拍照後裁剪

Question

我正在使用Allowsedditing裁剪我在應用中拍攝的照片，但它不能正常工作，因爲它彈回了。有沒有做這個任務？我被告知應該使用GKIIMagePicker，但它不起作用。我應該怎麼做？

- (IBAction)takePhoto:(UIButton *)sender { 

    UIImagePickerController *picker = [[UIImagePickerController alloc] init]; 
    picker.delegate = self; 
    self.imagePicker = [[GKImagePicker alloc] init]; 
    self.imagePicker.cropSize = CGSizeMake(320, 90); 
    self.imagePicker.delegate = self; 
    self.imagePicker.imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera; 
    picker.sourceType = UIImagePickerControllerSourceTypeCamera; 
    [self presentModalViewController:self.imagePicker.imagePickerController animated:YES]; 

} 

Answer 1

這裏工作的：

UIImage *image = [UIImage imageNamed:@"myImage"]; 
NSData *data = UIImageJPEGRepresentation(image, 1.0); 

//reduce size of image (scale down) 
UIImage *image2 = [UIImage imageWithData:data scale:2.0]; 
//increase size of image (scale up) 
UIImage *image3 = [UIImage imageWithData:data scale:0.5]; 

指定自己CGFloat價值尺度作物。