我有一个图像(captureImage),由相机拍摄并调整大小。我使用UIImageJPEGRepresentation
压缩图像,压缩后,图像的大小增加。这是正常的行为还是我以错误的方式进行压缩/调整大小?
if let image = captureImage {
print(image.size) // (700, 700)
let compressedImageData = UIImageJPEGRepresentation(image, 0.3)!
let compressedImage = UIImage(data: compressedImageData)!
print(compressedImage.size) // (3024, 3024)
}
答案 0 :(得分:0)
是的,此代码用于图像压缩
let compressedImageData = UIImageJPEGRepresentation(image, 0.3)!
获取文件大小的一种方法是保存到文档目录中。 例如 -
let filePath = fileURL
var fileSize : UInt64
do {
//return [FileAttributeKey : Any]
let attr = try FileManager.default.attributesOfItem(atPath: filePath.path)
fileSize = attr[FileAttributeKey.size] as! UInt64
//if you convert to NSDictionary, you can get file size old way as well.
let dict = attr as NSDictionary
fileSize = dict.fileSize()
print(fileSize)
} catch {
print("Error: \(error)")
}