
Dim nativeObjectRoot As NativeObject = Root
nativeObjectRoot.SetField ("backgroundColor", nativeObjectPattern)

IMO, to make a code more readable, platform specific code is better to hide in own b4xlib.
 
Upvote 0
You must log in or register to reply here.

Similar Threads

  • Question
iOS Question B4xFloatTextLabel setting appearance by code
Replies
9
Views
690
Gianni Sassanelli
Games [XUI2D] Parallax Background
Replies
0
Views
3K
Erel
W
  • Question
iOS Question How to set B4XFloatTextField background color to transparent?
Replies
3
Views
822
WhiteWizard
W
D
  • Question
iOS Question CustomListView background images
Replies
1
Views
1K
Erel
  • Question
iOS Question white background
Replies
1
Views
729
Erel
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…