屏幕截图

Main.storyboard

ViewController.m

// ViewController.m

// 6A03.屏幕截图

// Created by huan on 16/1/30.

#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