ios截屏代码[转]

http://www.cnblogs.com/chenxiangxi/p/3547974.html

这位博主的连接中将ios自定义大小位置的截屏代码写的很不错，马上就能用的方法，对于只想马上用的程序员很有帮助

http://www.2cto.com/kf/201310/250228.html

我将其改为以下代码：

 1 #pragma mark -=====自定义截屏位置大小的逻辑代码=====-
 2 static int ScreenshotIndex=0; //这里的逻辑直接采用上面博主的逻辑了
 3 -(void)ScreenShot{
 4     //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，
 5 //    UIGraphicsBeginImageContextWithOptions(CGSizeMake(640, 960), YES, 0);     //设置截屏大小
 6     UIGraphicsBeginImageContextWithOptions(CGSizeMake(iPadWidth, iPadHeight), YES, 0);     //设置截屏大小
 7     [[self.view layer] renderInContext:UIGraphicsGetCurrentContext()];
 8     UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
 9     UIGraphicsEndImageContext();
10     CGImageRef imageRef = viewImage.CGImage;
11 //    CGRect rect = CGRectMake(166, 211, 426, 320);//这里可以设置想要截图的区域
12     CGRect rect = CGRectMake(0, 0, iPadWidth, iPadHeight);//这里可以设置想要截图的区域
13     CGImageRef imageRefRect =CGImageCreateWithImageInRect(imageRef, rect);
14     UIImage *sendImage = [[UIImage alloc] initWithCGImage:imageRefRect];
15     UIImageWriteToSavedPhotosAlbum(sendImage, nil, nil, nil);//保存图片到照片库
16     NSData *imageViewData = UIImagePNGRepresentation(sendImage);
17     
18     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
19     NSString *documentsDirectory = [paths objectAtIndex:0];
20     NSString *pictureName= [NSString stringWithFormat:@"screenShow_%d.png",ScreenshotIndex];
21     NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:pictureName];
22     NSLog(@"截屏路径打印: %@", savedImagePath);
23     //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
24     [self SetPickPath:savedImagePath];
25 
26     [imageViewData writeToFile:savedImagePath atomically:YES];//保存照片到沙盒目录
27     CGImageRelease(imageRefRect);
28     ScreenshotIndex++;
29 }
30 //设置路径
31 - (void)SetPickPath:(NSString *)PickImage {
32     _ScreenshotsPickPath = PickImage;
33 }
34 //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>
35 - (NSString *)GetPickPath {
36     return _ScreenshotsPickPath;
37 }