一,效果图。
images/loading.gif' data-original="http://images2015.cnblogs.com/blog/337518/201510/337518-20151014145913476-1430101902.jpg" width="218" height="400" />
二,工程图。
三,代码.
ViewController.h
#import <UIKit/UIKit.h>@interface ViewController : UIViewController@end
ViewController.m
#import "ViewController.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. //UIView UIView *view=[[UIView alloc]initWithFrame:CGRectMake(10, 100, 200, 200)]; view.backgroundColor=[UIColor redColor]; [self.view addSubview:view]; //淡出 //[self fadeOut:view]; //淡入 //[self fadeIn:view]; }//淡出-(void) fadeOut:(UIView *)view{ CGContextRef context = UIGraphicsGetCurrentContext(); [UIView beginAnimations:nil context:context]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDuration:0.3]; [view setAlpha:0.0f]; [UIView commitAnimations];}//淡入-(void) fadeIn:(UIView *)view{ CGContextRef context = UIGraphicsGetCurrentContext(); [UIView beginAnimations:nil context:context]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDuration:0.3]; [view setAlpha:1.0f]; [UIView commitAnimations];}- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}
原标题:【代码笔记】淡出淡入效果
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