Hi,
In my application I load images from url and insert them into a tableView row. I use loadRemoteImage function only when image doesn’t exist in TemporaryDirectory. Everything is ok, but when I run my application on phone ( I tested on Xperia Z2, Xperia S, Lenovo Vibe Z ) tableView doesn’t scroll smoothy, there is minimal lag when new row is rendered.
How to eliminete this?
Version of Corona: 2014.2393 (2014.8.5)
This is the code:
local function onRowRender( event ) local is\_image\_from\_temp; local row = event.row local params = event.row.params local function networkListener(event) if ( event.isError ) then print ( "Network error - download failed" ) else event.target.x = display.contentCenterX event.target.y = row.contentHeight \* 0.33 row:insert(event.target); end end -- Create name of file filename = params.image filename = string.sub(filename,-11) -- Open Temporary Directory local path = system.pathForFile( filename, system.TemporaryDirectory ) local fhd = io.open( path ) -- Determine if file exists if fhd then -- If image exists - load . row.image = display.newImage( filename ,system.TemporaryDirectory) row.image.x = display.contentCenterX row.image.y = row.contentHeight \* 0.33 is\_image\_from\_temp = 1 fhd:close() else -- If not - download. display.loadRemoteImage(params.image, "GET", networkListener, filename, system.TemporaryDirectory) is\_image\_from\_temp = 0 end row.text = display.newText(params.label, 0, 0, native.systemFont, 18) row.place = display.newText(params.place, 0, 0, native.systemFont, 18) row.info = display.newText(params.message, 0, 0, display.contentWidth, 0, native.systemFont, 14) row.text:setFillColor( 0.5, 0.5, 1.0 ) row.info:setFillColor( 0, 0, 0 ) row.place:setFillColor( 0, 0, 0 ) row.text.x = display.contentCenterX row.text.y = row.contentHeight \* 0.06 row.info.x = display.contentCenterX row.info.y = row.contentHeight \* 0.8 row.place.x = display.contentCenterX row.place.y = row.contentHeight \* 0.6 if(is\_image\_from\_temp == 1)then row:insert(row.image) end row:insert(row.info) row:insert(row.text) row:insert(row.place) end local function onRowTouch( event ) if("tap" == event.phase)then local options = { effect = "fade", time = 300, params = { info = event.target.params.message, image = event.target.params.image, place = event.target.params.place, label = event.target.params.label } } composer.gotoScene("info",options) end if("swipeRight" == event.phase)then sharePanel:show() end if("swipeLeft" == event.phase)then sharePanel:hide() end end local tableView1 = widget.newTableView({ width = display.contentWidth, height = display.contentHeight; backgroundColor = { 0.6 }, --noLines = true, onRowRender = onRowRender, onRowTouch = onRowTouch, isBounceEnabled = true, friction = 0.980, })
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