ios 动画实例详解

ios动画的实现方式多种多样，这里就只记录一下 beginanimations:context 。

在你调用 beginanimations:context:方法来启动一个动画后,动画并不会立即被执行,直 到你调用 uiview 类的 commitanimations 类方法。你对一个视图对象执行的介于 beginanimations:context:方法跟 commitanimations方法之间的操作(例如移动)会在 commitanimations 被执行后才会生效 。

实现效果图：

代码很简单，直接贴了，如下：

? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 // // viewcontroller.m // graphics // // created by aaron on 14b-5-29. // copyright (c) 2014年 the technology studio. all rights reserved. // #import "viewcontroller.h" @interface viewcontroller () @property(nonatomic,strong) uiimageview *imageview1; @property(nonatomic,strong) uiimageview *imageview2; @end @implementation viewcontroller - (void)viewdidload { [super viewdidload]; uiimage *image = [uiimage imagenamed:@"1.png"]; self.imageview1 = [[uiimageview alloc] initwithimage:image]; self.imageview2 = [[uiimageview alloc] initwithimage:image]; [self.imageview1 setframe:cgrectmake(0.0f, 0.0f, 100.0f, 100.0f)]; [self.imageview2 setframe:cgrectmake(220.0f, 350.0f, 100.0f, 100.0f)]; [self.view addsubview:self.imageview1]; [self.view addsubview:self.imageview2]; // [self starttopleftimageviewanimation]; // [self startbottomrightviewanimationafterdelay:2]; [self affinetransformscaleanimation]; [self affinetransformrotateanimation]; } //imageview2 animation -(void)starttopleftimageviewanimation{ [self.imageview1 setframe:cgrectmake(0.0f, 0.0f, 100.0f, 100.0f)]; [self.imageview1 setalpha:1.0f]; [uiview beginanimations:@"imageview1animation" context:(__bridge void*)self.imageview1]; [uiview setanimationduration:3.0f]; [uiview setanimationdelegate:self]; [uiview setanimationdidstopselector:@selector(imageviewdidstop:finished:context:)]; [self.imageview1 setframe:cgrectmake(220.0f, 350.0f, 100.0f, 100.0f)]; [self.imageview1 setalpha:0.0f]; [uiview commitanimations]; } -(void)imageviewdidstop:(nsstring*)paramanimationid finished:(nsnumber*)paramfinished context:(void*)paramcontext{ nslog(@"animationid = %@\n",paramanimationid); uiimageview *contextimageview = (__bridge uiimageview *)(paramcontext); nslog(@"contextimageview = %@",contextimageview); [contextimageview removefromsuperview]; } //imageview2 animation -(void)startbottomrightviewanimationafterdelay:(cgfloat)paramdelay{ [self.imageview2 setframe:cgrectmake(220.0f, 350.0f, 100.0f, 100.0f)]; [self.imageview2 setalpha:1.0f]; [uiview beginanimations:@"imageview2animation" context:(__bridge voidvoid *)(self.imageview2)]; [uiview setanimationduration:3.0f]; [uiview setanimationdelay:paramdelay]; [uiview setanimationdelegate:self]; [uiview setanimationdidstopselector:@selector(imageviewdidstop:finished:context:)]; [self.imageview2 setframe:cgrectmake(0.0f, 0.0f, 100.0f, 100.0f)]; [self.imageview2 setalpha:0.0f]; [uiview commitanimations]; } //imageview1 affinetransformscale animation -(void)affinetransformscaleanimation{ self.imageview1.center = self.view.center; self.imageview1.transform = cgaffinetransformidentity; [uiview beginanimations:nil context:null]; [uiview setanimationduration:5.0f]; self.imageview1.transform = cgaffinetransformmakescale(2.0f, 2.0f); [self.imageview1 setalpha:0.0f]; [uiview commitanimations]; } //imageview2 affinetransformrotate animation -(void)affinetransformrotateanimation{ self.imageview2.center = self.view.center; [uiview beginanimations:@"clockwiseanimation" context:null]; [uiview setanimationduration:5.0f]; [uiview setanimationdelegate:self]; [uiview setanimationdidstopselector:@selector(clockwiserotationstopped:finished:context:)]; self.imageview2.transform = cgaffinetransformmakerotation(90.0f*m_pi/180.f); [uiview commitanimations]; } -(void)clockwiserotationstopped:(nsstring*)paramanimationid finished:(nsnumber*)paramfinished context:(void*)paramcontext{ [uiview beginanimations:@"counterclockwiseanimation" context:null]; [uiview setanimationduration:5.0f]; self.imageview2.transform = cgaffinetransformidentity; [uiview commitanimations]; } @end

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原文链接：http://blog.csdn.net/chaoyuan899/article/details/27563413