IOS screenshot Single example code

one. The full screen code for IOS is:
  

    UIWindow *screenwindow = [[UIApplication sharedapplication] Keywindow];    1. Screenshot    Uigraphicsbeginimagecontext (screenWindow.frame.size);    [Screenwindow.layer Renderincontext:uigraphicsgetcurrentcontext ()];    UIImage *screenshot = Uigraphicsgetimagefromcurrentimagecontext ();    Uigraphicsendimagecontext ();

two. Intercept the specified area:
uigraphicsbeginimagecontextwithoptions( Self. View.bounds.size, Self. View.opaque,0.0);
[ Self. Myview.layer Renderincontext:Uigraphicsgetcurrentcontext()];
UIImage*theimage=Uigraphicsgetimagefromcurrentimagecontext();
Uigraphicsendimagecontext();

NSData*theimagedata=uiimagejpegrepresentation(Theimage,1.0 );//you can use PNG too
[Theimagedata writetofile:@"Example.jpeg"Atomically:yes];


three. Single example of screenshot code
ScreenShot.h File

#import <Foundation/Foundation.h> @interface screenshot:nsobject///screenshot picture location @property (nonatomic,copy) NSString *filepath;/* Single-instance function */+ (ID) sharedscreenshot;/* screenshot, and write memory */-(void) getscreenimage; @end

screenshot.m File

#import "ScreenShot.h"//Screenshot Picture # Screenshotimage @ "Screenshot.png" @implementation screenshot@synthesize filepath=_filepath;-(ID) init {if (self = [super init]) {_filepath=[self Documentspathforfilename:screenshotim    Age]; } return self;}    #pragma mark-Single case + (ID) sharedscreenshot {static screenshot *screenshot = nil;    Static dispatch_once_t Oncetoken;    Dispatch_once (&oncetoken, ^{screenshot = [[Self alloc] init];    }); return screenshot;} #pragma mark gets the path by file name-(NSString *) Documentspathforfilename: (NSString *) name{nsarray *paths = Nssearchpathfordirector    Iesindomains (Nsdocumentdirectory,nsuserdomainmask, YES);        NSString *documentspath = [Paths objectatindex:0]; return [Documentspath stringbyappendingpathcomponent:name];}    #pragma mark-screenshot-(void) getscreenimage{UIWindow *screenwindow = [[UIApplication sharedapplication] Keywindow];    1. Screenshot Uigraphicsbeginimagecontext (screenWindow.frame.size); [Screenwindow.layer RenderincontexT:uigraphicsgetcurrentcontext ()];    UIImage *screenshot = Uigraphicsgetimagefromcurrentimagecontext ();    Uigraphicsendimagecontext ();        2. Save NSData *screenshotpng = uiimagepngrepresentation (screenshot);    Nserror *error = nil; 3. Write memory [screenshotpng writetofile:_filepath options:nsatomicwrite error:&error];} @end

four. Use: 
1. Introduce the header file in the Viewcontroller ScreenShot.h

    //screenshot and save   [screenshot sharedscreenshot] getscreenimage];

2. Get Pictures

    NSString *shotfilepath= ((screenshot *) [screenshot sharedscreenshot]). FilePath;    NSData *shotimagedata = [NSData Datawithcontentsoffile:shotfilepath];    UIImage *shotimage = [UIImage imagewithdata:shotimagedata];