我尝试先上传一张图片,然后在上面写一段文字,然后将这两个项目保存为一张图片。 我是 Objective C 的新手,所以我的代码可能不是实现目标的最佳方式,任何帮助和建议都会对我有所帮助。 谢谢你们 这是我的代码:
这个编辑器为什么不允许我把我的方法声明放在 在这里输入代码
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
NSData *data = UIImagePNGRepresentation(image);
NSString *mijnImage =@"mijnImage.png";
NSArray *route = NSSearchPathForDirectoriesInDomains(NSDocumentationDirectory, NSUserDomainMask, YES);
NSString *imageRoute = [route objectAtIndex:0];
NSString *routeNaarDeBestaand = [imageRoute stringByAppendingPathComponent:mijnImage];
[data writeToFile:routeNaarDeBestaand atomically:YES];
[[self imageView]setImage:image];
[self dismissViewControllerAnimated:YES completion:Nil];
self.imageView.image = [self drawText:@"Test String" inImage:image atPoint:CGPointMake(10, 20)];
这是另一个方法声明同样的问题编辑不允许我把它放在
UIFont *font = [UIFont boldSystemFontOfSize:100];
UIGraphicsBeginImageContext(self.view.frame.size);
[originalImage drawInRect:CGRectMake(0,0,self.view.frame.size.width,self.view.frame.size.height)];
CGRect rect = CGRectMake(point.x, point.y,lblText.frame.size.width, lblText.frame.size.height);
rect.size = [text sizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:150.0f]}];
NSMutableDictionary *attributes = [[NSMutableDictionary alloc] init];
[attributes setObject:font forKey:NSFontAttributeName];
[attributes setObject:[NSNumber numberWithFloat:4] forKey:NSStrokeWidthAttributeName];
[attributes setObject:[UIColor whiteColor] forKey:NSStrokeColorAttributeName];
[text drawInRect:rect withAttributes:attributes];
[attributes removeObjectForKey:NSStrokeWidthAttributeName];
[attributes removeObjectForKey:NSStrokeColorAttributeName];
[attributes setObject:[UIColor blackColor] forKey:NSForegroundColorAttributeName];
[text drawInRect:rect withAttributes:attributes];
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
最佳答案
我真的不知道是什么问题,但我这样做了..让我知道它是否适合你
- (void)viewDidLoad
{
UIImage *image = [UIImage imageNamed:@"image"];
UIImage *newImage = [self image:image withText:@"Hello World" atPoint:CGPointMake(20, 20)];
[self saveImage:image withName:@"original"];
[self saveImage:newImage withName:@"new"];
}
- (UIImage*)image:(UIImage*)image withText:(NSString*)text atPoint:(CGPoint)point
{
CGRect rect = CGRectMake(0, 0, image.size.width, image.size.height);
UIGraphicsBeginImageContextWithOptions(rect.size, NO, 0);
[image drawInRect:rect];
NSDictionary *attributes = @{NSFontAttributeName : [UIFont boldSystemFontOfSize:20],
NSStrokeWidthAttributeName : @(4),
NSStrokeColorAttributeName : [UIColor whiteColor]};
[text drawAtPoint:point withAttributes:attributes];
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}
- (void)saveImage:(UIImage*)image withName:(NSString*)name
{
NSString *documents = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
NSString *imagePath = [documents stringByAppendingPathComponent:name];
[UIImagePNGRepresentation(image) writeToFile:imagePath atomically:YES];
}
关于ios - 如何在图片上写文字并保存,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20961088/