今天我的任务是将字节数组转换为图像
首先,我尝试将图像转换为字节数组:-
为了将图像转换为字节数组,我们首先要做的就是转换该特定图像[UIImage
] to NSData
.然后我们将其转换为NSData
到字节数组。这里我将给出示例代码,只需浏览...
//Converting UIImage to NSData
UIImage *image = [UIImage imageNamed: @"photo-04.jpg"];
NSData *imageData = UIImagePNGRepresentation(image);
//Converting NSData to Byte array
NSUInteger len = [imageData length];
NSLog(@"Byte Lendata1 %lu",(unsigned long)len);
Byte *byteData = (Byte*)malloc(len);
memcpy(byteData, [imageData bytes], len);
我尝试这样将字节转换为 imageView
const unsigned char *bytes = [imageData bytes];
NSUInteger length = [imageData length];
NSMutableArray *byteArray = [NSMutableArray array];
for (NSUInteger i = 0; i < length; i++) {
[byteArray addObject:[NSNumber numberWithUnsignedChar:bytes[i]]];
}
NSDictionary *dictJson = [NSDictionary dictionaryWithObjectsAndKeys:
byteArray, @"photo",
nil];
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dictJson options:0 error:NULL];
NSLog(@"");
UIImage *image1 = [UIImage imageWithData:jsonData];
UIImageView *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 10, 100, 50)];
imgView.image=image1;
我得到输出将图像转换为字节数组,但我想将字节数组转换为图像
所以请帮助我提前致谢。
首先,您需要将字节转换为NSData
NSData *imageData = [NSData dataWithBytes:bytesData length:length];
然后,将数据转换回图像。
UIImage *image = [UIImage imageWithData:imageData];
我建议您在出现问题时首先查找文档。
这是全部:
UIImage *image = [UIImage imageNamed:@"RAC.png"];
NSData *imageData = UIImagePNGRepresentation(image);
// UIImageJPGRepresentation also work
NSInteger length = [imageData length];
Byte *byteData = (Byte*)malloc(length);
memcpy(byteData, [imageData bytes], length);
NSData *newData = [NSData dataWithBytes:byteData length:length];
UIImage *newImage = [UIImage imageWithData:newData];
UIImageView *imageView = [[UIImageView alloc] initWithImage:newImage];
imageView.frame = CGRectMake(50, 50, 100, 100);
[self.view addSubview:imageView];
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