ios開發之--簡單動畫效果的添加

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記錄一個簡單的動畫效果，自己寫的，很簡單，僅做記錄。

附一個demo的：

https://github.com/hgl753951/hglTest.git

代碼如下：

1，準備

BOOL _isOpen;    NSMutableArray * _btnArray;

2，具體代碼

-(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{    //如果沒有開啟    if (!_isOpen)    {        //開啟九宮格        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    {        //關閉九宮格        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：

 

ios開發之--簡單動畫效果的添加