ios - 空气打印 View

Question

我正在使用 xcode 5。我想知道如何打印当前 View 。因此，一个简单的按钮，上面写着“打印”，然后当用户点击它时，它会在屏幕上打印所有内容。我将如何实现？

Answer 1

截取 View

并在路径中另存为png并将数据传递给UIPrintInteractionController

截图

UIGraphicsBeginImageContextWithOptions(self.view.frame.size, NO, 0.0);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

CGRect rect=self.view.frame;


CGImageRef cropped1 = CGImageCreateWithImageInRect(viewImage.CGImage, rect);
UIImage *imges =  [UIImage imageWithCGImage:cropped1]; 
CGImageRelease(cropped1);
// squarecropimg.image=imges;

NSData *date=UIImagePNGRepresentation(imges);
NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *doc=[paths objectAtIndex:0];
NSString *appstr=[doc stringByAppendingPathComponent:@“currentview.png"];

[日期 writeToFile:appstr 原子地:YES];

将CURRENTVIEW.PNG的数据传给打印机