iOS-电池图标【结合贝塞尔曲线控制电量显示】

2018-03-02 by Small-K

 

基于UIView类:WKJBatteryView

WKJBatteryView.h

#import <UIKit/UIKit.h>@interface WKJBatteryView : UIView/** value:0 - 100 */- (void)setBatteryValue:(NSInteger)value;@end

WKJBatteryView.m

#import "WKJBatteryView.h"@interface WKJBatteryView()///电池宽度@property (nonatomic,assign) CGFloat b_width;///电池高度@property (nonatomic,assign) CGFloat b_height;///电池外线宽@property (nonatomic,assign) CGFloat b_lineW;@property (nonatomic,strong) UIView *batteryView;@end@implementation WKJBatteryView- (instancetype)initWithFrame:(CGRect)frame{ self = [super initWithFrame:frame]; if (self) { [self drawBattery]; } return self;}///画图标- (void)drawBattery{ ///x坐标 CGFloat b_x = 1; ///y坐标 CGFloat b_y = 1; _b_height = self.bounds.size.height - 2; _b_width = self.bounds.size.width - 5; _b_lineW = 1; //画电池【左边电池】 UIBezierPath *pathLeft = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(b_x, b_y, _b_width, _b_height) cornerRadius:2]; CAShapeLayer *batteryLayer = [CAShapeLayer layer]; batteryLayer.lineWidth = _b_lineW; batteryLayer.strokeColor = [UIColor lightGrayColor].CGColor; batteryLayer.fillColor = [UIColor clearColor].CGColor; batteryLayer.path = [pathLeft CGPath]; [self.layer addSublayer:batteryLayer]; //画电池【右边电池箭头】 UIBezierPath *pathRight = [UIBezierPath bezierPath]; [pathRight moveToPoint:CGPointMake(b_x + _b_width+1, b_y + _b_height/3)]; [pathRight addLineToPoint:CGPointMake(b_x + _b_width+1, b_y + _b_height * 2/3)]; CAShapeLayer *layerRight = [CAShapeLayer layer]; layerRight.lineWidth = 2; layerRight.strokeColor = [UIColor lightGrayColor].CGColor; layerRight.fillColor = [UIColor clearColor].CGColor; layerRight.path = [pathRight CGPath]; [self.layer addSublayer:layerRight]; ///电池内填充 _batteryView = [[UIView alloc]initWithFrame:CGRectMake(b_x + 1,b_y + _b_lineW, 0, _b_height - _b_lineW * 2)]; _batteryView.layer.cornerRadius = 2; _batteryView.backgroundColor = [UIColor colorWithRed:0.324 green:0.941 blue:0.413 alpha:1.000]; [self addSubview:_batteryView];}///控制电量显示- (void)setBatteryValue:(NSInteger)value{ if (value<10) { _batteryView.backgroundColor = [UIColor redColor]; }else{ _batteryView.backgroundColor = [UIColor colorWithRed:0.324 green:0.941 blue:0.413 alpha:1.000]; } CGRect rect = _batteryView.frame; rect.size.width = (value*(_b_width - _b_lineW * 2))/100; _batteryView.frame = rect;}@end
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