From Newsgroup: comp.mobile.android


How to add progress bar to this fun to show procent loading?

fun doHttpsConnectUrlGetImage02(aimageView: ImageView?, aurl: String) {

var httpsURLConnection : HttpsURLConnection
val zimageView = aimageView.toString()
Log.i("ppp", "aurl -> " + aurl + " zimageview -> " +zimageView)
Log.i("ppp", "fun doHttpsConnectUrlGetImage02(aimageView:
ImageView, aurl: String ) {")

val zurl = "$aurl?t=${System.currentTimeMillis()}"

var zbitmap04 : Bitmap? = null
var ztimer = 0

CoroutineScope(Dispatchers.IO).launch {
try {
val url = URL(zurl)
httpsURLConnection = url.openConnection() as HttpsURLConnection
//
httpsURLConnection.setRequestProperty("Cache-Control", "no-cache")
// httpsURLConnection.defaultUseCaches = false
// httpsURLConnection.setUseCaches(false)

httpsURLConnection.doInput
httpsURLConnection.connect()

val inputStream = httpsURLConnection.getInputStream()

ztimer++

Log.i("ppp", "ztimer -> " + ztimer)

zbitmap04 = BitmapFactory.decodeStream((inputStream))

httpsURLConnection.disconnect()
} catch ( _ : Exception ) {
}

// Update UI for download is successful
withContext(Dispatchers.Main) {
aimageView?.setImageBitmap(zbitmap04)
}
}
}
--- Synchronet 3.22a-Linux NewsLink 1.2

From Newsgroup: comp.mobile.android

Jakub, 2026-06-01 15:00:

How to add progress bar to this fun to show procent loading?

[...]

val inputStream = httpsURLConnection.getInputStream()

ztimer++

Log.i("ppp", "ztimer -> " + ztimer)

zbitmap04 = BitmapFactory.decodeStream((inputStream))

Do not use BitmapFactory.decodeStream() but download the stream
"manually" and then decode the bitmap after downloading. However this
still leaves a problem unsolved: you don't know how many bytes will be
sent on the stream - but this information would be required to determine
the progress.

So in addition you need to analyse the HTTP response headers for the URL
to see if there is any Content-length field present.
--
Arno Welzel
https://arnowelzel.de
--- Synchronet 3.22a-Linux NewsLink 1.2