iphone上的图像编辑

Question

在我的应用程序中，我需要从照片库中选择一个图像，然后用户应该能够裁剪或缩放图像。谁能帮帮我？

Answer 1

UIImagePickerController应该可以做到这一点。

UIImagePickerController *picker = [UIImagePickerController new];
picker.delegate = self;
picker.allowsEditing = YES;
[yourViewController presentModalViewController:picker];

然后我们需要实现委托方法：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];
}

Answer 2

您可以使用UIImagePickerController让用户从照片库中选择图像。

Answer 3

@denizen The [yourViewController presentModalViewController:picker];需要一个动画:BOOL。

喜欢：[yourViewController presentModalViewController:picker animated:YES];