Ios generates an image from the view to maintain the definition.

Ios generates an image from the view to maintain the definition.

# Pragma mark generate an image

-(UIImage *) makeImageWithView :( UIView *) view

{

CGSize s = view. bounds. size;

// In the following method, the first parameter indicates the region size. The second parameter indicates whether it is non-transparent. If you want to display the translucent effect, you need to pass NO; otherwise, pass YES. The third parameter is the screen density, and the key is the third parameter.

Uigraphicsbeginimagecontextwitexceptions (s, NO, [UIScreenmainScreen]. scale );

[View. layer renderInContext: UIGraphicsGetCurrentContext ()];

UIImage * image = UIGraphicsGetImageFromCurrentImageContext ();

UIGraphicsEndImageContext ();

Return image;

}