IOS UIButton与动画gif图像

Question

如何将动画gif文件添加为UIButton的默认图像.我已经添加了gif文件作为按钮图像.但它不是动画.

谢谢.

Answer 1

动画GIF不会在iphone中动画.你应该将UIImageView作为子视图添加到UIButton,从GIF中提取所有图像并使用UIImageView动画制作动画

UIImageView* animatedImageView = [[UIImageView alloc] initWithFrame:self.view.bounds];
animatedImageView.animationImages = [NSArray arrayWithObjects:    
                               [UIImage imageNamed:@"image1.gif"],
                               [UIImage imageNamed:@"image2.gif"],
                               [UIImage imageNamed:@"image3.gif"],
                               [UIImage imageNamed:@"image4.gif"], nil];
animatedImageView.animationDuration = 1.0f;
animatedImageView.animationRepeatCount = 0;
[animatedImageView startAnimating];
[yourButton addSubview: animatedImageView];