Add watermarks to your photos on iOS

In the project we need to mark the photos taken to prevent the image from being stolen, so this need to add a watermark on the photo, to indicate that the photo is unique.

Watermark is not to add a few labels on the top, but we have to take pictures to the picture as a whole.

Provide a method this method only needs to pass a watermark image and watermark content to achieve the effect

1-(UIImage *) Watermarkimage: (UIImage *) img withname: (NSString *) name2 3 {4 5nsstring* Mark =name;6 7     intW =Img.size.width;8 9     inth =Img.size.height;Ten  One Uigraphicsbeginimagecontext (img.size); A  -[img Drawinrect:cgrectmake (0,0, W, h)]; -  theNsdictionary *attr = @{ -  -Nsfontattributename: [Uifont boldsystemfontofsize: -],//Set Font -  +Nsforegroundcolorattributename: [Uicolor Redcolor]//Set Font Color -  +                            }; A  at[Mark Drawinrect:cgrectmake (0,Ten, the, +) withattributes:attr]; //upper left corner  -  -[Mark Drawinrect:cgrectmake (W- the,Ten, the, +) withattributes:attr]; //upper right corner  -  -[Mark Drawinrect:cgrectmake (W- the, H- +-Ten, the, +) withattributes:attr]; //Lower right corner  -  in[Mark Drawinrect:cgrectmake (0, H- +-Ten, the, +) withattributes:attr]; //lower left corner  -  toUIImage *aimg =Uigraphicsgetimagefromcurrentimagecontext (); +  - Uigraphicsendimagecontext (); the  *     returnaimg; $ Panax Notoginseng}

Add watermarks to your photos on iOS