旋转动画xcode iphone

概述我试图使用 xcode中的简单单一视图应用程序围绕圆圈旋转图像.我在主故事板上有一个圆圈图像和一个按钮.我使用下面的代码,但圆形图像向下漂移,然后向左旋转,随着它的旋转.我不确定它缺少什么. 谢谢你的帮助. ViewController.h #import <UIKit/UIKit.h> @interface ViewController : UIViewController { 我试图使用 xcode中的简单单一视图应用程序围绕圆圈旋转图像.我在主故事板上有一个圆圈图像和一个按钮.我使用下面的代码,但圆形图像向下漂移,然后向左旋转,随着它的旋转.我不确定它缺少什么.

谢谢你的帮助.

VIEwController.h

#import <UIKit/UIKit.h> @interface VIEwController : UIVIEwController {         IBOutlet UIImageVIEw *theImageVIEw;         IBOutlet UIbutton    *thebutton;         NSTimer              *theTimer;         float        angle;         BOol         runStop;     } @property (atomic,retain) IBOutlet UIImageVIEw *theImageVIEw; @property (atomic,retain) IBOutlet UIbutton    *thebutton; -(IBAction)runRoulette:(ID)sender; @end

VIEwController.m

#import "VIEwController.h"@interface VIEwController ()@end@implementation VIEwController@synthesize thebutton,theImageVIEw;- (voID)vIEwDIDLoad{    angle = 0;    runStop = FALSE;    [super vIEwDIDLoad];    // Do any additional setup after loading the vIEw,typically from a nib.}- (voID)dIDReceiveMemoryWarning{    [super dIDReceiveMemoryWarning];    // dispose of any resources that can be recreated.}-(voID)rotateRoulette{    theImageVIEw.center = CGPointMake(self.theImageVIEw.center.x,self.theImageVIEw.center.y);    theImageVIEw.transform=CGAffinetransformMakeRotation (angle);    angle+=0.001;}-(IBAction)runRoulette:(ID)sender{    if(!runStop)    {        theTimer = [NSTimer scheduledTimerWithTimeInterval:1.0/600.0 target:self selector:@selector(rotateRoulette) userInfo:nil repeats:YES];    }    else    {        [theTimer invalIDate];        theTimer = nil;    }    runStop = !runStop;}@end

解决方法 我找到了一种非常简单的方法来让我的动画工作我也想要它 –

theImageVIEw.center = CGPointMake(160.0,364.0);[UIVIEw beginAnimations:nil context:NulL];[UIVIEw setAnimationDuration:5];//theImageVIEw.center=CGPointMake(self.theImageVIEw.center.x,self.theImageVIEw.center.y);theImageVIEw.transform = CGAffinetransformMakeRotation(M_PI/2.65);[UIVIEw commitAnimations];

它旋转theImageVIEw M_PI / 2.65(M_PI / 2.65是roataion数量),计数为5.

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