iOS如何自定義水平滾動條、進度條

小編給大家分享一下iOS如何自定義水平滾動條、進度條，相信大部分人都還不怎么了解，因此分享這篇文章給大家參考一下，希望大家閱讀完這篇文章后大有收獲，下面讓我們一起去了解一下吧！

簡單說一下邏輯，新建一個繼承UIView的類，分別給軌道、滑塊添加UITapGestureRecognizer點擊、UIPanGestureRecognizer滑動手勢。獲取偏移量，計算控件位置，刷新視圖。

下面貼上核心代碼：

顯示視圖，在控制器調用代碼：

HWSlider *slider = [[HWSlider alloc] initWithFrame:CGRectMake(10, 50, 300, 75)];[self.view addSubview:slider];

HWSlider：

#import <UIKit/UIKit.h>@interface HWSlider : UIView@property (nonatomic, assign) NSInteger score;@end/*** ---------------分割線--------------- ***/#import "HWSlider.h"#import "UIView+Additions.h"@interface HWSlider ()@property (nonatomic, weak) UIImageView *bubbleImage;@property (nonatomic, weak) UIImageView *arrowImage;@property (nonatomic, weak) UILabel *scoreLabel;@property (nonatomic, weak) UILabel *levelLable;@property (nonatomic, weak) UIView *trackView;@property (nonatomic, weak) UIImageView *thumb;@end@implementation HWSlider- (instancetype)initWithFrame:(CGRect)frame{ if (self = [super initWithFrame:frame]) {  _score = 10;  self.backgroundColor = [UIColor whiteColor];  //氣泡圖片  UIImageView *bubbleImage = [[UIImageView alloc] initWithFrame:CGRectMake(self.bounds.size.width - 70, 0, 74, 35)];  [bubbleImage setImage:[UIImage imageNamed:@"alert_teacherEva_bubbleImage"]];  [self addSubview:bubbleImage];  _bubbleImage = bubbleImage;  //分數標簽  UILabel *scoreLabel = [[UILabel alloc] initWithFrame:CGRectMake(self.bounds.size.width - 71.5, 0, 74, 28)];  scoreLabel.text = @"10";  scoreLabel.textColor = [UIColor blackColor];  scoreLabel.font = [UIFont systemFontOfSize:15.f];  scoreLabel.textAlignment = NSTextAlignmentCenter;  [self addSubview:scoreLabel];  _scoreLabel = scoreLabel;  //氣泡箭頭  UIImageView *arrowImage = [[UIImageView alloc] initWithFrame:CGRectMake(self.bounds.size.width - 16.5, 26, 13, 13)];  [arrowImage setImage:[UIImage imageNamed:@"alert_teacherEva_arrowImage"]];  [self addSubview:arrowImage];  _arrowImage = arrowImage;  //軌道可點擊視圖（軌道只設置了5pt，通過這個視圖增加以下點擊區域）  UIView *tapView = [[UIView alloc] initWithFrame:CGRectMake(0, 34, self.bounds.size.width, 20)];  [tapView addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)]];  [self addSubview:tapView];  //軌道背景  UIView *backView = [[UIView alloc] initWithFrame:CGRectMake(0, 7.5, self.bounds.size.width, 5)];  backView.backgroundColor = [UIColor grayColor];  backView.layer.cornerRadius = 2.5f;  backView.layer.masksToBounds = YES;  [tapView addSubview:backView];  //軌道前景  UIView *trackView = [[UIView alloc] initWithFrame:CGRectMake(1.5, 9, self.bounds.size.width - 3, 2)];  trackView.backgroundColor = [UIColor greenColor];  trackView.layer.cornerRadius = 1.f;  trackView.layer.masksToBounds = YES;  [tapView addSubview:trackView];  _trackView = trackView;  //滑塊  UIImageView *thumb = [[UIImageView alloc] initWithFrame:CGRectMake(self.bounds.size.width - 20, 34, 20, 20)];  [thumb setImage:[UIImage imageNamed:@"alert_teacherEva_sliderImg"]];  thumb.userInteractionEnabled = YES;  thumb.contentMode = UIViewContentModeCenter;  [thumb addGestureRecognizer:[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)]];  [self addSubview:thumb];  _thumb = thumb;  //級別標簽  UILabel *levelLable = [[UILabel alloc] initWithFrame:CGRectMake(0, CGRectGetMaxY(thumb.frame) + 7, self.bounds.size.width, 13)];  levelLable.text = @"非常滿意";  levelLable.textColor = [UIColor blackColor];  levelLable.font = [UIFont systemFontOfSize:13.f];  levelLable.textAlignment = NSTextAlignmentCenter;  [self addSubview:levelLable];  _levelLable = levelLable; } return self;}- (void)setScore:(NSInteger)score{ _score = score; //刷新視圖 [self reloadViewWithThumbCeneterX:score / 10.0 * self.bounds.size.width];}//點擊滑動條- (void)handleTap:(UITapGestureRecognizer *)sender{ //刷新視圖 [self reloadViewWithThumbCeneterX:[sender locationInView:self].x];}//滑動滑塊- (void)handlePan:(UIPanGestureRecognizer *)sender{ //獲取偏移量 CGFloat moveX = [sender translationInView:self].x; //重置偏移量，避免下次獲取到的是原基礎的增量 [sender setTranslation:CGPointMake(0, 0) inView:self]; //計算當前中心值 CGFloat centerX = _thumb.centerX + moveX; //防止瞬間大偏移量滑動影響顯示效果 if (centerX < 10) centerX = 10; if (centerX > self.bounds.size.width - 10) centerX = self.bounds.size.width - 10; //刷新視圖 [self reloadViewWithThumbCeneterX:centerX];}- (void)reloadViewWithThumbCeneterX:(CGFloat)thumbCeneterX{ //更新軌道前景色 _trackView.frameWidth = thumbCeneterX; //更新滑塊位置 _thumb.centerX = thumbCeneterX; if (_thumb.centerX < 10) {  _thumb.centerX = 10; }else if (_thumb.centerX > self.bounds.size.width - 10) {  _thumb.centerX = self.bounds.size.width - 10; } //更新箭頭位置 _arrowImage.centerX = _thumb.centerX; //更新氣泡標簽位置（氣泡圖片寬度74，實際內容寬度66） _bubbleImage.centerX = _thumb.centerX; if (_bubbleImage.centerX < 33) {  _bubbleImage.centerX = 33; }else if (_bubbleImage.centerX > self.bounds.size.width - 33) {  _bubbleImage.centerX = self.bounds.size.width - 33; } //更新分數標簽位置 _scoreLabel.centerX = _bubbleImage.centerX; //分數，四舍五入取整 _score = round(thumbCeneterX / self.bounds.size.width * 10); //更新標簽內容 _scoreLabel.text = [NSString stringWithFormat:@"%ld", _score]; if (_score <= 3) {  _levelLable.text = @"極不滿意"; }else if (_score <= 5) {  _levelLable.text = @"不滿意"; }else if (_score <= 7) {  _levelLable.text = @"一般"; }else if (_score <= 9) {  _levelLable.text = @"滿意"; }else if (_score == 10) {  _levelLable.text = @"非常滿意"; }}@end

以上是“iOS如何自定義水平滾動條、進度條”這篇文章的所有內容，感謝各位的閱讀！相信大家都有了一定的了解，希望分享的內容對大家有所幫助，如果還想學習更多知識，歡迎關注億速云行業資訊頻道！