我找到了一个示例,但是此example 使用System.Windows类的“ Int32Rect”,我们无法将此库用于android或ios
对于位图,我使用System.Drawing.Common
public static System.Drawing.Bitmap BitmapSourceToBitmap2(BitmapSource srs)
{
int width = srs.PixelWidth;
int height = srs.PixelHeight;
int stride = width * ((srs.Format.BitsPerPixel + 7) / 8);
IntPtr ptr = IntPtr.Zero;
try
{
ptr = Marshal.AllocHGlobal(height * stride);
srs.CopyPixels(new Int32Rect(0, 0, width, height), ptr, height * stride, stride);
using (var btm = new System.Drawing.Bitmap(width, height, stride, System.Drawing.Imaging.PixelFormat.Format1bppIndexed, ptr))
{
// Clone the bitmap so that we can dispose it and
// release the unmanaged memory at ptr
return new System.Drawing.Bitmap(btm);
}
}
finally
{
if (ptr != IntPtr.Zero)
Marshal.FreeHGlobal(ptr);
}
}
那么,如何将ImageSource转换为用于跨平台项目的Bitmap?
我尝试关注guide,但其中包含的信息不完整,我试图自行填写低估的内容
该项目甚至可以编译!但是,当我尝试从GetBitmapFromImageSourceAsync(…)方法获取结果时,应用程序冻结(无限循环)
var test = GetBitmapFromImageSourceAsync(image, Android.App.Application.Context);
var bitmap = test.Result;
请查看为什么它不起作用?或者,请给我一个指向您项目的链接,我会解决的