Question

基本上，我试图模拟一个从小开始但逐渐扩大直到它占据整个屏幕的爆炸。

-(void)Dying{
    [BirdMovement invalidate];
    [TunnelMovement invalidate];
    [TunnelMovement2 invalidate];
    [TunnelMovement3 invalidate];
    [TunnelMovement4 invalidate];
    [BirdMovement_orange invalidate];
    [BirdMovement_yellow invalidate];
    [BirdMovement_green invalidate];
    [BirdMovement_blue invalidate];

    [self.window makeKeyAndVisible];


    Bird.frame=CGRectMake(Bird.center.x,Bird.center.y,23,37);

    Bird.animationImages = [NSArray arrayWithObjects:

                        [UIImage imageNamed:@"Explode1.png"],
                        [UIImage imageNamed:@"Explode2.png"],
                        [UIImage imageNamed:@"Explode3.png"],
                        [UIImage imageNamed:@"Explode4.png"]

                        , nil];

    Bird.animationDuration = 3;
    Bird.animationRepeatCount = 1;
    [Bird startAnimating];

    [self.window addSubview:Bird];

    [self performSelector:@selector(Dead) withObject:nil afterDelay:2.0];

}

-(void)Dead{

    [Bird stopAnimating];
    [self GameOver];
}

我尝试弄乱CGRectMake说

这样的话

[Bird.frame=CGRectMake(Bird.center.x,Bird.center.y,23   +5  ,37   +5);]

但显然这不会起作用，因为它只是制造它（28,42）。

Answer 1

这会将您的imageView动画设置为3秒以上的新尺寸。

UIImageView * bird = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 50, 50)];

bird.animationImages = @[
                         [UIImage imageNamed:@"bird1"],
                         [UIImage imageNamed:@"bird2"],
                         [UIImage imageNamed:@"bird3"],
                         [UIImage imageNamed:@"bird4"],
                         [UIImage imageNamed:@"bird5"]
                         ];

[self.view addSubview:bird];

[bird startAnimating];

[UIView animateWithDuration:2 animations:^{

    bird.frame = CGRectMake(0, 0, 200, 200);

}];

如何在动画期间使图像大小增大

1 个答案: