我正在尝试UIImageView调整该图像的大小并显示它。然后我想将该图像分解成更小的部分并显示它们。
调整大小的图像显示正确，但“拆分”的图像似乎太大；我认为它们来自原始（稍大）图像。以下屏幕截图显示了左侧调整大小的图像和左侧的一列拆分图像。
调整大小的图像正确显示而较小的图像没有让我感到困惑。任何想法都会受到赞赏 - 甚至是替代方案。这是我的代码：
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
width = imgOriginal.frame.size.width;
height = imgOriginal.frame.size.height;
whratio = width/height;
[self getOriginalImageInfo];
[self resizeImage];
resizedImage = [self resizeImage];
}
-(void) getOriginalImageInfo {
lblWidth.text = [NSString stringWithFormat:@"%0.2f", width];
lblHeight.text = [NSString stringWithFormat:@"%0.2f", height];
lblWHRatio.text = [NSString stringWithFormat:@"%0.2f", whratio];
}
-(UIImageView*) resizeImage {
if (whratio >= 0.7 && whratio <=0.89) {
imgOriginal.frame = CGRectMake(20, 20, 500, 600);
imgOriginal.autoresizingMask = NO;
float resizedWHRatio = (imgOriginal.frame.size.width)/(imgOriginal.frame.size.height);
lblResizedWidth.text = [NSString stringWithFormat:@"%0.2f", imgOriginal.frame.size.width];
lblResizedHeight.text = [NSString stringWithFormat:@"%0.2f", imgOriginal.frame.size.height];
lblResizedWHRatio.text = [NSString stringWithFormat:@"%0.2f", resizedWHRatio];
return imgOriginal;
}
return nil;
}
- (IBAction)easyPressed:(id)sender {
NSLog(@"Easy button pressed");
CGImageRef original = [resizedImage.image CGImage];
float pieceWidth = (resizedImage.frame.size.width) / 5;
float pieceHeight = (resizedImage.frame.size.height) / 6;
for (int i =0; i<6; i++) {
CGRect rectangle = CGRectMake(0, 0+((float)i*pieceHeight), pieceWidth, pieceHeight);
CGImageRef newTile = CGImageCreateWithImageInRect(original, rectangle);
UIImageView *puzzlePiece = [[UIImageView alloc] initWithFrame:CGRectMake(611, 20+((float)i*pieceHeight), pieceWidth, pieceHeight)];
puzzlePiece.tag = i+1;
puzzlePiece.image = [UIImage imageWithCGImage:newTile];
puzzlePiece.alpha = 0.5;
[puzzlePiece.layer setBorderColor: [[UIColor blackColor] CGColor]];
[puzzlePiece.layer setBorderWidth: 1.0];
[self.view addSubview:puzzlePiece];
}
}