从动画UIImageView获取图像 [英] Fetching image From Animating UIImageView

问题描述

我使用动画方法在UIimageView中实现幻灯片显示：

I'm using animation method of for implementing slide show in UIimageView as:

mainSlideShowImageView.animationImages=images;
mainSlideShowImageView.animationDuration = 75.00; 
mainSlideShowImageView.animationRepeatCount = 0; //infinite
[mainSlideShowImageView startAnimating];

现在，我想要的是了解图片视图屏幕上当前的图片。

Now, what I want is to know which image is currently on image view screen.

如何这样做？

如果不可能，请告诉我们。

If it is not possible please tell that too.

编辑：'images'这里是UIImage的数组。

'images' here is array of UIImage.

推荐答案

AFAIK，没有方法返回imageview的当前图像，但是我为此创建了一个解决方法....

AFAIK, there is no method which returns imageview's current image , however I have created a workaround for this....

array= [NSArray arrayWithObjects:[UIImage imageNamed:@"1.jpg"],[UIImage imageNamed:@"2.jpg"],[UIImage imageNamed:@"3.jpg"],[UIImage imageNamed:@"4.jpg"],[UIImage imageNamed:@"5.jpg"],nil];
mainSlideShowImageView.animationImages= array;
mainSlideShowImageView.animationDuration=15.0;
i=0;
timer = [NSTimer scheduledTimerWithTimeInterval:3.0 target:self selector:@selector(increase) userInfo:nil repeats:YES];
[mainSlideShowImageView startAnimating];

-(void)increase
{
    i++;
    if (i>4) {
        i=0;
    }
}

-(void)getimage
{
    UIImage* im = [array objectAtIndex:i];
        // im is the current image of imageview

}

我已经拍了5张图片在这里，动画的持续时间为15，这意味着图像将每3秒更改，所以我保持定时器每3秒发射...因为数组包含5个图像...所以如果'i '超过4我已经把它回到0在方法增加

I have taken 5 images here and animation duration of 15 , that means image will change at every 3 seconds, so I have kept timer to fire at every 3 seconds ... and since array contains 5 images ... so if 'i' goes beyond 4 I have put it back to 0 in method increase

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