Iphone 如何保存覆盖有标签的照片?
所以,我有数据,我想覆盖在一张照片时,它是采取。这是我的密码。有没有更简单的方法在照片上覆盖数据Iphone 如何保存覆盖有标签的照片?,iphone,ios,objective-c,ipad,ios5,Iphone,Ios,Objective C,Ipad,Ios5,所以,我有数据,我想覆盖在一张照片时,它是采取。这是我的密码。有没有更简单的方法在照片上覆盖数据 - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { UIImage *cameraImage = [info objectForKey:UIImagePickerControllerOrigi
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *cameraImage = [info objectForKey:UIImagePickerControllerOriginalImage];
UIImageView *imageViewToSave = [[UIImageView alloc] initWithImage:cameraImage];
CGRect textFrame = CGRectMake(0, 0, imageViewToSave.frame.size.width-20, 325);
UILabel *tempLabel = [[UILabel alloc] initWithFrame:textFrame];
tempLabel.text = self.temperatureText.text;
tempLabel.font = self.imageLabelFont;
tempLabel.adjustsFontSizeToFitWidth = YES;
tempLabel.textAlignment = NSTextAlignmentRight;
tempLabel.textColor = self.tempGreen;
tempLabel.backgroundColor = [UIColor clearColor];
[imageViewToSave addSubview:tempLabel];
UIGraphicsBeginImageContext(imageViewToSave.bounds.size);
[imageViewToSave.layer renderInContext:UIGraphicsGetCurrentContext()];
cameraImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
[self.library saveImage:cameraImage toAlbum:@"Node Therma" withCompletionBlock:^(NSError *error)
{
if (error!=nil)
{
NSLog(@"Big error: %@", [error description]);
}
}];
}刚刚测试过这个,它可以工作
- (UIImage *)imageWithBackground:(UIImage *)background text:(NSString *)text textColor:(UIColor *)textColor {
UIImageView *imageView = [[UIImageView alloc] initWithImage:background];
UIView *composition = [[UIView alloc] initWithFrame:imageView.bounds];
[composition addSubview:imageView];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(/* where you want the label */)];
label.text = text;
label.backgroundColor = [UIColor clearColor];
label.textColor = textColor;
[composition addSubview:label];
UIGraphicsBeginImageContext(composition.bounds.size);
[composition.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *composedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return composedImage;
}
与我的代码相比,您的代码似乎还可以,但请尝试使用新的局部变量 获取屏幕截图时,如下所示:
UIImage *cameraImage2 = UIGraphicsGetImageFromCurrentImageContext();
然后保存cameraImage2
还要确保self.tempGreen不是ClearColor