iphone/ipad - 如何在 CALayer 中绘制 CGRect 图像视图？

Question

我正在尝试在 CGRect 中从 ipad 相机捕获图像并将其添加到 CALayer 中，但它无法正常工作。它只显示蓝屏。

请任何人帮助我...

Answer 1

CALayer *sublayer = [CALayer layer];

sublayer.backgroundColor = [UIColor blueColor].CGColor;

sublayer.shadowOffset = CGSizeMake(0, 3);

sublayer.shadowRadius = 5.0;

sublayer.shadowColor = [UIColor blackColor].CGColor;

sublayer.shadowOpacity = 0.8;

sublayer.frame = CGRectMake(30, 30, 128, 192);

sublayer.contents = (id) [UIImage imageNamed:@"BattleMapSplashScreen.jpg"].CGImage;

[self.view.layer addSublayer:sublayer];