我们在工程中,或多或少的要修改控件的坐标-宽度-高度,于是,经常性的见到大家self.view.frame.origin.x,self.view.frame.size.width.........相当的麻烦,在这里向大家推荐一个比较好的工具类,是UIView的类目,它里面对于求坐标,求高度什么的做了封装,很方便大家调用.
@下载链接:点击这里
@.h
#import <Foundation/Foundation.h> #import <UIKit/UIKit.h> @interface UIView (TTCategory) @property(nonatomic) CGFloat left; @property(nonatomic) CGFloat top; @property(nonatomic) CGFloat right; @property(nonatomic) CGFloat bottom; @property(nonatomic) CGFloat width; @property(nonatomic) CGFloat height; @property(nonatomic) CGFloat centerX; @property(nonatomic) CGFloat centerY; @property(nonatomic,readonly) CGFloat screenX; @property(nonatomic,readonly) CGFloat screenY; @property(nonatomic,readonly) CGFloat screenViewX; @property(nonatomic,readonly) CGFloat screenViewY; @property(nonatomic,readonly) CGRect screenFrame; @property(nonatomic) CGPoint origin; @property(nonatomic) CGSize size; @property(nonatomic) BOOL visible; /** * Finds the first descendant view (including this view) that is a member of a particular class. */ - (UIView*)descendantOrSelfWithClass:(Class)cls; /** * Finds the first ancestor view (including this view) that is a member of a particular class. */ - (UIView*)ancestorOrSelfWithClass:(Class)cls; /** * Removes all subviews. */ - (void)removeAllSubviews; /** * Calculates the offset of this view from another view in screen coordinates. */ - (CGPoint)offsetFromView:(UIView*)otherView; /** * The view controller whose view contains this view. */ - (UIViewController*)viewController; - (void)addSubviews:(NSArray *)views; @end@.m
#import "UIViewAdditions.h"
@implementation UIView (TTCategory)
/******************************view是否可见*******************************/
- (BOOL)visible{
return !self.hidden;
}
- (void)setVisible:(BOOL)visible{
self.hidden = !visible;
}
/******************************设置View左边x坐标*******************************/
- (CGFloat)left {
return self.frame.origin.x;
}
- (void)setLeft:(CGFloat)x {
CGRect frame = self.frame;
frame.origin.x = x;
self.frame = frame;
}
/****************************设置View顶部y坐标*********************************/
- (CGFloat)top {
return self.frame.origin.y;
}
- (void)setTop:(CGFloat)y {
CGRect frame = self.frame;
frame.origin.y = y;
self.frame = frame;
}
/****************************设置View右边x坐标*********************************/
- (CGFloat)right {
return self.frame.origin.x + self.frame.size.width;
}
- (void)setRight:(CGFloat)right {
CGRect frame = self.frame;
frame.origin.x = right - frame.size.width;
self.frame = frame;
}
/****************************设置View底部y坐标*************************************/
- (CGFloat)bottom {
return self.frame.origin.y + self.frame.size.height;
}
- (void)setBottom:(CGFloat)bottom {
CGRect frame = self.frame;
frame.origin.y = bottom - frame.size.height;
self.frame = frame;
}
/*****************************设置View的中心坐标********************************/
- (CGFloat)centerX {
return self.center.x;
}
- (void)setCenterX:(CGFloat)centerX {
self.center = CGPointMake(centerX, self.center.y);
}
- (CGFloat)centerY {
return self.center.y;
}
- (void)setCenterY:(CGFloat)centerY {
self.center = CGPointMake(self.center.x, centerY);
}
/**************************设置View的宽度***********************************/
- (CGFloat)width {
return self.frame.size.width;
}
- (void)setWidth:(CGFloat)width {
CGRect frame = self.frame;
frame.size.width = width;
self.frame = frame;
}
/*****************************设置View的高度********************************/
- (CGFloat)height {
return self.frame.size.height;
}
- (void)setHeight:(CGFloat)height {
CGRect frame = self.frame;
frame.size.height = height;
self.frame = frame;
}
- (CGFloat)screenX {
CGFloat x = 0;
for (UIView* view = self; view; view = view.superview) {
x += view.left;
}
return x;
}
- (CGFloat)screenY {
CGFloat y = 0;
for (UIView* view = self; view; view = view.superview) {
y += view.top;
}
return y;
}
- (CGFloat)screenViewX {
CGFloat x = 0;
for (UIView* view = self; view; view = view.superview) {
x += view.left;
if ([view isKindOfClass:[UIScrollView class]]) {
UIScrollView* scrollView = (UIScrollView*)view;
x -= scrollView.contentOffset.x;
}
}
return x;
}
- (CGFloat)screenViewY {
CGFloat y = 0;
for (UIView* view = self; view; view = view.superview) {
y += view.top;
if ([view isKindOfClass:[UIScrollView class]]) {
UIScrollView* scrollView = (UIScrollView*)view;
y -= scrollView.contentOffset.y;
}
}
return y;
}
- (CGRect)screenFrame {
return CGRectMake(self.screenViewX, self.screenViewY, self.width, self.height);
}
- (CGPoint)origin {
return self.frame.origin;
}
- (void)setOrigin:(CGPoint)origin {
CGRect frame = self.frame;
frame.origin = origin;
self.frame = frame;
}
- (CGSize)size {
return self.frame.size;
}
- (void)setSize:(CGSize)size {
CGRect frame = self.frame;
frame.size = size;
self.frame = frame;
}
- (CGPoint)offsetFromView:(UIView*)otherView {
CGFloat x = 0, y = 0;
for (UIView* view = self; view && view != otherView; view = view.superview) {
x += view.left;
y += view.top;
}
return CGPointMake(x, y);
}
/*
- (CGFloat)orientationWidth {
return UIInterfaceOrientationIsLandscape(TTInterfaceOrientation())
? self.height : self.width;
}
- (CGFloat)orientationHeight {
return UIInterfaceOrientationIsLandscape(TTInterfaceOrientation())
? self.width : self.height;
}
*/
- (UIView*)descendantOrSelfWithClass:(Class)cls {
if ([self isKindOfClass:cls])
return self;
for (UIView* child in self.subviews) {
UIView* it = [child descendantOrSelfWithClass:cls];
if (it)
return it;
}
return nil;
}
- (UIView*)ancestorOrSelfWithClass:(Class)cls {
if ([self isKindOfClass:cls]) {
return self;
} else if (self.superview) {
return [self.superview ancestorOrSelfWithClass:cls];
} else {
return nil;
}
}
- (void)removeAllSubviews {
while (self.subviews.count) {
UIView* child = self.subviews.lastObject;
[child removeFromSuperview];
}
}
- (UIViewController*)viewController {
for (UIView* next = [self superview]; next; next = next.superview) {
UIResponder* nextResponder = [next nextResponder];
if ([nextResponder isKindOfClass:[UIViewController class]]) {
return (UIViewController*)nextResponder;
}
}
return nil;
}
- (void)addSubviews:(NSArray *)views
{
for (UIView* v in views) {
[self addSubview:v];
}
}
@end
@interface NSString (ParseCategory)
- (NSMutableDictionary *)explodeToDictionaryInnerGlue:(NSString *)innerGlue
outterGlue:(NSString *)outterGlue;
@end
@implementation NSString (ParseCategory)
- (NSMutableDictionary *)explodeToDictionaryInnerGlue:(NSString *)innerGlue
outterGlue:(NSString *)outterGlue
{
NSArray *firstExplode = [self componentsSeparatedByString:outterGlue];
NSArray *secondExplode;
NSInteger count = [firstExplode count];
NSMutableDictionary* returnDictionary = [NSMutableDictionary dictionaryWithCapacity:count];
for (NSInteger i = 0; i < count; i++)
{
secondExplode =
[(NSString*)[firstExplode objectAtIndex:i] componentsSeparatedByString:innerGlue];
if ([secondExplode count] == 2)
{
[returnDictionary setObject:[secondExplode objectAtIndex:1]
forKey:[secondExplode objectAtIndex:0]];
}
}
return returnDictionary;
}
@end
UIViewAdditions(一个很方便使用的工具类吧),布布扣,bubuko.com
原文地址：http://blog.csdn.net/hmt20130412/article/details/31779333
