Objective c pdf nsdata to uiimage

The motivation for this was to enable the easy use of scaleable vector assets in ios apps. Encoding convert the image to nsdata first let imagedata. So, in this tutorial ive talked about saving an array of uiimage objects as nsdata, and retrieve them by. A new image object for the specified data, or nil if the method could not initialize the image from the specified data. Below example explains how to convert nsdata to nsstring with objectivec using nsstring initwithdata function we can convert nsdata to nsstring. Provide me any good code example of converting nsdata to nsstring.

Fill out the form below and instructions to reset your password will be emailed to you. Swift core data cast nsdata to uiimage 3638 views 2 replies. I drag and drop the uiimageview in the uitableviewcell and set the height and width visually i am using storyboards. Hi readers,this blog includes the concept of converting nsdata to uiimage with the help of a very simple example.

Finally, we extract the image data from the stream object, which we in turn convert into a uiimage object. What is a way to convert uiimage to a byte array in swift. A data object containing the jpeg data, or nil if there was a problem generating the data. This can be useful if youd like to save it in core data. Nsstring nsdata nsstring nsstring astring nsstring alloc initwithdata. In this post ill do the opposite, putting the conversion into the context how to print an nsdata object to the debugging console by default, when you print an nsdata object to the console using nslog, the output will be in hex, it will look something like the following. You can add an image to a views layer simply by using its contents property myview. The method you are using nsdata imagedata nsdata datawithcontentsofurl. Nsmutablearray assuming data is a valid nsdata object objectivec nsmutablearray array nsmutablearray data bytes. Objective c nsdata data uiimagepngrepresentationself. Im trying to send a pdf using a uiactivityviewcontroller. We also need a url to download from, and the location of the users documents directory. Browse other questions tagged objectivec ios ipad cocoatouch nsdata or ask your own question.

A new image object for the specified data, or nil if the method. Browse other questions tagged objective c ios ipad cocoatouch nsdata or ask your own question. Objectivec what is the way to properly set the height. For images in asset catalogs, specify the name of the image asset. This function returns nil if the encoding is not correct syntax of initwithdata idinitwithdata. I have a uiimageview and the objective is to scale it down proportionally by giving it either a height or width. May return nil if image has no cgimageref or invalid bitmap format public func uiimagepngrepresentationimage. To download the file and turn it into nsdata we need an nsurlrequest. Objectivec nsstring nsdata byte objectivec nsstring nsdata byte iphone ios gf771115. This site uses cookies for analytics, personalized content and ads. Image objects are immutable, so you always create them from existing image data, such as an image file on disk or programmatically created image data.

Pdf which is the name that i give the file i dont mind too much the change in title, but the lack of a. Convert nsattributedstring to uiimage ios tutorial. It can actually be done using a single line code, codeguard let image uiimagenamed. The most intuitive way these days seems to be as bitmap data, but that. Extracting images from a pdf in swift inside pspdfkit. Instead, we can use nsdata to retrieve the data and use its method writetofile to writetourl. How to convert a uiimage into nsdata ios dev diary. Saving an array of uiimage objects objective c youtube. Swift core data cast nsdata to uiimage apple developer forums. You can store a uiimage or an nsimage on mac as raw data. Passing data between view controllers with messageboxconcept pdf creation in ios. The motivation for this was to enable the easy use of scaleable vector assets in ios apps usage. So far everything works fine using a fairly basic approach but the one issue i have is that when i select the send by mail option, the pdf s file name is attachment1 rather than calculation. Does anyone know how to convert a uiimage to a base64 string.

This function may return nil if the image has no data or if the underlying cgimage ref contains data in an unsupported bitmap format. Convert a uiimage to pdf in swift better programming medium. November 17, 20 ios development core data, nsvaluetransformer, uiimage jay versluis. The uiimage class automatically handles the transform necessary to present an image in the correct display orientation according to its orientation metadata, so an image objects image orientation property simply indicates which transform was applied.

The app will fetch some pictures using the uiimagepickercontroller, it will then save those images, precisely,in a folder inside the document directory the imagesdirectorypath variable will handle a reference to the images folder inside the document directory the images and titles arrays are just where will all images be saved along with their corresponding names. Ive spent hours figuring out which way to store the data. Uicollectionview scroll freeze with nsdata imageview ios,uicollectionview,nsdata,uicollectionviewcell,sdwebimage. Uint8 assuming data is a valid nsdata object objectivec. This can be data from a file or data you create programmatically. Sign in sign up instantly share code, notes, and snippets.

You will need to remember the url where you saved the image pdf that you are storing in order to get it back, you can use the nsdata class to get the contents of the file at that url datawithcontentsofurl. Generating pdf documents programmatically in ios sentia blog. My problem comes from when i try to save an image to disk converting it to nsdata, then retrieving it. This function may return nil if the image has no data or if the underlying cgimage. For png images, you may omit the filename extension. Use the following line to import the necessary methods. Swift create image instance with image name from bundle var image. It treats in this tutorial, we will learn how to convert images and pdf to base64 string in swift. This function may return nil if the image has no data or if the underlying. If bordersize is nonzero, a transparent border of the given size will also be added. The goal of this article is to convert uiimages to a pdf using swift. Nsdictionary pdf nsdata nsdata nsdata stringdouble. Im trying to save a uiimage and then retrieve it and display it. A data object containing the png data, or nil if there was a problem generating the data.