记录一个简单的动画效果，自己写的，很简单，仅做记录。
附一个demo的下载地址：
https:///hgl753951/hglTest.git
代码如下：
1，准备
BOOL _isOpen;
NSMutableArray * _btnArray;2，具体代码
-(void)initUI
{
_btnArray = [[NSMutableArray alloc]init];
for (int i=0; i<4; i++)
{
UIButton * btn = [UIButton buttonWithType:UIButtonTypeCustom];
btn.tag = i;
btn.frame = CGRectMake(260, 420, 40, 40);
[btn setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"c_setting%d",(i+1)%4]] forState:UIControlStateNormal];
[btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
[_btnArray addObject:btn];
}
}
-(void)btnClick:(UIButton *)btn
{
//如果没有打开
if (!_isOpen)
{
//打开九宫格
for (int i = 0; i < _btnArray.count; i++)
{
UIButton * myBtn = [_btnArray objectAtIndex:i];
[UIView animateWithDuration:0.3
animations:^{
myBtn.frame = CGRectMake(190+(i%2)*70, 350+70*(i/2), 40, 40);
}
completion:^(BOOL finished) {
[UIView animateWithDuration:0.3
animations:^{
myBtn.frame = CGRectMake(200+(i%2)*60, 360+(i/2)*60, 40, 40);
}];
}];
}
}
else
{
//关闭九宫格
for (int i = 0; i < _btnArray.count; i++)
{
UIButton * myBtn = [_btnArray objectAtIndex:i];
[UIView animateWithDuration:0.3
animations:^{
myBtn.frame = CGRectMake(190+(i%2)*70, 350+70*(i/2), 40, 40);
}
completion:^(BOOL finished) {
[UIView animateWithDuration:0.3
animations:^{
myBtn.frame = CGRectMake(260, 420, 40, 40);
}];
}];
}
}
_isOpen = !_isOpen;
}效果如下：
