Ios tableview cell.imageview未设置动画

我正在尝试设置默认情况下存在的

tableview

单元格的

imageview

的动画，我希望在单元格可见时仅对图像视图设置一次动画，为此我编写了以下代码

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *cellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];

    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
    }

    NSArray *myImageArray = [NSArray arrayWithObjects:
                             [UIImage imageNamed:[NSString stringWithFormat:@"wave6.png"]],
                             [UIImage imageNamed:[NSString stringWithFormat:@"wave7.png"]],
                             [UIImage imageNamed:[NSString stringWithFormat:@"wave8.png"]],
                             [UIImage imageNamed:[NSString stringWithFormat:@"wave9.png"]],
                             [UIImage imageNamed:[NSString stringWithFormat:@"wave10.png"]],nil];

        NSArray *titles = @[@"John Appleseed", @"John Doe", @"Test User",@"John Appleseed", @"John Doe", @"Test User",@"John Appleseed", @"John Doe", @"Test User",
                            @"Test User",@"John Appleseed", @"John Doe", @"Test User",@"John Appleseed", @"John Doe", @"Test User",@"John Appleseed", @"John Doe", @"Test User",
                            @"Test User"];
    [cell.imageView setAnimationImages:myImageArray];
    cell.imageView.animationDuration = 4.20;
    cell.imageView.animationRepeatCount = 1;
    [cell.imageView startAnimating];


            cell.textLabel.text = titles[indexPath.row];

    return cell;
}

---

1。删除cellforatindexpath中的动画代码

2。当单元格显示时设置动画

3。隐藏单元格时停止动画

4。将提高应用程序的性能

5。节省更多内存

    -(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{

        NSArray *myImageArray = [NSArray arrayWithObjects:
                                 [UIImage imageNamed:[NSString stringWithFormat:@"wave6.png"]],
                                 [UIImage imageNamed:[NSString stringWithFormat:@"wave7.png"]],
                                 [UIImage imageNamed:[NSString stringWithFormat:@"wave8.png"]],
                                 [UIImage imageNamed:[NSString stringWithFormat:@"wave9.png"]],
                                 [UIImage imageNamed:[NSString stringWithFormat:@"wave10.png"]],nil];

        [cell.imageView setAnimationImages:myImageArray];
        cell.imageView.animationDuration = 4.20;
        cell.imageView.animationRepeatCount = 1;
        [cell.imageView startAnimating];

    }

    -(void)tableView:(UITableView *)tableView didEndDisplayingCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{


        [cell.imageView stopAnimating];

        [cell.layer removeAllAnimations];

    }

而不是

 [NSString stringWithFormat:@"wave6.png"]

---

您可以像@“wave6.png”一样指定。删除cellforatindexpath中的动画代码

2。当单元格显示时设置动画

3。隐藏单元格时停止动画

4。将提高应用程序的性能

5。节省更多内存

    -(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{

        NSArray *myImageArray = [NSArray arrayWithObjects:
                                 [UIImage imageNamed:[NSString stringWithFormat:@"wave6.png"]],
                                 [UIImage imageNamed:[NSString stringWithFormat:@"wave7.png"]],
                                 [UIImage imageNamed:[NSString stringWithFormat:@"wave8.png"]],
                                 [UIImage imageNamed:[NSString stringWithFormat:@"wave9.png"]],
                                 [UIImage imageNamed:[NSString stringWithFormat:@"wave10.png"]],nil];

        [cell.imageView setAnimationImages:myImageArray];
        cell.imageView.animationDuration = 4.20;
        cell.imageView.animationRepeatCount = 1;
        [cell.imageView startAnimating];

    }

    -(void)tableView:(UITableView *)tableView didEndDisplayingCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{


        [cell.imageView stopAnimating];

        [cell.layer removeAllAnimations];

    }

而不是

 [NSString stringWithFormat:@"wave6.png"]

---

您可以像@“wave6.png”一样指定UIImageView的创建对象和附加单元contentView

UIImageView *imageView = [[UIImageView alloc] initWithFrame:imageFrame];
imageView.animationImages = myImageArray;
imageView.animationDuration = 4.20;
imageView.animationRepeatCount = 1;
imageView.image = [UIImage imageNamed:@"wave5.png"]
    ; // you can put any image
[imageView startAnimating];
[cell.contentView addSubview:imageView];

---

创建UIImageView的对象和附加单元contentView

UIImageView *imageView = [[UIImageView alloc] initWithFrame:imageFrame];
imageView.animationImages = myImageArray;
imageView.animationDuration = 4.20;
imageView.animationRepeatCount = 1;
imageView.image = [UIImage imageNamed:@"wave5.png"]
    ; // you can put any image
[imageView startAnimating];
[cell.contentView addSubview:imageView];

---

可以在自定义单元类中使用animate方法

像这样

@interface CustomCell ()

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        isAnimating = NO;
        [self startAni];
    }
    return self;
}

- (void)startAni{
    if (!isAnimating){
         isAnimating = YES;
    }
    //Animation Code here
}

- (void)stopAni{
    if (isAnimating){
         isAnimating = NO;
    }
    //Animation Code here
}

---

可以在自定义单元类中使用animate方法

像这样

@interface CustomCell ()

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        isAnimating = NO;
        [self startAni];
    }
    return self;
}

- (void)startAni{
    if (!isAnimating){
         isAnimating = YES;
    }
    //Animation Code here
}

- (void)stopAni{
    if (isAnimating){
         isAnimating = NO;
    }
    //Animation Code here
}

---

这与您的问题无关，但出于最佳实践-

cellforrowatinexpth

不是您应该创建或初始化任何数组的地方。最好将初始化代码放在

viewDidLoad

或其他位置。我尝试了您的解决方案。当我滚动下一行时，它对我很有效。你有没有检查过你是否给出了图片的正确名称？？图像是否存在于资源中？？首先将myimagearray与您的手机图像视图一起分配它与您的问题无关，但为了最佳实践-

cellforrowatinexpth

不是您应该创建或初始化任何阵列的地方。最好将您的初始化代码放入

viewDidLoad

或其他位置。我尝试了您的解决方案当我做下一行的滚动时，它对我很好。你有没有检查过你是否给出了图片的正确名称？？图像是否存在于资源中？？首先将myimagearray与您的细胞图像视图一起分配最初在可见细胞中图像必须存在，而向上滚动图像必须动画化，就像没有图像一样，并且图像必须缓慢出现。我们能做到这一点吗？@vijay。最初在可见细胞中图像必须存在，当向上滚动图像时，图像必须像没有图像一样动画化，并且图像必须缓慢地出现。我们能做到这一点吗？@vijay。