最近做项目，碰到一种双向滑动条，自己实现了一下，随便写一下思路，方便以后开发，避免重复写代码，以后粘贴就行了。封装了一下，代码如下：
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#import <uikit/uikit.h>typedef nsstring* (^hldoubleslideviewswitchstrbock)(cgfloat count);@interface hldoubleslideview : uiview@property(nonatomic,assign)cgfloat maxvalue;@property(nonatomic,assign)cgfloat minvalue;@property(nonatomic,assign)cgfloat currentleftvalue;@property(nonatomic,assign)cgfloat currentrightvalue;//格式化显示文本@property(nonatomic,copy)hldoubleslideviewswitchstrbock block;@end |
源文件如下：
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#import "hldoubleslideview.h"#import "uiview+add.h"@interface hldoubleslideview ()<uigesturerecognizerdelegate>@property(nonatomic,strong)uiimageview *leftimageview;@property(nonatomic,strong)uiimageview *rightimageview;@property(nonatomic,strong)uilabel *leftlabel;@property(nonatomic,strong)uilabel *rightlabel;@property(nonatomic,strong)uibutton *leftbtn;@property(nonatomic,strong)uibutton *rightbtn;@property(nonatomic,assign)cgfloat leftbtnorgx;@property(nonatomic,assign)cgfloat rightbtnorgx;@end@implementation hldoubleslideview-(id)init{ if (self = [super init]) { [self setupui]; } return self;}-(void)setupui{ _leftimageview = [[uiimageview alloc] init]; _leftimageview.image = [uiimage imagenamed:@"progressimage"]; _leftimageview.frame = cgrectmake(0, 5, 60, 40); [self addsubview:_leftimageview]; _leftlabel = [[uilabel alloc] initwithframe:_leftimageview.bounds]; _leftlabel.backgroundcolor = [uicolor clearcolor]; _leftlabel.font = [uifont systemfontofsize:13]; _leftlabel.textalignment = nstextalignmentcenter; _leftlabel.textcolor = [uicolor whitecolor]; [_leftimageview addsubview:_leftlabel]; _rightimageview = [[uiimageview alloc] init]; _rightimageview.image = [uiimage imagenamed:@"progressimage"]; _rightimageview.frame = cgrectmake(0, 5, 60, 40); [self addsubview:_rightimageview]; _rightlabel = [[uilabel alloc] initwithframe:_rightimageview.bounds]; _rightlabel.backgroundcolor = [uicolor clearcolor]; _rightlabel.font = [uifont systemfontofsize:13]; _rightlabel.textalignment = nstextalignmentcenter; _rightlabel.textcolor = [uicolor whitecolor]; [_rightimageview addsubview:_rightlabel]; _leftbtn = [uibutton buttonwithtype:uibuttontypecustom]; _leftbtn.frame = cgrectmake(0, 50, 20,20); _leftbtn.backgroundcolor = [uicolor bluecolor]; _leftbtn.layer.cornerradius = 10; [self addsubview:_leftbtn]; uipangesturerecognizer *pangesture = [[uipangesturerecognizer alloc] initwithtarget:self action:@selector(tapgestureaction:)]; pangesture.delegate = self; [_leftbtn addgesturerecognizer:pangesture]; _leftimageview.centerx = _leftbtn.centerx; _rightbtn = [uibutton buttonwithtype:uibuttontypecustom]; _rightbtn.backgroundcolor = [uicolor bluecolor]; _rightbtn.frame = cgrectmake(240, 50, 20, 20); _rightbtn.layer.cornerradius = 10; pangesture = [[uipangesturerecognizer alloc] initwithtarget:self action:@selector(tapgestureaction:)]; pangesture.delegate = self; [_rightbtn addgesturerecognizer:pangesture]; _rightimageview.centerx = _rightbtn.centerx; [self addsubview:_rightbtn];}- (bool)gesturerecognizershouldbegin:(uigesturerecognizer *)gesturerecognizer{ return yes;}-(uiview*)hittest:(cgpoint)point withevent:(uievent *)event{ nslog(@"doubleview hittest"); return [super hittest:point withevent:event];}-(void)touchesbegan:(nsset<uitouch *> *)touches withevent:(uievent *)event{ nslog(@"began"); [super touchesbegan:touches withevent:event];}-(void)touchesmoved:(nsset<uitouch *> *)touches withevent:(uievent *)event{ nslog(@"move"); [super touchesmoved:touches withevent:event];}-(void)layoutsubviews{ cgfloat centenx = (_currentleftvalue - _minvalue) * (self.bounds.size.width - 20)/(_maxvalue - _minvalue) + 10; _leftbtn.centerx = centenx; if (_currentleftvalue != 0) { cgfloat centenx = (_currentrightvalue - _minvalue) * (self.bounds.size.width - 20) / (_maxvalue - _minvalue) + 10; _rightbtn.centerx = centenx; } else { _rightbtn.centerx = self.bounds.size.width - 10; } _leftimageview.centerx = _leftbtn.centerx; _rightimageview.centerx = _rightbtn.centerx; if (_block) { _leftlabel.text = _block(_currentleftvalue); _rightlabel.text = _block(_currentrightvalue); }}-(void)tapgestureaction:(uipangesturerecognizer*)pangesture{ uiview *vw = pangesture.view; cgpoint transpoint = [pangesture translationinview:self]; nslog(@"x:%lf,y:%lf",transpoint.x,transpoint.y); switch (pangesture.state) { case uigesturerecognizerstatebegan: { if ([vw isequal:_leftbtn]) { _leftbtnorgx = _leftbtn.orgx; nslog(@"拖拽左边按钮"); } else if([vw isequal:_rightbtn]) { _rightbtnorgx = _rightbtn.orgx; nslog(@"拖拽右边按钮"); } } break; case uigesturerecognizerstatechanged: { if ([vw isequal:_leftbtn]) { cgfloat orginx = _leftbtn.orgx; _leftbtn.orgx = _leftbtnorgx + transpoint.x; if (_leftbtn.orgx < 0) { _leftbtn.orgx = 0; } else if(_leftbtn.orgx >= _rightbtn.orgx - 20) { _leftbtn.orgx = orginx; } _leftimageview.centerx = _leftbtn.centerx; } else if([vw isequal:_rightbtn]) { cgfloat orginx = _rightbtn.orgx; _rightbtn.orgx = _rightbtnorgx + transpoint.x; if (_rightbtn.orgx >= self.bounds.size.width - 20) { _rightbtn.orgx = self.bounds.size.width - 20; } else if(_rightbtn.orgx <= _leftbtn.orgx + 20) { _rightbtn.orgx = orginx; } _rightimageview.centerx = _rightbtn.centerx; } } break; case uigesturerecognizerstateended: { } break; default: break; } _currentleftvalue = _minvalue + (_maxvalue - _minvalue) * ((_leftbtn.centerx - 10) / (self.bounds.size.width - 20)); _currentrightvalue = _minvalue + (_maxvalue - _minvalue) * ((_rightbtn.centerx - 10) / (self.bounds.size.width - 20)); if (_block) { _leftlabel.text = _block(_currentleftvalue); _rightlabel.text = _block(_currentrightvalue); } nslog(@"leftvalue:%lf,rightvalue:%lf",_currentleftvalue,_currentrightvalue); [self setneedsdisplay];}-(void)setcurrentleftvalue:(cgfloat)currentleftvalue{ _currentleftvalue = currentleftvalue; cgfloat centenx = (currentleftvalue - _minvalue) * (self.bounds.size.width - 20)/(_maxvalue - _minvalue) + 10; _leftbtn.centerx = centenx; [self setneedsdisplay];}-(void)setcurrentrightvalue:(cgfloat)currentrightvalue{ _currentrightvalue = currentrightvalue; cgfloat centenx = (_currentrightvalue - _minvalue) * (self.bounds.size.width - 20) / (_maxvalue - _minvalue) + 10; _rightbtn.centerx = centenx; [self setneedsdisplay];}-(void)drawrect:(cgrect)rect{ cgcontextref context = uigraphicsgetcurrentcontext(); cgcontextsetlinecap(context, kcglinecapround); cgcontextsetlinewidth(context, 3); [[uicolor graycolor] setstroke]; cgcontextmovetopoint(context, 0, 60); cgcontextaddlinetopoint(context, self.bounds.size.width, 60); cgcontextstrokepath(context); [[uicolor redcolor] setstroke]; cgcontextmovetopoint(context, _leftbtn.orgx + 10, 60); cgcontextaddlinetopoint(context, _rightbtn.orgx,60); cgcontextstrokepath(context);}@end |
使用如下：
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hldoubleslideview *doubleslideview = [[hldoubleslideview alloc] init];doubleslideview.backgroundcolor = [uicolor whitecolor];//hlcolor(244, 244, 244);doubleslideview.minvalue = 1000;doubleslideview.maxvalue = 10000;doubleslideview.block = ^nsstring*(cgfloat count){ return [nsstring stringwithformat:@"%.0f元",count];};[self.view addsubview:doubleslideview];doubleslideview.frame = cgrectmake(60, 64, 250, 80);doubleslideview.currentleftvalue = 1200;doubleslideview.currentrightvalue = 10000; |
运行结果如下：
demo:https://github.com/jiangtaidi/hldoubleslideview.git
以上就是本文的全部内容，希望对大家的学习有所帮助。
