例子一：UITableViewCell Animation
UITableViewCell Demo下载：Demo
效果图：
演示Demo.gif
我们创建一个动画在tableViewCell上，首先添加一个放大的动画当我们点击cell的时候，当我们手离开屏幕的时候，我们用将cell上缩回原先的大小用spring animation；
重写cell中的setHighlighted方法，代码如下：
- (void)setHighlighted:(BOOL)highlighted animated:(BOOL)animated
{
[super setHighlighted:highlighted animated:animated];
if (self.highlighted) {
POPBasicAnimation *scaleAnimation = [POPBasicAnimation animationWithPropertyNamed:kPOPViewScaleXY];
//duration 持续时间
scaleAnimation.duration = 0.1;
//点击时，字体大小
scaleAnimation.toValue = [NSValue valueWithCGPoint:CGPointMake(1, 1)];
[self.titleLabel pop_addAnimation:scaleAnimation forKey:@"scalingUp"];
} else {
POPSpringAnimation *sprintAnimation = [POPSpringAnimation animationWithPropertyNamed:kPOPViewScaleXY];
//缩小的时候，字体大小
sprintAnimation.toValue = [NSValue valueWithCGPoint:CGPointMake(0.9, 0.9)];
//缩小后弹回字体本来大小
sprintAnimation.velocity = [NSValue valueWithCGPoint:CGPointMake(1, 1)];
//弹力值
sprintAnimation.springBounciness = 20.f;
[self.titleLabel pop_addAnimation:sprintAnimation forKey:@"springAnimation"];
}
}
Animating UIButton动画
UIButton Demo下载：Demo
效果图：
演示Demo.gif
实现UITextField的代理方法，在这个方法中我们可以监控用户输入和删除文字，内部的实现如下：
-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{
NSString *comment;
if(range.length == 0){
comment = [NSString stringWithFormat:@"%@%@", textField.text, string];
}else{
comment = [textField.text substringToIndex:textField.text.length - range.length];
}
if (comment.length == 0) {
[self setupZanBtn];
}else{
[self setupSendBtn];
}
return YES;
}
之后我们实现setupZanBtn和setuasendbtn
//发送按钮
-(void)setupSendBtn{
if (self.sendBtn.isHidden) {
self.zanBtn.hidden = YES;
self.sendBtn.hidden = NO;
POPSpringAnimation *sprintAnimation = [POPSpringAnimation animationWithPropertyNamed:kPOPViewScaleXY];
sprintAnimation.velocity = [NSValue valueWithCGPoint:CGPointMake(8, 8)];
sprintAnimation.springBounciness = 20.f;
[self.sendBtn pop_addAnimation:sprintAnimation forKey:@"sendAnimation"];
}
}
//赞按钮
-(void)setupZanBtn{
self.zanBtn.hidden = NO;
self.sendBtn.hidden = YES;
POPSpringAnimation *spin = [POPSpringAnimation animationWithPropertyNamed:kPOPLayerRotation];
spin.fromValue = @(M_PI / 4);
spin.toValue = @(0);
spin.springBounciness = 20;
spin.velocity = @(10);
[self.zanBtn.layer pop_addAnimation:spin forKey:@"likeAnimation"];
}
未完待续。。。
勤学如早春之苗，不见其增，日有所涨。
辍学如磨刀之石，不见其减，日有所损。
