小編給大家分享一下IOS圖片原生Graphics的示例分析,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!
一,效果圖。
二,工程圖。
三,代碼。
RootViewController.h
#import <UIKit/UIKit.h> @interface RootViewController : UIViewController @end
RootViewController.m
#import "RootViewController.h" @interface RootViewController () @end @implementation RootViewController - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization } return self; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. //背景圖 [self addView]; } #pragma -mark -functions //背景圖 -(void)addView { UIImageView *imageView=[[UIImageView alloc]initWithFrame:CGRectMake(50, 100, 44, 44)]; imageView.image=[self defaultImage]; [self.view addSubview:imageView]; } //圖片原生 -(UIImage *)defaultImage { static UIImage *defaultImage = nil; static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ UIGraphicsBeginImageContextWithOptions(CGSizeMake(20.f, 13.f), NO, 0.0f); [[UIColor blackColor] setFill]; [[UIBezierPath bezierPathWithRect:CGRectMake(0, 0, 20, 1)] fill]; [[UIBezierPath bezierPathWithRect:CGRectMake(0, 5, 20, 1)] fill]; [[UIBezierPath bezierPathWithRect:CGRectMake(0, 10, 20, 1)] fill]; [[UIColor whiteColor] setFill]; [[UIBezierPath bezierPathWithRect:CGRectMake(0, 1, 20, 2)] fill]; [[UIBezierPath bezierPathWithRect:CGRectMake(0, 6, 20, 2)] fill]; [[UIBezierPath bezierPathWithRect:CGRectMake(0, 11, 20, 2)] fill]; defaultImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); }); return defaultImage; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. }
以上是“IOS圖片原生Graphics的示例分析”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!
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