Unit - 5 Working with Files and Directories

Lesson Plan: Unit - 05
Subject: P15A2AAD - Android Application Development
Topic of Study: Working with Files and Directories
Grade/Level: Master of Computer Applications
Objective: To understand the mechanism of Files and Directories
Time Allotment: 55 Minutes

• Working with Files and Directories
• Android application files are stored in a standard directory hierarchy on the Android file system.
• File operators all begin by interacting with the application Context object.
• You can browse an application’s directory structure using the DDMS File Explorer.
• Android application data is stored on the Android file system in the following top-level directory:
• Exa.      /data/data/
• Important Methods:
• Exa.
  
• Creating and Writing to Files to the Default Application Directory:
• openFileOutput() method to create files in the default location under the application data directory: /data/data//files/
• For example.
• The following code snippet creates and opens a file called Filename.txt.
• We write a single line of text to the file and then close the file.
• Exa.
  
• Write a File:
• Exa.
  
• Append in File:
• Exa.
  
• Reading from Files in the Default Application Directory:
• Exa.