第一种方法（截全屏幕）
下面这段代码可以将当前屏幕显示的内容截图放置相册中，需要导入
-(void)viewDidAppear:(BOOL)animated
{
[superviewDidAppear:animated];
self.view.backgroundColor= [UIColorgreenColor];
UIWindow*screenWindow = [[UIApplicationsharedApplication]keyWindow];
UIGraphicsBeginImageContext(screenWindow.frame.size);
[screenWindow.layerrenderInContext:UIGraphicsGetCurrentContext()];
UIImage* viewImage =UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImageWriteToSavedPhotosAlbum(viewImage,nil,nil,nil);
}
第二种方法（自定义截图区域）
#pragmamark -=====自定义截屏位置大小的逻辑代码=====-
staticintScreenshotIndex=0; //
-(void)ScreenShot{
//这里因为我需要全屏接图所以直接改了，宏定义iPadWithd为1024，iPadHeight为768，
//UIGraphicsBeginImageContextWithOptions(CGSizeMake(640, 960), YES, 0);//设置截屏大小
UIGraphicsBeginImageContextWithOptions(CGSizeMake(iPadWidth, iPadHeight), YES,0);//设置截屏大小
[[self.view layer] renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage =UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
CGImageRef imageRef =viewImage.CGImage;
//CGRect rect = CGRectMake(166, 211, 426, 320);//这里可以设置想要截图的区域
CGRect rect = CGRectMake(0,0, iPadWidth, iPadHeight);//这里可以设置想要截图的区域
CGImageRef imageRefRect =CGImageCreateWithImageInRect(imageRef, rect);
UIImage *sendImage =[[UIImage alloc] initWithCGImage:imageRefRect];
UIImageWriteToSavedPhotosAlbum(sendImage, nil, nil, nil);//保存图片到照片库
NSData *imageViewData =UIImagePNGRepresentation(sendImage);
NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *pictureName= [NSString stringWithFormat:@"screenShow_%d.png",ScreenshotIndex];
NSString *savedImagePath =[documentsDirectory stringByAppendingPathComponent:pictureName];
NSLog(@"截屏路径打印: %@", savedImagePath);
//这里我将路径设置为一个全局String，这里做的不好，我自己是为了用而已，希望大家别这么写
[self SetPickPath:savedImagePath];
[imageViewData writeToFile:savedImagePath atomically:YES];//保存照片到沙盒目录
CGImageRelease(imageRefRect);
ScreenshotIndex++;
}
//设置路径
- (void)SetPickPath:(NSString *)PickImage {
_ScreenshotsPickPath =PickImage;
}
//获取路径<这里我就直接用于邮件推送的代码中去了，能达到效果，但肯定有更好的写法>
- (NSString *)GetPickPath {
return_ScreenshotsPickPath;
}
