处理了文字在高清屏幕失真的问题

Author: 沙少盼

SPGuidePage/GuideCoverView.m

@@ -258,14 +258,26 @@ - (void)layoutTitleView:(UILabel *)lab LoaderItem:(LoaderItemModel *)model dista
     }
 
 }
-- (UIImage*) imageWithUIView:(UIView*) view
+//把其他控件都转成image
+- (UIImage*) imageWithUIView:(UIView*) v
 {
-    UIGraphicsBeginImageContext(view.bounds.size);
-    CGContextRef ctx = UIGraphicsGetCurrentContext();
-    [view.layer renderInContext:ctx];
-    UIImage* tImage = UIGraphicsGetImageFromCurrentImageContext();
+    //method 1:高清屏幕，文字会失真
+//    UIGraphicsBeginImageContext(view.bounds.size);
+//    CGContextRef ctx = UIGraphicsGetCurrentContext();
+//    [view.layer renderInContext:ctx];
+//    UIImage* tImage = UIGraphicsGetImageFromCurrentImageContext();
+//    UIGraphicsEndImageContext();
+//    return tImage;
+    
+    //method 2：处理了失真问题
+    CGSize s = v.bounds.size;
+    // 下面方法，第一个参数表示区域大小。第二个参数表示是否是非透明的。如果需要显示半透明效果，需要传NO，否则传YES。第三个参数就是屏幕密度了
+    UIGraphicsBeginImageContextWithOptions(s, NO, [UIScreen mainScreen].scale);
+    [v.layer renderInContext:UIGraphicsGetCurrentContext()];
+    UIImage*image = UIGraphicsGetImageFromCurrentImageContext();
     UIGraphicsEndImageContext();
-    return tImage;
+    return image;
+    
 }
 - (void)removeAllSubLayers{
     for (CALayer *layer in self.layer.sublayers) {

SPGuidePage/HighLightRegionModel.h

@@ -8,12 +8,12 @@
 
 #import <Foundation/Foundation.h>
 #import <CoreGraphics/CoreGraphics.h>
-
+//镂空形状
 typedef NS_ENUM(NSInteger,BezierPathType) {
-    Circle = 1,
-    Oval,
-    RoundedRect,
-    DottedLineRoundedRect
+    Circle = 1,//圆
+    Oval,//椭圆
+    RoundedRect,//矩形（可带圆角）
+    DottedLineRoundedRect//虚线边框，中间不镂空
 };
 
 @interface HighLightRegionModel : NSObject

SPGuidePage/ViewController.m

@@ -27,7 +27,7 @@ - (void)viewDidLoad {
 
     LinkImageModel *link = [LinkImageModel initWithStyle:LinkImageStyleDefult CustomImage:nil Position:LinkImagePositionRightOver OffsetX:0 OffsetY:0];
     HighLightRegionModel *circle = [HighLightRegionModel initWith:Circle Rect:self.btn1.frame Radius:0];
-    TextModel *title = [TextModel initWithFont:[UIFont systemFontOfSize:18] text:@"我我我我我我我我我我我我我我" Alignment:TextAlignmentRight];
+    TextModel *title = [TextModel initWithFont:[UIFont systemFontOfSize:18] text:@"我是大娃，会喷火" Alignment:TextAlignmentRight];
     LoaderItemModel *itemCircle = [LoaderItemModel initWithLink:link Title:title Region:circle];
 
 
@@ -42,7 +42,7 @@ - (void)viewDidLoad {
 
     HighLightRegionModel *LineroundedRect = [HighLightRegionModel initWith:DottedLineRoundedRect Rect:self.btn4.frame Radius:3];
     LinkImageModel *link2 = [LinkImageModel initWithStyle:LinkImageStyleTortuousArrow CustomImage:nil Position:LinkImagePositionLeftUnder OffsetX:0 OffsetY:0];
-    TextModel *title1 = [TextModel initWithFont:[UIFont systemFontOfSize:18] text:@"你你你你你你你你你你你你你你你你" Alignment:TextAlignmentLeft];
+    TextModel *title1 = [TextModel initWithFont:[UIFont systemFontOfSize:18] text:@"我是二娃，会洒水" Alignment:TextAlignmentLeft];
     LoaderItemModel *itemLineroundedRect = [LoaderItemModel initWithLink:link2 Title:title1 Region:LineroundedRect];
     GuideCoverView *guideV = [[GuideCoverView alloc]initWithItems:@[itemOval,itemCircle,itemRounded,itemLineroundedRect,itemImage]];
     [guideV showInView:self.view];