弹出圆角Label，然后隐藏Label

弹出圆角Label，然后隐藏Label

- (void)appCellDidClickedDownloadBtn:(MJAppCell *)cell

{

    // 1.取出模型

    MJApp *app = cell.app;

    

    // 2.添加标签

    UILabel *label = [[UILabel alloc] init];

    label.text = [NSString stringWithFormat:@"成功下载%@", app.name];

    label.font = [UIFont systemFontOfSize:12];

    label.textAlignment = NSTextAlignmentCenter;

    label.textColor = [UIColor whiteColor];

    label.backgroundColor = [UIColor blackColor];

    label.frame = CGRectMake(0, 0, 150, 25);

    label.center = CGPointMake(160, 240);

    label.alpha = 0.0;

    label.layer.cornerRadius = 5;

    label.clipsToBounds = YES;

    [self.view addSubview:label];

    

    // 3.动画

    [UIView animateWithDuration:0.5 animations:^{

        label.alpha = 0.5;

    } completion:^(BOOL finished) {

        [UIView animateWithDuration:0.5 delay:0.5 options:UIViewAnimationOptionCurveLinear animations:^{

            label.alpha = 0.0;

        } completion:^(BOOL finished) {

            [label removeFromSuperview];

        }];

    }];

}