There are many apps in which data from the app is provided to users in the downloadable PDF file format. So in this case we have to create a PDF file from the data present inside our app and represent that data properly inside our app. So by using this technique, we can easily create a new PDF according to our requirements. In this article, we will take a look at creating a new PDF file from the data present inside your Android app and saving that PDF file in the external storage of the users’ device. So for generating a new PDF file from the data present inside our Android app we will be using Canvas. Canvas is a predefined class in Android which is used to make 2D drawings of the different objects on our screen. So in this article, we will be using canvas to draw our data inside our canvas, and then we will store that canvas in the form of a PDF. Now we will move towards the implementation of our project.
Below is the sample GIF in which we will get to know what we are going to build in this article. Note that this application is built using Java language. In this project, we are going to display a simple button. After clicking the button our PDF file will be generated and we can see this PDF file saved in our files.
To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio . Note that select Java as the programming language.
Go to the activity_main.xml file and refer to the following code. Below is the code for the activity_main.xml file.
Navigate to the app > AndroifManifest.xml file and add the below permissions to it.
Add a Image file(.png file) into Drawable folder named it as gfglogo .
gfglogo.png
Go to the MainActivity.java file and refer to the following code. Below is the code for the MainActivity.java file. Comments are added inside the code to understand the code in more detail.