GuideDemo - 优化遮罩效果 - sunljz

sunli · sunli · commit 6467cb786cc4 · 2015-07-27T19:24:14.000+08:00
diff --git a/GuideDemo/GuideDemo/UIImage+Mask.m b/GuideDemo/GuideDemo/UIImage+Mask.m
@@ -14,7 +14,7 @@ - (UIImage *)maskImage:(UIColor *)maskColor
 {
     CGRect rect = CGRectMake(0, 0, self.size.width, self.size.height);
     
-    UIGraphicsBeginImageContext(rect.size);
+    UIGraphicsBeginImageContextWithOptions(rect.size, NO, 0);
     
     CGContextRef context = UIGraphicsGetCurrentContext();
     CGContextTranslateCTM(context, 0, rect.size.height);

Original file line number	Diff line number	Diff line change
`@@ -14,7 +14,7 @@ - (UIImage )maskImage:(UIColor )maskColor`
`14`	`14`	`{`
`15`	`15`	`CGRect rect = CGRectMake(0, 0, self.size.width, self.size.height);`
`16`	`16`
`17`		`- UIGraphicsBeginImageContext(rect.size);`
	`17`	`+ UIGraphicsBeginImageContextWithOptions(rect.size, NO, 0);`
`18`	`18`
`19`	`19`	`CGContextRef context = UIGraphicsGetCurrentContext();`
`20`	`20`	`CGContextTranslateCTM(context, 0, rect.size.height);`