时间轴的制作

制作时间轴时最重要的是计算下一个圆点及时间轴的长度

1.计算高度可以按取出的当前模型的内容计算，如下：

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//取出的每个模型  GTimeLineViewModel *timeLimeM = dataArray[i];  //设置内容       NSString *content = timeLimeM.text; //计算高度，注意这里的宽度很关键，将会控制你文字设置的高度，options设置为：NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading    CGSize size = [content boundingRectWithSize:CGSizeMake(200, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:14]} context:nil].size;

2.当计算下一个圆圈的y值时,算法如下：

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- (CGFloat)iyToDataArray:(NSArray <GTimeLineViewModel *> *)dataArray toIndex:(NSInteger)index{     CGFloat iy = 0;     GTimeLineViewModel *viewModel;     if (index > 0) {         CGFloat contentH = 0;   //计算下一个圆圈，关键点就在这里，当i=1公式为上一个的圆圈+上一个时间轴的高度,当i //== 2时公式为： //(i- 1)+(i - 2)内容的高度，当i == 3时公式为： //(i- 1)+(i - 2)+(i-3)内容的高度等等。         for (NSInteger i = index; i > 0; i--) {              viewModel= [dataArray objectAtIndex:(i-1)];             NSString *content = viewModel.text;             CGSize size = [content boundingRectWithSize:CGSizeMake(200, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[self FontSizeHeight:14]} context:nil].size;             contentH = contentH+size.height;         } //        CGFloat textH = [self compareHeigth:contentH];         iy = index * (KTIMELINEAUX_WH_CIRCLE+ 2*[_ktimeLineAux kTimeLineAuxScaleHeight:KTIMELINEAUX_HGAP_CIRCLE_IMAGE]+KTIMELINEAUX_WGAP_LEFT)+contentH;     }else{//为0时，y值 就是0         viewModel = dataArray[index];         NSString *content = viewModel.text;         CGSize size = [content boundingRectWithSize:CGSizeMake(200, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[self FontSizeHeight:14]} context:nil].size;         iy = index * (KTIMELINEAUX_WH_CIRCLE+size.height+ 2*[_ktimeLineAux kTimeLineAuxScaleHeight:KTIMELINEAUX_HGAP_CIRCLE_IMAGE]+KTIMELINEAUX_WGAP_LEFT);     }     return iy; }

 

3.下面就时间轴制作的整套代码

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#define  TIME_SCERRN_WIDTH [UIScreen mainScreen].bounds.size.width #define  TIME_SCERRN_HEIGHT [UIScreen mainScreen].bounds.size.height #import "GTimeLineView.h" #import "GTimeLineViewModel.h" #import "KTimeLineAux.h" #import "UIImage+Custom.h" @interface GTimeLineView(){       UILabel *_circleL; //圆圈     UILabel *_lineL;   //竖线     UILabel *_twoCircleL; //圆圈2     UILabel *_timeL;  //时间label     UIImageView *_conentImageV; //存储label文字     UILabel *_conentL;  //label文字     KTimeLineAux *_ktimeLineAux;       } @end @implementation GTimeLineView     - (void)timeLineViewWithFrame:(CGRect)frame reloadDataWithArray:(NSArray<GTimeLineViewModel *> *)dataArray{       if (dataArray && dataArray.count > 0) {         [self loadUI:frame];         for (NSInteger i = 0; i < dataArray.count; i++) {             id sub = dataArray[i];             if (![sub isKindOfClass:[GTimeLineViewModel class]]) {                 return;             }             GTimeLineViewModel *timeLimeM = dataArray[i];                      NSString *content = timeLimeM.text;             if (!content.length) {                 return;             }             CGFloat imageW = [self getImageViewWidth];                           CGSize size = [content boundingRectWithSize:CGSizeMake(200, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:14]} context:nil].size;             //线的高度             CGFloat lineHeight = 2*[_ktimeLineAux kTimeLineAuxScaleHeight:KTIMELINEAUX_HGAP_CIRCLE_IMAGE]+size.height+KTIMELINEAUX_WGAP_LEFT;                           CGFloat circleY = [self iyToDataArray:dataArray toIndex:i];                                     [self setFrame:frame];             //one circle             _circleL = [[UILabel alloc] initWithFrame:CGRectMake(frame.origin.x,circleY,KTIMELINEAUX_WH_CIRCLE, KTIMELINEAUX_WH_CIRCLE)];             [self setCornerRadiusWithLabel:_circleL];             _circleL.layer.borderColor = [self sixtyTwoColor].CGColor;             _circleL.layer.borderWidth = 2;                          //line                          _lineL = [[UILabel alloc] initWithFrame:CGRectMake(_circleL.center.x-KTIMELINEAUX_WIDTH_LINE/2,CGRectGetMaxY(_circleL.frame),KTIMELINEAUX_WIDTH_LINE,lineHeight)];             [_lineL setBackgroundColor:[self sixtyTwoColor]];                                         //time             _timeL = [[UILabel alloc] initWithFrame:CGRectMake(CGRectGetMaxX(_circleL.frame)+[_ktimeLineAux kTimeLineAuxScaleWidth:KTIMELINEAUX_WGAP_CIRCLE_TIME],CGRectGetMinY(_circleL.frame)-2,KTIMELINEAUX_WIDTH_TIME_LABEL,KTIMELINEAUX_HEIGHT_TIME_LABEL)];             [_timeL setTextColor:[self sixtyTwoColor]];             _timeL.text = timeLimeM.time;             [_timeL setFont:[self FontSizeHeight:16]];             _timeL.textAlignment = NSTextAlignmentLeft;                           //image                           _conentImageV = [[UIImageView alloc] initWithFrame:CGRectMake([_ktimeLineAux kTimeLineAuxScaleWidth:KTIMELINEAUX_WGAP_IMAGE_LEFT],CGRectGetMaxY(_circleL.frame)+[_ktimeLineAux kTimeLineAuxScaleHeight:KTIMELINEAUX_HGAP_CIRCLE_IMAGE],imageW,size.height+10)];             _conentImageV.image = [UIImage resizeableImageWithName:@"timeImage"];                           _conentL = [[UILabel alloc] initWithFrame:CGRectMake(KTIMELINEAUX_WGAP_LEFT, KTIMELINEAUX_WGAP_LEFT,CGRectGetWidth(_conentImageV.frame)-2*KTIMELINEAUX_WGAP_LEFT, size.height)];             _conentL.numberOfLines = 0;             _conentL.lineBreakMode = NSLineBreakByCharWrapping;             _conentL.text = content;             [_conentL setTextColor:[self fivtyOneColor]];             [_conentImageV addSubview:_conentL];                                    if (i == dataArray.count -1) {                 _twoCircleL = [[UILabel alloc] initWithFrame:CGRectMake(frame.origin.x,CGRectGetMaxY(_lineL.frame),KTIMELINEAUX_WH_CIRCLE, KTIMELINEAUX_WH_CIRCLE)];                 [self setCornerRadiusWithLabel:_twoCircleL];                 _twoCircleL.layer.borderColor = [self sixtyTwoColor].CGColor;                 _twoCircleL.layer.borderWidth = 2;                 [_twoCircleL setBackgroundColor:[UIColor clearColor]];                                   //change Frame                 CGRect selfF = self.frame;                 selfF.size.height = CGRectGetMaxY(_twoCircleL.frame)+10;                 self.frame = selfF;                   //                [self setContentSize:CGSizeMake(frame.size.width,3000)];             } //            [_scrollView addSubview:self];             [self addSubview:_circleL];             [self addSubview:_lineL];             [self addSubview:_twoCircleL];             [self addSubview:_timeL];             [self addSubview:_conentImageV];             [self addSubview:_twoCircleL];             NSLog(@"\n_circleL= %@\n_lineL =%@\n_timeL=%@\n_conentImageV=%@\n_twoCircleL=%@\nself=%@\n",_circleL,_lineL,_timeL,_conentImageV,_twoCircleL,self);                       }     }   } #pragma mark --- loadUI - (void)loadUI:(CGRect)frame{     _ktimeLineAux = [KTimeLineAux shareTimeLineAux];           CGFloat iy = 0;     if (frame.size.height <TIME_SCERRN_HEIGHT) {         iy = TIME_SCERRN_HEIGHT;     }else{         iy = frame.size.height;     } } #pragma mark --- font - (UIFont*)FontSizeHeight:(CGFloat)height{           return [UIFont systemFontOfSize:height]; } #pragma mark --- Radius - (void)setCornerRadiusWithLabel:(UILabel *)label{     label.layer.cornerRadius  = KTIMELINEAUX_WH_CIRCLE/2;     label.layer.masksToBounds = YES; } #pragma mark --- color - (UIColor *)fivtyOneColor{     return [self colorWithR:51 G:51 B:51]; } - (UIColor *)sixtyTwoColor{           return [self colorWithR:62 G:147 B:75]; } - (UIColor *)colorWithR:(CGFloat)r G:(CGFloat)g B:(CGFloat)b{           return [UIColor colorWithRed:r/255.0 green:g/255.0 blue:b/255.0 alpha:1.0]; }   //_circly iy - (CGFloat)iyToDataArray:(NSArray <GTimeLineViewModel *> *)dataArray toIndex:(NSInteger)index{     CGFloat iy = 0;     GTimeLineViewModel *viewModel;     if (index > 0) {         CGFloat contentH = 0;         for (NSInteger i = index; i > 0; i--) {              viewModel= [dataArray objectAtIndex:(i-1)];             NSString *content = viewModel.text;             CGSize size = [content boundingRectWithSize:CGSizeMake(200, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[self FontSizeHeight:14]} context:nil].size;             contentH = contentH+size.height;         } //        CGFloat textH = [self compareHeigth:contentH];         iy = index * (KTIMELINEAUX_WH_CIRCLE+ 2*[_ktimeLineAux kTimeLineAuxScaleHeight:KTIMELINEAUX_HGAP_CIRCLE_IMAGE]+KTIMELINEAUX_WGAP_LEFT)+contentH;     }else{         viewModel = dataArray[index];         NSString *content = viewModel.text;         CGSize size = [content boundingRectWithSize:CGSizeMake(200, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[self FontSizeHeight:14]} context:nil].size;         iy = index * (KTIMELINEAUX_WH_CIRCLE+size.height+ 2*[_ktimeLineAux kTimeLineAuxScaleHeight:KTIMELINEAUX_HGAP_CIRCLE_IMAGE]+KTIMELINEAUX_WGAP_LEFT);     }                 return iy; } - (CGFloat)getImageViewWidth{          return (TIME_SCERRN_WIDTH - [_ktimeLineAux kTimeLineAuxScaleWidth:KTIMELINEAUX_WGAP_IMAGE_LEFT] - 2*KTIMELINEAUX_WGAP_RIGHT); } - (CGFloat)compareHeigth:(CGFloat)height{           CGFloat h = 30;     if (h > height)         return h;     else        return  height; } @end + (UIImage *)resizeableImageWithName:(NSString *)name{           UIImage *image = [UIImage imageNamed:name];     NSInteger leftCapWidth = image.size.width *0.7;     NSInteger topCapHeight = image.size.height *0.5;     CGFloat left = 5;     CGFloat right = 10;     CGFloat top = 10;     CGFloat bottom = 10;     UIEdgeInsets insets = UIEdgeInsetsMake(top, left, bottom, right);           return [image resizableImageWithCapInsets:insets resizingMode:UIImageResizingModeStretch]; //    return [image stretchableImageWithLeftCapWidth:leftCapWidth topCapHeight:topCapHeight]; } #import <Foundation/Foundation.h> #import <UIKit/UIKit.h> @interface KTimeLineAux : NSObject       extern const NSInteger KTIMELINEAUX_WIDTH_TIME_LABEL;          //时间的宽度 extern const NSInteger KTIMELINEAUX_WIDTH_LINE;          //线的宽度 extern const NSInteger KTIMELINEAUX_WH_CIRCLE;           //圆圈的大小   extern const NSInteger KTIMELINEAUX_HEIGHT_TIME_LABEL;   //时间的高度   extern const NSInteger KTIMELINEAUX_WGAP_LEFT;          //视图左边间距 extern const NSInteger KTIMELINEAUX_WGAP_RIGHT;         //视图右边间距 extern const NSInteger KTIMELINEAUX_HGAP_CIRCLE_IMAGE;  //圆圈与存储文字的视图的上下间距     extern const NSInteger KTIMELINEAUX_WGAP_CIRCLE_TIME;    //圆圈与时间label的间距 extern const NSInteger KTIMELINEAUX_WGAP_LINE_IMAGE;     //线与存储文字视图的左右间距 extern const NSInteger KTIMELINEAUX_WGAP_IMAGE_LEFT;    //存储文字视图左边间距 extern const NSInteger KTIMELINEAUX_WGAP_IMAGE_RIGHT;   //存储文字视图右边间距     + (KTimeLineAux *)shareTimeLineAux;   /**按比例获取高度*/ - (CGFloat)kTimeLineAuxScaleHeight:(CGFloat)height; /**按比例获取宽度*/ - (CGFloat)kTimeLineAuxScaleWidth:(CGFloat)width; @end #define SCREEN_WIDTH ([[UIScreen mainScreen]bounds].size.width) #define SCREEN_HEIGHT ([[UIScreen mainScreen]bounds].size.height) #define SCREEN_WIDTH_SCALE SCREEN_WIDTH/375 #define SCREEN_HEIGHT_SCALE SCREEN_HEIGHT/667 #define SCREEN_DEFAULT_HEIGHT 667 #import "KTimeLineAux.h"   @implementation KTimeLineAux NSInteger const KTIMELINEAUX_WIDTH_TIME_LABEL = 100; NSInteger const KTIMELINEAUX_HEIGHT_TIME_LABEL = 20;   NSInteger const KTIMELINEAUX_WIDTH_LINE = 2; NSInteger const KTIMELINEAUX_WH_CIRCLE = 8;   NSInteger const KTIMELINEAUX_HGAP_CIRCLE_IMAGE = 17; NSInteger const KTIMELINEAUX_WGAP_LEFT = 10; NSInteger const KTIMELINEAUX_WGAP_RIGHT = 10; NSInteger const KTIMELINEAUX_WGAP_CIRCLE_TIME = 19; NSInteger const KTIMELINEAUX_WGAP_IMAGE_LEFT = 33; NSInteger const KTIMELINEAUX_WGAP_IMAGE_RIGHT = 10;     + (KTimeLineAux *)shareTimeLineAux{       static KTimeLineAux *timeLine = nil;     static dispatch_once_t onceToken;     dispatch_once(&onceToken, ^{         timeLine = [[KTimeLineAux alloc] init];     });     return timeLine; } - (CGFloat)kTimeLineAuxScaleHeight:(CGFloat)height{     if (height<=0) {         return 0;     }     CGFloat scaleH = height*SCREEN_HEIGHT_SCALE;     return scaleH; } - (CGFloat)kTimeLineAuxScaleWidth:(CGFloat)width{       if (width <= 0) {         return 0;     }     CGFloat scaleW = width*SCREEN_WIDTH_SCALE;     return scaleW; } @end