iOS customized PageControl show page number.自定义PageControl，使用页码代替dot
<div id="cnblogs_post_body"> 项目中，由于项目经理要求自定义一个PageControl，使用页码代替老式原点来交互。刚开始遍误入歧途，使用了使用UIPageControl的子类来绘制，可是没想到的是，当我重写-(void)drawRect:(CGRect)rect 方法后，并没有清除dot,后来想到了使用UIControl的子类化，It is perfect...,下面附上我的类，高手勿喷。如果可以使用UIPageControl子类化，希望高手不吝赐教，谢谢。.m file content
<div class="cnblogs_Highlighter">- (id)initWithFrame:(CGRect)frame{ if (self = ) { ]; //笔刷宽度 self.iStrokeWidth = 2; //页码之间间隙 self.iGapWidth = 10; //直径 self.iDiameter = 12; UITapGestureRecognizer *tapGestureRecognizer = [ initWithTarget:selfaction:@selector(onTapped:)]; ; } return self;}- (void)onTapped:(UITapGestureRecognizer*)gesture{ CGPoint touchPoint = ]; if (touchPoint.x < self.frame.size.width/2) { // move left if (self.currentPage>0) { self.currentPage -= 1; } } else { // move right if (self.currentPage<self.numberOfPages-1) { self.currentPage += 1; } } ; ;}- (void)drawRect:(CGRect)rect{ CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetLineWidth(context, self.iStrokeWidth); int gap = self.iGapWidth; float _diameter = self.iDiameter - 2*self.iStrokeWidth; int total_width = self.numberOfPages*_diameter + (self.numberOfPages-1)*gap; //5*8+4*10 80 if (total_width>self.frame.size.width){while (total_width>self.frame.size.width){_diameter -= 2;gap = _diameter + 2;while (total_width>self.frame.size.width){gap -= 1;total_width = self.numberOfPages*_diameter + (self.numberOfPages-1)*gap;if (gap==2){break;total_width = self.numberOfPages*_diameter + (self.numberOfPages-1)*gap;}}if (_diameter==2){break;total_width = self.numberOfPages*_diameter + (self.numberOfPages-1)*gap;}}} for (int i=0; i<self.numberOfPages; i++){ int _currentPageDiameter = self.iDiameter; int x = (self.frame.size.width-total_width)/2 + i*(_diameter+gap) - (_currentPageDiameter-_diameter)/2; if (i==self.currentPage) { CGContextSetRGBFillColor(context, 138 / 255.0, 83 / 255.0, 18 / 255.0, 1.0); CGContextFillEllipseInRect(context, CGRectMake(x,(self.frame.size.height-_currentPageDiameter)/2,_currentPageDiameter,_currentPageDiameter)); CGContextSetRGBStrokeColor(context, 138 / 255.0, 83 / 255.0, 18 / 255.0, 1.0); CGContextStrokeEllipseInRect(context, CGRectMake(x,(self.frame.size.height-_currentPageDiameter)/2,_currentPageDiameter,_currentPageDiameter)); } else { CGContextSetRGBFillColor(context, 138 / 255.0, 83 / 255.0, 18 / 255.0, 1.0); CGContextSetRGBStrokeColor(context, 138 / 255.0, 83 / 255.0, 18 / 255.0, 1.0); CGContextStrokeEllipseInRect(context, CGRectMake(x,(self.frame.size.height-_currentPageDiameter)/2,_currentPageDiameter,_currentPageDiameter)); } NSString *pageNumber = ; CGContextSetFillColorWithColor(context, [ CGColor]); lineBreakMode:UILineBreakModeCharacterWrapalignment:UITextAlignmentCenter]; }}
页:
[1]