我正在尝试捕获 a 的内容WebView
并将其保存为图像。这是我现在的代码(cv
是网络视图):
[cv lockFocus];
NSBitmapImageRep *rep = [[NSBitmapImageRep alloc] initWithFocusedViewRect:[cv bounds]];
[cv unlockFocus];
NSData *data = [rep TIFFRepresentation];
[data writeToFile:[[save URL] path] atomically:NO];
我得到的只是一张大小正确的灰色图像。我究竟做错了什么?