Question

我正在使用多个iCarousels，并希望从目录中导入图片。我在顶部有iCarousel 1，底部有iCarousel 2。我在iOS设备的目录中有大约6个文件夹，用户已经拍摄了照片。我想将iCarousel 1分配到目录“apple”，将iCarousel 2分配到目录“green”。

以下是我的代码，直到现在。但是，当然，由于我正在为2个imageArrays设置路径，因此会出现“重新定义...”的错误。我该如何使这段代码更简单？

此外，我还在'NSMutableArray *_strong' from 'NSArray *_strong'行警告imageArray2 = directoryContent;。我真的想让这一切都有效。

- (void)viewDidLoad
{
    [super viewDidLoad];

    //configure carousel
    imageArray1 = (NSMutableArray *)[[NSFileManagerdefaultManager] directoryContentsAtPath: fPath];
    NSString *location=@"apple";
    NSString *fPath = [documentsDirectory stringByAppendingPathComponent:location];
    NSArray *directoryContent = [[NSFileManager defaultManager] directoryContentsAtPath: fPath];
    imageArray1 = directoryContent;

    imageArray2 = [[NSMutableArray alloc] init];
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *location=@"green";
    NSString *fPath = [documentsDirectory stringByAppendingPathComponent:location];

    NSArray * directoryContent = [[NSFileManager defaultManager] directoryContentsAtPath: fPath];
    imageArray2 = directoryContent;

    carousel1.type = iCarouselTypeLinear;
    carousel2.type = iCarouselTypeLinear;
}

Answer 1

你要两次声明一些变量。

你可以这样做：

-(void)viewDidLoad
{
   [super viewDidLoad];

   //configure carousel
   imageArray1 = (NSMutableArray *)[[NSFileManager defaultManager] directoryContentsAtPath: fPath];
   NSString *location=@"apple";
   NSString *fPath = [documentsDirectory stringByAppendingPathComponent:location];
   NSArray *directoryContent = [[NSFileManager defaultManager] directoryContentsAtPath: fPath];
   imageArray1 = [directoryContent mutableCopy];

   imageArray2 = [[NSMutableArray alloc] init];
   NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
   NSString *documentsDirectory = [paths objectAtIndex:0];
   location=@"green";
   fPath = [documentsDirectory stringByAppendingPathComponent:location];

   directoryContent = [[NSFileManager defaultManager] directoryContentsAtPath: fPath];
   imageArray2 = [directoryContent mutableCopy];

   carousel1.type = iCarouselTypeLinear;
   carousel2.type = iCarouselTypeLinear;
}

使用多个轮播时出错

1 个答案: