IOS学习笔记（三）UIView animation
iphone中动画的实现主要分为两种，UIView动画 和Core Animation动画
UIView动画主要可以实现的效果包括：
1.frame,bounds,center//改变View的frame属性
1 -(void)doChangeFrame 2 { 3 //{ 4 // [UIView beginAnimations:nil context:nil]; 5 // [UIView setAnimationDuration:2]; 6 // [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; 7 // [UIView setAnimationDelegate:self]; 8 // [UIView setAnimationDidStopSelector:@selector(stopDelegate)]; 9 // smallImage.frame = CGRectMake(150, 80, 30, 30); 10 // 11 // //smallImage.alpha = 0; 12 // [UIView commitAnimations]; 13 14 [UIView animateWithDuration:2.0 animations:^(void){smallImage.frame = CGRectMake(150, 80, 30, 30);} completion:^(BOOL finished) { 15 smallImage.alpha = 0; 16 }]; 17 //块语句定义及使用方法 18 /*int (^myBlock )(int num) = ^(int num) 19 { 20 return num*2; 21 }; 22 NSLog(@"%d",myBlock(7));*/ 23 }
2.alpha //改变透明度
3.backgroundColor //改变背景颜色
4.contentStretch //拉伸变化
5.transform //仿射变换，其中又包括Rotate，Invert，Translate，Scale（旋转，反转，位移，缩放）
1 -(void)doRotate//旋转 2 { 3 CGAffineTransform transform= CGAffineTransformMakeRotation(M_PI/4); 4 5 [UIView beginAnimations:nil context:nil]; 6 bigImage.transform = transform; 7 [UIView commitAnimations]; 8 }
1 -(void)doInvert//反转 2 { 3 BOOL isSingle = seg.selectedSegmentIndex; 4 //如果单次 直接翻转到原始状态 如果连续 在以前基础上再次进行反转 5 6 CGAffineTransform transform = isSingle?CGAffineTransformInvert(bigImage.transform):CGAffineTransformIdentity; 7 8 [UIView beginAnimations:nil context:nil]; 9 bigImage.transform = transform; 10 [UIView commitAnimations]; 11 }
1 -(void)doTranslate//位移 2 { 3 BOOL isSingle = seg.selectedSegmentIndex; 4 //如果单次 只改变一次 如果连续 在以前基础上再次进行移位 5 CGAffineTransform transform = isSingle?CGAffineTransformMakeTranslation(10, 10):CGAffineTransformTranslate(bigImage.transform, 10, 10); 6 7 // [UIView beginAnimations:nil context:nil]; 8 // bigImage.transform = transform; 9 // [UIView commitAnimations]; 10 [UIView animateWithDuration:1 animations:^{ 11 bigImage.transform = transform; 12 }]; 13 }
1 -(void)doScale//缩放 2 { 3 BOOL isSingle = seg.selectedSegmentIndex; 4 //如果单次 只改变一次 如果连续 在以前基础上再次进行缩放 5 CGAffineTransform transform = isSingle?CGAffineTransformMakeScale(1.0, 1.1):CGAffineTransformScale(bigImage.transform, 1.0, 1.1); 6 7 [UIView beginAnimations:nil context:nil]; 8 bigImage.transform = transform; 9 [UIView commitAnimations]; 10 11 }
