Screenshot of IOS image capture screen

Capturing images in iOS

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You need to specify an object to capture the picture. The code is not much, I'm not very good at it.

1 /**2 * Large graph cut Small map3  *4 * @param bigimg Large Map5  *6 * @return Small picture7  */8-(UIImage *) Getimagefromimage:(uiimage*) bigimg{9     Ten     //Big picture Bigimage One     //defines the region relative position of the Myimagerect ACGRect Myimagerect = CGRectMake (10.0,10.0,57.0,57.0);//This cgrectmake decides the position . -      -uiimage* bigimage=bigimg; theCgimageref Imageref =Bigimage.cgimage; -Cgimageref Subimageref =Cgimagecreatewithimageinrect (Imageref, myimagerect); -      - cgsize size; +Size.width =57.0;//These two quantities need to be set to the size of the new picture -Size.Height =57.0;// +     //Methods of interception A uigraphicsbeginimagecontext (size);  atCgcontextref context =Uigraphicsgetcurrentcontext (); - cgcontextdrawimage (context, myimagerect, subimageref); -uiimage* Smallimage =[UIImage imagewithcgimage:subimageref]; - Uigraphicsendimagecontext (); -      -     returnSmallimage; in}

There are many iosdev that may also require the following two paragraphs of code the first paragraph is the screenshot:

1 #pragmaMark-Take the screen2 /*Gets the current*/3-(UIImage *) Imagefromview: (UIView *) TheView atframe: (cgrect) Rect4 {5Uigraphicsbeginimagecontextwithoptions (Theview.frame.size,yes,1.0);6Cgcontextref context =Uigraphicsgetcurrentcontext ();7 cgcontextsavegstate (context);8 Uirectclip (rect);9 [Theview.layer Renderincontext:context];TenUIImage *theimage =Uigraphicsgetimagefromcurrentimagecontext (); One Uigraphicsendimagecontext (); A     returntheimage; -}

About Uigraphicsbeginimagecontextwithoptions (theview.frame.size,yes,1.0); Need special instructions

The first parameter is the size of the captured page;

The second is whether it is opaque (see carefully oh, opaque) write yes;

The third is the quality of the picture: General write maximum (picture effect is best), that is, 1.0

The second paragraph is the code that changes the square angle to a circle (typically used to display the avatar)

1 /**2 * Picture changed to rounded corner3  *4 * @param image artwork5 * @param the size of the inset fillet6  *7 * @return cut a good figure8  */9-(uiimage*) Circleimage: (uiimage*) Image withparam: (cgfloat) inset {Ten Uigraphicsbeginimagecontext (image.size); OneCgcontextref context =Uigraphicsgetcurrentcontext (); ACgcontextsetlinewidth (Context,2); - Cgcontextsetstrokecolorwithcolor (context, [Uicolor Redcolor]. Cgcolor); -CGRect rect = CGRectMake (inset, inset, Image.size.width-inset *2.0f, Image.size.height-inset *2.0f); the cgcontextaddellipseinrect (context, rect); - Cgcontextclip (context); -      - [Image Drawinrect:rect]; + cgcontextaddellipseinrect (context, rect); - Cgcontextstrokepath (context); +UIImage *newimg =Uigraphicsgetimagefromcurrentimagecontext (); A Uigraphicsendimagecontext (); at     returnnewimg; -}

If there's anything wrong, I want you to point out that Exchange study

Screenshot of IOS image capture screen