> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/ios/get-started/viewdoc.md).

# View a document using PTDocumentController

Learn how to use the Legacy Viewer for PTDocumentViewController class in iOS development. Follow step-by-step instructions to integrate PDFNet and Tools libraries, override viewDidAppear() method, and

{% hint style="info" %}
**Legacy Viewer**

For the legacy `PTDocumentViewController` class, please see [this guide ](/ios/get-started/get-started/viewdoc-legacy.md).
{% endhint %}

1. Open your ViewController file. This is either the `ViewController.swift` or `ViewController.m` file in the left pane depending on your choice of language. Import PDFNet and Tools libraries.

{% tabs %}
{% tab title="Swift" %}
{% code lineNumbers="true" %}

```swift
import PDFNet
import Tools
```

{% endcode %}
{% endtab %}

{% tab title="Obj-C" %}
{% code lineNumbers="true" %}

```objc
#import <PDFNet/PDFNet.h>
#import <Tools/Tools.h>
```

{% endcode %}
{% endtab %}
{% endtabs %}

1. Override the `viewDidAppear()` method in the `ViewController` class and then open the DocumentViewController using:

{% tabs %}
{% tab title="Swift" %}
{% code lineNumbers="true" %}

```swift
override func viewDidAppear(_ animated: Bool) {
    // Create a PTDocumentController
    let documentController = PTDocumentController()
    // The PTDocumentController must be in a navigation controller before a document can be opened
    let navigationController = UINavigationController(rootViewController: documentController)
    navigationController.modalPresentationStyle = .fullScreen
    navigationController.navigationBar.isTranslucent = false
    navigationController.toolbar.isTranslucent = false
    // Open a file from URL.
    let fileURL: URL = URL(string:"https://pdftron.s3.amazonaws.com/downloads/pl/sample.pdf")!
    documentController.openDocument(with: fileURL)
    // Show navigation (and document) controller.
    self.present(navigationController, animated: true, completion: nil)
}
```

{% endcode %}
{% endtab %}

{% tab title="Obj-C" %}
{% code lineNumbers="true" %}

```objc
- (void)viewDidAppear:(BOOL)animated {
    // Create a PTDocumentController
    PTDocumentController *documentController = [[PTDocumentController alloc] init];
    // The PTDocumentController must be in a navigation controller before a document can be opened
    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:documentController];
    navigationController.modalPresentationStyle = UIModalPresentationFullScreen;
    navigationController.navigationBar.translucent = NO;
    navigationController.toolbar.translucent = NO;
    // Open a file from URL.
    NSURL *fileURL = [[NSURL alloc] initWithString:@"https://pdftron.s3.amazonaws.com/downloads/pl/sample.pdf"];
    [documentController openDocumentWithURL:fileURL];
    // Show navigation (and document) controller.
    [self presentViewController:navigationController animated:YES completion:nil];
}
```

{% endcode %}
{% endtab %}
{% endtabs %}

1. Click on the white play button on the top left of your window to launch the application in the Simulator.

Your app should look like this:

![](https://4149080208-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgY6xtY9ZQd9XMpvWlGM0%2Fuploads%2Fgit-blob-12d54f459f4b62ff2a22800a73e7cabe0da026f6%2F4a19165cb4fbe1a72c8e991d05d83e2afde1425b-761x1649.png?alt=media)

## Next step

<a href="/ios/get-started/customize.md" class="button primary">Customize</a>


---

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