Calling screenshot.capture() on Web returns null

VincentMTAC commented 1 year ago

Context Trying to make a screenshot on Web using Flutter 3.7.10 `


flutter doctor -v
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• No issues found!



- Reproduce steps 
Calling 
`var capture = await screenshotController.capture();`
returns null. 

- Workaround 
Call screenshotController.captureAsUiImage with a Duration(milliseconds: 50) 

My guess is that calling : 
`        ui.Image? image = await captureAsUiImage(
          delay: Duration.zero,
          pixelRatio: pixelRatio,
        );
`
Here https://github.com/SachinGanesh/screenshot/blob/master/lib/screenshot.dart#L49

While it is said: 
`  Future<ui.Image?> captureAsUiImage(
      {double? pixelRatio: 1,
      Duration delay: const Duration(milliseconds: 20)}) {
    //Delay is required. See Issue https://github.com/flutter/flutter/issues/22308
`
But I let you decide whether it is a bug or not

vborbely commented 2 months ago

I found that on Web, you have to call Uint8List? tempImage = await screenshotController.capture() with a Duration = 0 , like:

Uint8List? tempImage = await screenshotController.capture( delay: const Duration(milliseconds: 0) );

Deishelon commented 4 weeks ago

+1

Using zero delay does not work for me

SachinGanesh / screenshot

Calling screenshot.capture() on Web returns null #126