iOS开发点击UIButton实现UIView的旋转

iOS开发点击UIButton实现UIView的旋转

更多阅读请访问http://www.hopean.com

http://www.hopean.com

首先创建界面，在viewDidLoad创建view以及button

相关代码如下 

-(void)viewDidLoad {[super viewDidLoad];viewDemo = [[UIView alloc] initWithFrame:CGRectMake(0, 50, 320, 50)];[viewDemo setBackgroundColor:[UIColor brownColor]];UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 100, 50)];label.text =@"Test";label.tag=100;[viewDemo addSubview:label];[self.view addSubview:viewDemo];[label release];// Do any additional setup after loading the view, typically from a nib.UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(0, 400, 100, 50)];[btn setBackgroundColor:[UIColor blueColor]];btn.showsTouchWhenHighlighted = YES;[btn setTitle:@"点击旋转" forState:UIControlStateNormal];[self.view addSubview:btn];btn.tag = 10010;[btn addTarget:self action:@selector(testViewDemo) forControlEvents:UIControlEventTouchUpInside];[btn release];number = 0;}

更多阅读请访问http://www.hopean.com

http://www.hopean.com

首先button的点击方法实现

-(void)testViewDemo {number++;if (number%3 == 0) {CGAffineTransform at = CGAffineTransformMakeRotation(M_PI/2);at = CGAffineTransformTranslate(at, 200, 0);[viewDemo setTransform:at];}else if (number%3 ==1 ){CGAffineTransform at = CGAffineTransformMakeRotation(M_PI/1);at = CGAffineTransformTranslate(at, 0, 0);[viewDemo setTransform:at];}else if(number%3 ==2){CGAffineTransform at = CGAffineTransformMakeRotation(M_PI*2);at = CGAffineTransformTranslate(at, 0, 0);[viewDemo setTransform:at];} }
-(void)testViewDemo {//旋转,左旋number++;CGAffineTransform rotate = CGAffineTransformMakeRotation(number / 180.0 * M_PI );[viewDemo setTransform:rotate]; }

如果使用此方法连续点击button就可以显示处一点一点的移动效果

每次旋转90度的话可以使用一下的代码实现效果

-(void)testViewDemo { //旋转,右旋number = number+90.0;CGAffineTransform rotate = CGAffineTransformMakeRotation(number / 180.0 * M_PI );[viewDemo setTransform:rotate];
｝

 UIView实现左旋效果

//旋转,左旋number = number-90.0;CGAffineTransform rotate = CGAffineTransformMakeRotation(number / 180.0 * M_PI );[viewDemo setTransform:rotate];

 

更多阅读请访问http://www.hopean.com

http://www.hopean.com

转载于:https://www.cnblogs.com/hopeanCom/archive/2012/11/28/2792127.html

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