UIView

UIVIew

案例(咻一咻)

-(void)setupUI {
    //设置背景颜色
    self.view.backgroundColor = [UIColor colorWithRed:26/255.0 green:28/255.0 blue:49/255.0 alpha:1];
    
    //创建button
    UIButton *btn = [[UIButton alloc] init];
    //设置btn属性
    [btn setImage:[UIImage imageNamed:@"alipay_msp_op_success"] forState:UIControlStateNormal];
    [btn sizeToFit];
    btn.center = self.view.center;
    //添加到父容器
    [self.view addSubview:btn];
    //添加点击事件
    [btn addTarget:self action:@selector(show:) forControlEvents:UIControlEventTouchUpInside];
    //添加圆
    UIView *circleView = [self createCircle];
    [self.view insertSubview:circleView atIndex:0];
}

-(void)show:(UIButton *)button {
    //禁用交互
    button.enabled = NO;
    for (int i = 0; i < 20; i++) {
        
        //创建圆
        UIView *v = [self createCircle];
        //添加到父容器
        [self.view insertSubview:v atIndex:0];
        //动画效果
        [UIView animateWithDuration:2 delay:0.5 * i options:0 animations:^{
            v.transform = CGAffineTransformMakeScale(5,5);
            v.alpha = 0;
            v.backgroundColor = self.view.backgroundColor;
        } completion:^(BOOL finished) {
            [v removeFromSuperview];
        }];
    }
}

//创建view
-(UIView *)createCircle {
    //创建view
    UIView *v = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
    //设置属性
    v.backgroundColor = [UIColor colorWithRed:47/255.0 green:167/255.0 blue:244/255.0 alpha:1];
    v.center = self.view.center;
    v.layer.cornerRadius = 50;
   //返回view
    return v;
}