ColourClock 将时间值转换成背景色

https://github.com/bennyguitar/ColourClock

This project converts Time to Hex/RGB, and is quite beautiful to look at. This was HEAVILY inspired byhttp://thecolourclock.co.uk and really, all credit goes to them.

这个工程是用来把时间值转换为Hex/RGB值的，看起来非常漂亮。灵感来自于这个网站 http://thecolourclock.co.uk

  

 

 

使用思路：

将一个要根据时间改变颜色View中layer的backgroundcolor赋值即可动态改变颜色。

 

附录：

ViewController.h

////  ViewController.h//  ColourClock////  Created by Ben Gordon on 12/20/12.//  Copyright (c) 2012 Ben Gordon. All rights reserved.//#import <UIKit/UIKit.h>enum ClockType {    ClockTypeMilitary = 0,    ClockTypeHex = 1,    ClockTypeRGB = 2};@interface ViewController : UIViewController {        __weak IBOutlet UILabel *timeLabel;    __weak IBOutlet UILabel *appearanceType;        enum ClockType currentType;}- (IBAction)changeClockType:(id)sender;@end

ViewController.m

////  ViewController.m//  ColourClock////  Created by Ben Gordon on 12/20/12.//  Copyright (c) 2012 Ben Gordon. All rights reserved.//#import "ViewController.h"@interface ViewController ()@end@implementation ViewController#pragma mark - View Lifecycle- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.        currentType = ClockTypeMilitary;    [self changeColor];    }- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}#pragma mark - Change Colors-(void)changeColor {    // Set up date formatters for hour, min, seconds.    // Then create strings from the current date.    NSDateFormatter *formatHour = [[NSDateFormatter alloc] init];    NSDateFormatter *formatMin = [[NSDateFormatter alloc] init];    NSDateFormatter *formatSec = [[NSDateFormatter alloc] init];    [formatHour setDateFormat:@"HH"];    [formatMin setDateFormat:@"mm"];    [formatSec setDateFormat:@"ss"];    NSString *hour = [formatHour stringFromDate:[NSDate date]];    NSString *minute = [formatMin stringFromDate:[NSDate date]];    NSString *second = [formatSec stringFromDate:[NSDate date]];            // Create floats of the time value.    float hourFloat = [hour floatValue] * 255.0f / 23.0f;    float minFloat = [minute floatValue] * 255.0f / 59.0f;    float secFloat = [second floatValue] * 255.0f / 59.0f;            // Create unsigned ints for Hex translation    int32_t hourint = hourFloat + 0.5;    int32_t minint = minFloat + 0.5;    int32_t secint = secFloat + 0.5;            // Change text color so it's readable.    if (hourFloat > 200 && minFloat > 200 && secFloat > 200) {        timeLabel.textColor = [UIColor darkGrayColor];        appearanceType.textColor = [UIColor darkGrayColor];    }    else {        timeLabel.textColor = [UIColor whiteColor];        appearanceType.textColor = [UIColor whiteColor];    }            // Set Labels    if (currentType == ClockTypeMilitary) {        appearanceType.text = @"MILITARY TIME";        timeLabel.text = [NSString stringWithFormat:@"%@:%@:%@", hour, minute, second];    }    else if (currentType == ClockTypeHex) {        appearanceType.text = @"HEX COLOR CODE";        timeLabel.text = [NSString stringWithFormat:@"#%02X%02X%02X",hourint,minint,secint];    }    else {        appearanceType.text = @"RGB VALUES";        timeLabel.text = [NSString stringWithFormat:@"%.0f:%.0f:%.0f", hourFloat, minFloat, secFloat];    }            // Finally, change image to the right color    self.view.backgroundColor = [UIColor colorWithRed:(hourFloat/255.0f) green:(minFloat/255.0f) blue:(secFloat/255.0f) alpha:1.0];        // And do it all over again, every .05 seconds so it's more accurate    [self performSelector:@selector(changeColor) withObject:nil afterDelay:0.05];}#pragma mark - Change Clock Type- (IBAction)changeClockType:(id)sender {    currentType++;        if (currentType > ClockTypeRGB) {        currentType = ClockTypeMilitary;    }}@end