Example to Make PDF in React Native from HTML Text

Here is an Example to Make PDF in React Native from HTML Text. In this example, we will create a PDF file from the HTML text after the click of a button in our App. To complete this task we will use react-native-html-to-pdf library. So let’s get started.

To Make a React Native App

Getting started with React Native will help you to know more about the way you can make a React Native project. We are going to use react-native init to make our React Native App.

Assuming that you have node installed, you can use npm to install the react-native-cli command line utility.
Open the terminal and go to the workspace and run Run the following commands to create a new React Native project This will make a project structure with an index file named App.js in your project directory.

Installation of Dependency

To use RNHTMLtoPDF we need to install react-native-html-to-pdf package. To install this

Open the terminal and jump into your project

Run the following command

This command will copy all the dependencies into your node_module directory, You can find the directory in node_module the directory named react-native-html-to-pdf.

Linking of Library

To use react-native-html-to-pdf library we have to link some dependencies in Android and IOS project files. In order to link the library you have to run following command:

You can see the following changes in your android project. If you are unable to find the changes then please do those changes as they are must for this example.

Go to the HtmltoPDFExample> android > app > build.gradle.
Scroll down and you can see the following dependency and if not please add this.

Open HtmltoPDFExample> android > settings.gradle and you can see the following lines and if not please add this.

 

Open HtmltoPDFExample> android > app > src > main > java > com > htmltopdfexample> MainApplication.java  and you can see the following lines in imports if not then please add

Scroll down and you can see the following line in getPackages after new MainReactPackage() if not then please add a comma(,) and add

 

Permission to access external storage for Android and other configurations

We are accessing external storage so we need to add some permission in AndroidManifest.xml file.  On devices before SDK version 23, the permissions are automatically granted if they appear in the manifest but after SDK version 23 android applies new permissions model. For more about the permission, you can see this post.

So we are going to add the following permissions in the AndroidMnifest.xml

  • WRITE_EXTERNAL_STORAGE: To store the PDF in SD card.
  • READ_EXTERNAL_STORAGE: To read the SD card.

By adding permission in AndroidManifest.xml you are able to work with the EXTERNAL_STORAGE in devices which are lower than API 23. But if you want to access the EXTERNAL_STORAGE in higher level devices you also need to ask for the runtime permission.

For this example Please do check your compileSdkVersion and targetSdkVersion is above or equal 23. Go to the HtmltoPdfExample> android > app > build.gradle.

For the example, I am using the following configuration.

Here we have done with our installation of the library. If you are still facing the trouble please comment below so that we can help you out from the problem. Just to confirm the dependencies here is the screenshot of the dependencies that we are using

If you are on the same boat then let’s go further or please update your package.json and run npm install to install new dependencies.

You can download the source code from Github

OR

Open App.js in any code editor and replace the code with the following code

App.js

To Run the React Native App

Open the terminal again and jump into your project using. To run the project on an Android Virtual Device or on real debugging device or on the iOS Simulator by running
Here are the Screenshots of the application.

Asking for permission while opening the app for the first time.

Click on create PDF to create PDF

Have a look at the location in internal/external storage where we have created PDF from HTML

     

This is how you can make PDF from your React Native Application. If you have any doubt or you want to share something about the topic you can comment below or contact us here. There will be more posts coming soon. Stay tuned!

Hope you liked it. 🙂

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About Snehal Agrawal

#SelfLearner #MobileAppDeveloper #TechnologyMiner #OpenSourceLover thats enough to describe me..

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9 Comments on “Example to Make PDF in React Native from HTML Text”

    1. As we can not use bootstrap or any other way to auto adjust the text width. So you have to define the width of the text manually in HTML. First you have to find the width of the page in px like for “A4″ page the size is 595px 842px so we have to define the width of the external div to width=”595px” which will restrict the width and text will automatically goes to the next line. If you are still facing the issue then can you share your content so that I can try once.

  1. hello.
    i am using expo and it brings a warning saying ” Possible unhandled Promise Rejection (id: 16):
    TypeError: undefined is not an oblective (evaluating’ _reactNativeHtmlToPdf.default.convert’) ”
    and then it doesn’t print

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