效果
源码
https://github.com/YouXianMing/iOS-Project-Examples 中的 SetRect
// // AccessViewTagProtocol.h // Animations // // Created by YouXianMing on 16/6/17. // Copyright © 2016年 YouXianMing. All rights reserved. // #import <Foundation/Foundation.h> #import <UIKit/UIKit.h> typedef void(^ViewSetupBlock)(UIView * view); @protocol AccessViewTagProtocol <NSObject> @required /** * Set the view whose tag matches the specified value. * * @param view View. * @param tag tag. */ - (void)setView:(UIView *)view withTag:(NSInteger)tag; /** * Remove the tag. * * @param tag View‘s tag. */ - (void)removeReferenceWithTag:(NSInteger)tag; /** * Get the view from the tag. * * @param tag. * * @return view‘s object. */ - (id)viewWithTag:(NSInteger)tag; @end
//
// UIView+FrameAndTag.h
// SetRect
//
// Created by YouXianMing on 16/6/19.
// Copyright © 2016年 YouXianMing. All rights reserved.
//
#import <UIKit/UIKit.h>
#import "AccessViewTagProtocol.h"
@interface UIView (FrameAndTag) <AccessViewTagProtocol>
#pragma mark - Set tags.
/**
* Support AccessViewTagProtocol.
*/
- (void)supportAccessViewTagProtocol;
/**
* Get the view with specified tag from CustomViewController type‘s controller.
*
* @param tag View‘s tag.
* @param object AccessViewTagProtocol‘s object.
*
* @return The view.
*/
+ (instancetype)viewWithTag:(NSInteger)tag from:(id <AccessViewTagProtocol>)object;
/**
* Set the view‘s tag.
*
* @param tag View‘s tag.
* @param object AccessViewTagProtocol‘s object.
*/
- (void)setTag:(NSInteger)tag attachedTo:(id <AccessViewTagProtocol>)object;
#pragma mark - Init frames.
/**
* 设置尺寸以及设置tag值
*/
+ (instancetype)viewWithFrame:(CGRect)frame insertIntoView:(UIView *)view tag:(NSInteger)tag
attachedTo:(id <AccessViewTagProtocol>)object setupBlock:(ViewSetupBlock)block;
/**
* 设置尺寸
*/
+ (instancetype)viewWithFrame:(CGRect)frame insertIntoView:(UIView *)view setupBlock:(ViewSetupBlock)block;
#pragma mark - Init line view.
/**
* 水平线条
*/
+ (instancetype)lineViewInsertIntoView:(UIView *)view positionY:(CGFloat)positionY thick:(CGFloat)thick
leftGap:(CGFloat)leftGap rightGap:(CGFloat)rightGap color:(UIColor *)color;
/**
* 垂直线条
*/
+ (instancetype)lineViewInsertIntoView:(UIView *)view positionX:(CGFloat)positionX thick:(CGFloat)thick
topGap:(CGFloat)topGap bottomGap:(CGFloat)bottomGap color:(UIColor *)color;
@end
NS_INLINE id viewFrom(id <AccessViewTagProtocol> object, NSInteger tag) {
return [UIView viewWithTag:tag from:object];
}
//
// UIView+FrameAndTag.m
// SetRect
//
// Created by YouXianMing on 16/6/19.
// Copyright © 2016年 YouXianMing. All rights reserved.
//
#import <objc/runtime.h>
#import "UIView+FrameAndTag.h"
@interface UIView ()
@property (nonatomic, strong) NSNumber *tagNumberValue;
@property (nonatomic, strong) NSMapTable <NSString *, UIView *> *viewsWeakMap;
@end
@implementation UIView (FrameAndTag)
- (void)supportAccessViewTagProtocol {
self.viewsWeakMap = [NSMapTable strongToWeakObjectsMapTable];
}
+ (instancetype)viewWithTag:(NSInteger)tag from:(id <AccessViewTagProtocol>)object {
return [object viewWithTag:tag];
}
- (void)setTag:(NSInteger)tag attachedTo:(id <AccessViewTagProtocol>)object {
self.tagNumberValue ? [object removeReferenceWithTag:self.tagNumberValue.integerValue] : 0;
self.tag = tag;
self.tagNumberValue = @(tag);
[object setView:self withTag:tag];
}
+ (instancetype)viewWithFrame:(CGRect)frame
insertIntoView:(UIView *)view
tag:(NSInteger)tag
attachedTo:(id <AccessViewTagProtocol>)object
setupBlock:(ViewSetupBlock)block {
UIView *tmpView = [[[self class] alloc] initWithFrame:frame];
[tmpView supportAccessViewTagProtocol];
view && [view isKindOfClass:[UIView class]] ? ([view addSubview:tmpView]) : 0;
object && [object respondsToSelector:@selector(setView:withTag:)] ? ([tmpView setTag:tag attachedTo:object]) : 0;
if (block) {
block(tmpView);
}
return tmpView;
}
+ (instancetype)viewWithFrame:(CGRect)frame
insertIntoView:(UIView *)view
setupBlock:(ViewSetupBlock)block {
UIView *tmpView = [[[self class] alloc] initWithFrame:frame];
[tmpView supportAccessViewTagProtocol];
view && [view isKindOfClass:[UIView class]] ? ([view addSubview:tmpView]) : 0;
if (block) {
block(tmpView);
}
return tmpView;
}
+ (instancetype)lineViewInsertIntoView:(UIView *)view positionY:(CGFloat)positionY thick:(CGFloat)thick
leftGap:(CGFloat)leftGap rightGap:(CGFloat)rightGap color:(UIColor *)color {
UIView *tmpView = [[[self class] alloc] initWithFrame:CGRectMake(leftGap, positionY, view.frame.size.width - leftGap - rightGap, thick)];
color ? tmpView.backgroundColor = color : 0;
[view addSubview:tmpView];
return tmpView;
}
+ (instancetype)lineViewInsertIntoView:(UIView *)view positionX:(CGFloat)positionX thick:(CGFloat)thick
topGap:(CGFloat)topGap bottomGap:(CGFloat)bottomGap color:(UIColor *)color {
UIView *tmpView = [[[self class] alloc] initWithFrame:CGRectMake(positionX, topGap, thick, view.frame.size.height - topGap - bottomGap)];
color ? tmpView.backgroundColor = color : 0;
[view addSubview:tmpView];
return tmpView;
}
#pragma mark - Runtime property.
- (void)setTagNumberValue:(NSNumber *)tagNumberValue {
objc_setAssociatedObject(self, @selector(tagNumberValue), tagNumberValue, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
- (NSNumber *)tagNumberValue {
return objc_getAssociatedObject(self, _cmd);
}
- (void)setViewsWeakMap:(NSMapTable<NSString *,UIView *> *)viewsWeakMap {
objc_setAssociatedObject(self, @selector(viewsWeakMap), viewsWeakMap, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
- (NSMapTable<NSString *,UIView *> *)viewsWeakMap {
return objc_getAssociatedObject(self, _cmd);
}
#pragma mark - AccessViewTagProtocol.
- (void)setView:(UIView *)view withTag:(NSInteger)tag {
[self.viewsWeakMap setObject:view forKey:@(tag).stringValue];
}
- (id)viewWithTag:(NSInteger)tag {
return [self.viewsWeakMap objectForKey:@(tag).stringValue];
}
- (void)removeReferenceWithTag:(NSInteger)tag {
[self.viewsWeakMap removeObjectForKey:@(tag).stringValue];
}
@end
细节
需要实现协议(用NSMapTable的strongToWeakObjectsMapTable来作为存储string - view)
获取tag更为便利,不依赖于从哪一个view中获取view,而是直接从NSMapTable中获取
时间： 2024-10-16 02:28:37