Hello,
How to load and display an image in an ImageView from a server, the simplest.
I finf different ways in various demos, FlickrViewver, FlickrViewver2, HttpUtilsExample. etc and I'm lost (different libraries etc..).
I'm looking for the easiest way to display this "http://ciginfo.alwaysdata.net/img_sites/Img1.jpg" image in a ImageView.
thank you
Add a reference to HttpUtils2 library. Create a layout file with ImageView1:
This is the simplest code:
B4X:
Sub Globals
Dim ImageView1 As ImageView
End Sub
Sub Activity_Create(FirstTime As Boolean)
Activity.LoadLayout("1")
Dim job As HttpJob
job.Initialize("image", Me)
job.Download("http://ciginfo.alwaysdata.net/img_sites/Img1.jpg")
End Sub
Sub JobDone(Job As HttpJob)
If Job.Success Then
ImageView1.SetBackgroundImage(Job.GetBitmap)
End If
Job.Release
End Sub
However it is better to cache the downloaded image:
B4X:
Sub Process_Globals
Private bmp As Bitmap
End Sub
Sub Globals
Dim ImageView1 As ImageView
End Sub
Sub Activity_Create(FirstTime As Boolean)
Activity.LoadLayout("1")
If bmp.IsInitialized = False Then
Dim job As HttpJob
job.Initialize("image", Me)
job.Download("http://ciginfo.alwaysdata.net/img_sites/Img1.jpg")
End If
End Sub
Sub JobDone(Job As HttpJob)
If Job.Success Then
bmp = Job.GetBitmap
ImageView1.SetBackgroundImage(bmp)
End If
Job.Release
End Sub
Sub Activity_Resume
If bmp.IsInitialized Then ImageView1.Bitmap = bmp
End Sub