我将图像设置为背景颜色，以便在图像上绘制一些线条。但是现在我无法使图像适合屏幕......我是swift的新手。
我尝试将此视图的ContentMode设置为AspectFit，ScaletoFit等，但它并没有影响背景颜色图像的显示。
有人可以帮忙吗？
这是我在 int recvsize = 0;
unsigned char tmpsize;
int index = 0;
unsigned char *buffer;
while (1) {
recvsize = recv(server, &tmpsize, sizeof(unsigned char), 0); // every packet starts with one byte where is its length
if (recvsize > 0 ) {
buffer = malloc(tmpsize * sizeof(unsigned char)); //memory allocation according to the size of packet
buffer[0] = tmpsize--; //get back the size value to the buffer
recvsize = 0;
do { //loop over and over until you do not have all bytes of the packet
recvsize = recv(server, &buffer[++index], tmpsize, 0);
if (recvsize == 0)
break;
tmpsize -=recvsize;
index += recvsize;
} while (tmpsize != 0);
}
sleep(50);
}
中使用的代码：
UIViewController绘图代码：
self.view.backgroundColor = UIColor(patternImage: (UIImage (named: "Map"))!)
}