屏幕截图

Main.storyboard

ViewController.m

//

//  ViewController.m

//  6A03.屏幕截图

//

//  Created by huan on 16/1/30.

//  Copyright © 2016年 huanxi. All rights reserved.

//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

}

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{

    // 截取当前view 成为一张图片

    //使用位图上下文

    //1. 开启位图上下文

    UIGraphicsBeginImageContext(self.view.bounds.size);

    //2. 当前控制器的view画在位图上下文 render 渲染

    [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];

    //3.获得图片

    UIImage *captureImg = UIGraphicsGetImageFromCurrentImageContext();

    //4.结束位图编辑

    UIGraphicsEndImageContext();

    //save Image

    NSData *imgData = UIImagePNGRepresentation(captureImg);

#warning 平时开发过程中，图片保存是沙盒

    [imgData writeToFile:@"/Users/huan/Desktop/capture.png" atomically:YES];

}

@end

屏幕截图

原文：http://www.cnblogs.com/Lu2015-10-03/p/5177801.html