关于OC中直接打印结构体(CGRectCGSize、CGPoint、UIOffset)等数据类型

关于OC直接打印结构体,点(CGRect,CGSize,CGPoint,UIOffset)等数据类型,我们完全可以把其转换为OC对象来进项打印调试,而不必对结构体中的成员变量进行打印.就好比我们可以使用NSStringFromCGRect(CGRect rect)来直接打印一个结构体

    NSLog(@"SuperLog------ %@",NSStringFromCGRect(CGRectMake(, , , )));
    NSLog(@"SuperLog------ %@",NSStringFromCGPoint(CGPointMake(, )));
    NSLog(@"SuperLog------ %@",NSStringFromCGSize(CGSizeMake(, )));

其他打印可以参考以下内容

UIKIT_EXTERN NSString *NSStringFromCGPoint(CGPoint point);

UIKIT_EXTERN NSString *NSStringFromCGVector(CGVector vector);

UIKIT_EXTERN NSString *NSStringFromCGSize(CGSize size);

UIKIT_EXTERN NSString *NSStringFromCGRect(CGRect rect);

UIKIT_EXTERN NSString *NSStringFromCGAffineTransform(CGAffineTransform transform);

UIKIT_EXTERN NSString *NSStringFromUIEdgeInsets(UIEdgeInsets insets);

UIKIT_EXTERN NSString *NSStringFromUIOffset(UIOffset offset);

OC中好多几何学中的内容,一般都包括在 UIGeometry.h 文件中 仔细看看,可以学到好多东西

  NS_ASSUME_NONNULL_BEGIN

 typedef struct UIEdgeInsets {
     CGFloat top, left, bottom, right;  // specify amount to inset (positive) for each of the edges. values can be negative to 'outset'
 } UIEdgeInsets;

 typedef struct UIOffset {
     CGFloat horizontal, vertical; // specify amount to offset a position, positive for right or down, negative for left or up
 } UIOffset;

 typedef NS_OPTIONS(NSUInteger, UIRectEdge) {
     UIRectEdgeNone   = ,
     UIRectEdgeTop    =  << ,
     UIRectEdgeLeft   =  << ,
     UIRectEdgeBottom =  << ,
     UIRectEdgeRight  =  << ,
     UIRectEdgeAll    = UIRectEdgeTop | UIRectEdgeLeft | UIRectEdgeBottom | UIRectEdgeRight
 } NS_ENUM_AVAILABLE_IOS(7_0);

 UIKIT_STATIC_INLINE UIEdgeInsets UIEdgeInsetsMake(CGFloat top, CGFloat left, CGFloat bottom, CGFloat right) {
     UIEdgeInsets insets = {top, left, bottom, right};
     return insets;
 }

 UIKIT_STATIC_INLINE CGRect UIEdgeInsetsInsetRect(CGRect rect, UIEdgeInsets insets) {
     rect.origin.x    += insets.left;
     rect.origin.y    += insets.top;
     rect.size.width  -= (insets.left + insets.right);
     rect.size.height -= (insets.top  + insets.bottom);
     return rect;
 }

 UIKIT_STATIC_INLINE UIOffset UIOffsetMake(CGFloat horizontal, CGFloat vertical) {
     UIOffset offset = {horizontal, vertical};
     return offset;
 }

 UIKIT_STATIC_INLINE BOOL UIEdgeInsetsEqualToEdgeInsets(UIEdgeInsets insets1, UIEdgeInsets insets2) {
     return insets1.left == insets2.left && insets1.top == insets2.top && insets1.right == insets2.right && insets1.bottom == insets2.bottom;
 }

 UIKIT_STATIC_INLINE BOOL UIOffsetEqualToOffset(UIOffset offset1, UIOffset offset2) {
     return offset1.horizontal == offset2.horizontal && offset1.vertical == offset2.vertical;
 }

 UIKIT_EXTERN const UIEdgeInsets UIEdgeInsetsZero;
 UIKIT_EXTERN const UIOffset UIOffsetZero;

 // 结构体等数据类型 --> OC对象
 UIKIT_EXTERN NSString *NSStringFromCGPoint(CGPoint point);
 UIKIT_EXTERN NSString *NSStringFromCGVector(CGVector vector);
 UIKIT_EXTERN NSString *NSStringFromCGSize(CGSize size);
 UIKIT_EXTERN NSString *NSStringFromCGRect(CGRect rect);
 UIKIT_EXTERN NSString *NSStringFromCGAffineTransform(CGAffineTransform transform);
 UIKIT_EXTERN NSString *NSStringFromUIEdgeInsets(UIEdgeInsets insets);
 UIKIT_EXTERN NSString *NSStringFromUIOffset(UIOffset offset);

 // OC对象 --> 结构体等数据类型
 UIKIT_EXTERN CGPoint CGPointFromString(NSString *string);
 UIKIT_EXTERN CGVector CGVectorFromString(NSString *string);
 UIKIT_EXTERN CGSize CGSizeFromString(NSString *string);
 UIKIT_EXTERN CGRect CGRectFromString(NSString *string);
 UIKIT_EXTERN CGAffineTransform CGAffineTransformFromString(NSString *string);
 UIKIT_EXTERN UIEdgeInsets UIEdgeInsetsFromString(NSString *string);
 UIKIT_EXTERN UIOffset UIOffsetFromString(NSString *string);

 @interface NSValue (NSValueUIGeometryExtensions)

 + (NSValue *)valueWithCGPoint:(CGPoint)point;
 + (NSValue *)valueWithCGVector:(CGVector)vector;
 + (NSValue *)valueWithCGSize:(CGSize)size;
 + (NSValue *)valueWithCGRect:(CGRect)rect;
 + (NSValue *)valueWithCGAffineTransform:(CGAffineTransform)transform;
 + (NSValue *)valueWithUIEdgeInsets:(UIEdgeInsets)insets;
 + (NSValue *)valueWithUIOffset:(UIOffset)insets NS_AVAILABLE_IOS(5_0);

 - (CGPoint)CGPointValue;
 - (CGVector)CGVectorValue;
 - (CGSize)CGSizeValue;
 - (CGRect)CGRectValue;
 - (CGAffineTransform)CGAffineTransformValue;
 - (UIEdgeInsets)UIEdgeInsetsValue;
 - (UIOffset)UIOffsetValue NS_AVAILABLE_IOS(5_0);

 @end

 @interface NSCoder (UIGeometryKeyedCoding)

 - (void)encodeCGPoint:(CGPoint)point forKey:(NSString *)key;
 - (void)encodeCGVector:(CGVector)vector forKey:(NSString *)key;
 - (void)encodeCGSize:(CGSize)size forKey:(NSString *)key;
 - (void)encodeCGRect:(CGRect)rect forKey:(NSString *)key;
 - (void)encodeCGAffineTransform:(CGAffineTransform)transform forKey:(NSString *)key;
 - (void)encodeUIEdgeInsets:(UIEdgeInsets)insets forKey:(NSString *)key;
 - (void)encodeUIOffset:(UIOffset)offset forKey:(NSString *)key NS_AVAILABLE_IOS(5_0);

 - (CGPoint)decodeCGPointForKey:(NSString *)key;
 - (CGVector)decodeCGVectorForKey:(NSString *)key;
 - (CGSize)decodeCGSizeForKey:(NSString *)key;
 - (CGRect)decodeCGRectForKey:(NSString *)key;
 - (CGAffineTransform)decodeCGAffineTransformForKey:(NSString *)key;
 - (UIEdgeInsets)decodeUIEdgeInsetsForKey:(NSString *)key;
 - (UIOffset)decodeUIOffsetForKey:(NSString *)key NS_AVAILABLE_IOS(5_0);

 @end

 NS_ASSUME_NONNULL_END