屏幕截图

new_gist_file

//
//  ViewController.m
//  图片截屏
//

#import "ViewController.h"

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIImageView *picView;


@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    [self getScreenShot];
    
}

- (void)getScreenShot {
    
    UIGraphicsBeginImageContextWithOptions(self.view.frame.size, NO, 0);
    
    CGContextRef ctx = UIGraphicsGetCurrentContext();
    
    [self.view.layer renderInContext:ctx];
    
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    
    UIGraphicsEndImageContext();
    
    //保存到相册
    UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
    
}

#pragma mark - 只能使用该方法
- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void*)contextInfo {
    NSLog(@"save ok");
}

@end