Hi all…..
In this post I will show you how to read a text file in ANDOID.
Let your file is in the your application sandbox of your ANDOID project, i.e the file’s location is /data/data/your_package_name folder.
To view this folder -> open File Explorer and expand each folder.
For this example to work first push te file into this folder, because I am not creating it now.
The file is named “myfile.txt”
This example reads the file line by line using readLine() function till the end of the file. Here your need two classes named “InputStreamReader” and “BufferedReader”. For writing into the file you need “OutputStreamReader” class. The result is displayed in a Toast. Make sure you notice it.
The following is the code for reading the text file………
String res = null; try { InputStream in = openFileInput("myfile.txt"); if (in != null) { // prepare the file for reading InputStreamReader input = new InputStreamReader(in); BufferedReader buffreader = new BufferedReader(input); res = ""; while (( line = buffreader.readLine()) != null) { res += line; } in.close(); Toast.makeText(getApplicationContext(),"File Contents ==> " + res,Toast.LENGTH_SHORT).show(); }else{ } } catch(Exception e){ Toast.makeText(getApplicationContext(), e.toString() + e.getMessage(),Toast.LENGTH_SHORT).show(); }
Want More then
Follow this link
How to read and write files to SDCARD and application SandBox in Android – A complete example?
Please leave your comments on this post.
Hi,
If the file is in assets folder it must be read with:
// InputStream in = openFileInput(“myfile.txt”);
InputStream in = getAssets().open(“myfile.txt”);
openFileInput is for file in
/data/data/com.some_dev.some_app/files
folder (can be seen on rooted devices).
Best Regards
Hey,
this code doesnt really work. because I only get null printed on my screen.
Even Veselin’s info wasnt good enough to make it work… See any bug in the code?
Hey Karthik :- check your File explorer if the file has been created or not. This code is perfectly working.
what should be the location of myfile.txt
The file is created inside the application sandbox.