Android Question How do i implement fill imageview to imagedownloader?

Reminisce · Feb 11, 2020

I needed to use the "FILLIMAGEVIEW" and the Roundimage in my imagedownloader, so i used two different imagedownloader services instead, i dont want to use this technique is there a way i can incorporate the 2?
using

FILLIMAGEVIEW:

Sub FillImageToView(bmp As B4XBitmap, ImageView As B4XView)
    Dim bmpRatio As Float = bmp.Width / bmp.Height
    Dim viewRatio As Float = ImageView.Width / ImageView.Height
    If viewRatio > bmpRatio Then
        Dim NewHeight As Int = bmp.Width / viewRatio
        bmp = bmp.Crop(0, bmp.Height / 2 - NewHeight / 2, bmp.Width, NewHeight)
    Else if viewRatio < bmpRatio Then
        Dim NewWidth As Int = bmp.Height * viewRatio
        bmp = bmp.Crop(bmp.Width / 2 - NewWidth / 2, 0, NewWidth, bmp.Height)
    End If
    ImageView.SetBitmap(bmp.Resize(ImageView.Width, ImageView.Height, True))
    
End Sub

AND

CODE TO SET ROUND BITMAP:

            nativeme.InitializeContext
            Dim bm As Bitmap
            bm.Initialize3(bmp)
            Dim bordercolor,borderwidth As Int
            bordercolor = Starter.colourpurple
            borderwidth = 0
    
            Dim bm1 As Bitmap = nativeme.RunMethod("getRoundBitmap",Array(bm,bordercolor, borderwidth))

Doesnt work, one works and the other doesnt, how do i use both?

DOE

Erel · Feb 12, 2020

Truth is that there is no reason to use ImageDownloader.

It was useful before resumable subs where available and managing the async state was much more difficult.

See the DownloadImage example here and modify it as you like: https://www.b4x.com/android/forum/threads/b4x-okhttputils2-with-wait-for.79345/#content

Reminisce · Feb 12, 2020

Erel said:
Truth is that there is no reason to use ImageDownloader.

It was useful before resumable subs where available and managing the async state was much more difficult.

See the DownloadImage example here and modify it as you like: https://www.b4x.com/android/forum/threads/b4x-okhttputils2-with-wait-for.79345/#content

Thank you erel! I will check it out.

You are amazing, I got what i needed.

B4X:

Sub DownloadImage(Link As String, iv As ImageView)

   Dim j As HttpJob

   j.Initialize("", Me)

   j.Download(Link)

   Wait For (j) JobDone(j As HttpJob)

   If j.Success Then

     iv.Bitmap = j.GetBitmap

   End If

   j.Release

End Sub

For learning sake, does the above code mean we can download and show an image directly inside an imageview without the hassle of using "Outputstream"?

Erel · Feb 13, 2020

True.

Tip: in most cases it is better to use LoadBitmapResize or Job.GetBitmapResize in this case.

Otherwise you can inadvertently load huge images and run out of available memory.

Reminisce · Feb 13, 2020

Oh,

Erel said:
True.

Tip: in most cases it is better to use LoadBitmapResize or Job.GetBitmapResize in this case.

Otherwise you can inadvertently load huge images and run out of available memory.

You're a blessing man, Thanks alot.

Android Question How do i implement fill imageview to imagedownloader?

Reminisce

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Erel

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Reminisce

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Erel

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Reminisce

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