Android file operation details and simple examples

Android file operation details

Android file operation is simply the processing of java file operation. Therefore, if you are familiar with Java IO file operation, Android file operation is a piece of cake. Well, I won't say much. Let's get to the point today.

Let's start with a small project

The first is a layout file, which is relatively simple. Let's go directly to the code.

Then there is the java file of our main interface. Continue with the previous code

Do you think the code inside is a little strange? What the hell is fileservice?

In fact, fileservice is our business class. Its main function is to help us save and read files. The code is also posted below

Business class analysis

Now let's get to the point. The core of this small project lies in this business class. The reasons are as follows:

core

Layered idea, different functional classes are placed in different packages, which is not only convenient for program debugging, but also convenient for future code maintenance.

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