#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//1.添加一个视图
UIView *greenView=[[UIView alloc]init];
greenView.frame=CGRectMake(100, 100, 100, 100);
greenView.backgroundColor=[UIColor greenColor];
[self.view addSubview:greenView];
//设置第一响应事件(必须做的)
[self becomeFirstResponder];
}
-(void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
if (motion==UIEventSubtypeMotionShake) {
//截屏
[self snapshot];
}
}
//截屏
-(void)snapshot
{
//开启上下文
UIGraphicsBeginImageContext(self.view.bounds.size);
//拿到上下文
CGContextRef context=UIGraphicsGetCurrentContext();
[self.view.layer renderInContext:context];
UIImage *image=UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
//保存到相册
UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
}
- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo
{
if (!error) {
NSLog(@"save success");
}
}
@end