public async Task <string> GetPicMainColor(StorageFile storageFile, StackPanel StatisticsGrid)
{
WriteableBitmap wb = new WriteableBitmap(1600, 1600);
string mainColorHex = "#000000";
StorageFile file = storageFile;
if (file != null)
{
// Set the source of the WriteableBitmap to the image stream
using (IRandomAccessStream fileStream = await file.OpenAsync(FileAccessMode.Read))
{
try
{
await wb.SetSourceAsync(fileStream);
}
catch (TaskCanceledException)
{
// The async action to set the WriteableBitmap's source may be canceled if the user clicks the button repeatedly
}
}
mainColorHex = ColorMatch.GetMajorColor(wb, StatisticsGrid).ToString(); //这个颜色带不透明度的。。
}
return(mainColorHex);
}