增加反射iCarousel

Question

我试图反映添加到我的icarousel。首先我的代码是这样的，它正在工作赖特。

- (UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSUInteger)index  reusingView:(UIView *)view 
{ 
UIButton* button = (UIButton *)view; 
if (button == nil) 
{ 
    //no button available to recycle, so create new one 
    UIImage *image = [arrKitapKapaklari objectAtIndex:index]; 
    button = [UIButton buttonWithType:UIButtonTypeCustom]; 
    button.frame = CGRectMake(0.0f, 0.0f, image.size.width, image.size.height); 
    [button setTitleColor:[UIColor clearColor] forState:UIControlStateNormal]; 
    [button setBackgroundImage:image forState:UIControlStateNormal]; 
    button.titleLabel.font = [button.titleLabel.font fontWithSize:50]; 
    [button addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside]; 
} 


//set button label 
[button setTitle:[NSString stringWithFormat:@"%i", index] forState:UIControlStateNormal]; 

return button; 

}

改变后，我的代码变成这个样子：出现

- (UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSUInteger)index reusingView:(ReflectionView *)view 
{ 


UIButton* button = nil; 
if (button == nil) 
{ 

    view = [[[ReflectionView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 150.0f, 200.0f)] autorelease]; 
    //no button available to recycle, so create new one 
    UIImage *image = [arrKitapKapaklari objectAtIndex:index]; 
    button = [UIButton buttonWithType:UIButtonTypeCustom]; 
    button.frame = CGRectMake(0.0f, 0.0f, image.size.width, image.size.height); 
    [button setTitleColor:[UIColor clearColor] forState:UIControlStateNormal]; 
    [button setBackgroundImage:image forState:UIControlStateNormal]; 
    button.titleLabel.font = [button.titleLabel.font fontWithSize:50]; 
    [button addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside]; 
     [view addSubview:button]; 
} 



//set button label 
[button setTitle:[NSString stringWithFormat:@"%i", index] forState:UIControlStateNormal]; 
[view update]; 
return view; 

}

反思。但问题是当我移动旋转木马视图时，图像流动不正确。有时会出现另一个轮播视图。

你知道是什么原因造成的吗？

Answer 1

我用反射建于他们的图像...不需要做任何的代码方式..：对

Answer 2

代码应该是：

- (UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSUInteger)index reusingView:(ReflectionView *)view 
{ 


UIButton* button = nil; 
if (view == nil) 
{ 
     //no view available to recycle, so create new one 
    view = [[[ReflectionView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 150.0f, 200.0f)] autorelease]; 

    button = [UIButton buttonWithType:UIButtonTypeCustom]; 
    button.frame = view.bounds; 
    [button setTitleColor:[UIColor clearColor] forState:UIControlStateNormal]; 
    button.titleLabel.font = [button.titleLabel.font fontWithSize:50]; 
    [button addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside]; 
      button.tag = 99; 
     [view addSubview:button]; 
} 
else 
{ 
    button = (UIButton *)[view viewWithTag:99]; 
} 

//set button label 
[button setTitle:[NSString stringWithFormat:@"%i", index] forState:UIControlStateNormal]; 

UIImage *image = [arrKitapKapaklari objectAtIndex:index]; 
[button setBackgroundImage:image forState:UIControlStateNormal]; 

[view update]; 
return view; 
} 

Answer 3

我发现我错了。我在这里加载图片： - （无效）{getImagesWithThread NSAutoreleasePool *池; pool = [[NSAutoreleasePool alloc] init];

//for(int i=0;i<bookCount;i++){ 
for(int i=0;i<bookCount;i++){ 

    NSData * imageData = [[NSData alloc] initWithContentsOfURL: [NSURL URLWithString:  [arrBookImages objectAtIndex:i]]]; 
    UIImage *image = [[UIImage imageWithData: imageData] retain]; 

    image = [self scaleToSize:CGSizeMake(140, 200) withImage:image]; 

    if(image!=nil) [arrBookImages replaceObjectAtIndex:i withObject:image]; 



    [image release]; } 

[carousel reloadData];

[pool drain];

} 当我在后台执行此操作时，它没有正确重新加载。如果我正常运行，它就可以工作。但我想加载它们在一个线程中。我的意思是首先我想设置图像并从url中替换它们的图像。但我希望他们一个一个出现。你有什么主意吗？