ios 应用内截屏

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 = [[UIApplication sharedApplication]keyWindow];

UIGraphicsBeginImageContext(screenWindow.frame.size);

[screenWindow.layer renderInContext: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;

}