iOS開發點擊UIButton實現UIView的旋轉

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首先創建界面，在viewDidLoad創建view以及button

相關代碼如下?

-(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:@"點擊旋轉" forState:UIControlStateNormal];[self.view addSubview:btn];btn.tag = 10010;[btn addTarget:self action:@selector(testViewDemo) forControlEvents:UIControlEventTouchUpInside];[btn release];number = 0;}

更多閱讀請訪問http://www.hopean.com

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首先button的點擊方法實現

-(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 {//旋轉,左旋number++;CGAffineTransform rotate = CGAffineTransformMakeRotation(number / 180.0 * M_PI );[viewDemo setTransform:rotate]; }

如果使用此方法連續點擊button就可以顯示處一點一點的移動效果

每次旋轉90度的話可以使用一下的代碼實現效果

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

?UIView實現左旋效果

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

?

更多閱讀請訪問http://www.hopean.com

http://www.hopean.com

轉載于:https://www.cnblogs.com/hopeanCom/archive/2012/11/28/2792127.html

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