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Editor to share with you how to achieve IOS mobile phone screenshot, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Main steps of screenshot of IOS mobile phone

1. Create a drawing context

two。 Draw the screen into it

3. Save the picture to the album

4. Turn off the drawing context

The realization of screenshot of IOS mobile phone

-(IBAction) truncation: (UIButton *) sender {

/ / take a screenshot after a delay of 2 seconds

Dispatch_after (dispatch_time (DISPATCH_TIME_NOW, (int64_t) (2.0 * NSEC_PER_SEC)), dispatch_get_main_queue (), ^ {

# pragma mark create Screenshot

/ / 1. Create a graphic context, which is equivalent to a canvas

UIGraphicsBeginImageContext (self.view.frame.size)

/ / 2. Draw the screen into it

[self.view.layerrenderInContext:UIGraphicsGetCurrentContext ()]

UIImage * newImage = UIGraphicsGetImageFromCurrentImageContext ()

/ / 3. Save the picture to the album

UIImageWriteToSavedPhotosAlbum (newImage, self,@selector (p_w_picpath:didFinishSavingWithError:contextInfo:), nil)

/ / 4. Turn off the drawing context

UIGraphicsEndImageContext ()

});

}

# pragma mark determines whether the screenshot is created successfully-it can be implemented using a third-party library

-(void) p_w_picpath: (UIImage *) p_w_picpath didFinishSavingWithError: (NSError *) error contextInfo: (void *) contextInfo {

If (error) {

/ / NSLog (@ "Save failed")

[MBProgressHUD showError:@ "failed to save, please check whether the application has permission to access the album"]

} else {

/ / NSLog (@ "saved successfully")

[MBProgressHUD showSuccess:@ "saved successfully"]

}

}

The above is all the contents of the article "how to take screenshots on IOS". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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