Android Read Text Raw Resource File

Android read text raw resource file

What if you use a character-based BufferedReader instead of byte-based InputStream?

BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line = reader.readLine();
while (line != null) { 
    ...
    line = reader.readLine();
}

Don't forget that readLine() skips the new-lines!

Reading from a raw resource text file

Think you are looking for something along the lines of

InputStream is = ctx.getResources().openRawResource(res_id);

Where ctx is a instance of Context

How to read file from res/raw by name

With the help of the given links I was able to solve the problem myself. The correct way is to get the resource ID with

getResources().getIdentifier("FILENAME_WITHOUT_EXTENSION",
                             "raw", getPackageName());

To get it as a InputStream

InputStream ins = getResources().openRawResource(
            getResources().getIdentifier("FILENAME_WITHOUT_EXTENSION",
            "raw", getPackageName()));

Reading JSON or text file in resource folder

If you want to read a file from res/raw folder you can obtain InputStream by R.raw.yourfile id like this:

resources.openRawResource(R.raw.yourfile)

Or you can open file by Uri:

val uri = Uri.parse("android.resource://com.example.your_package/raw/yourfile")
val file = File(uri.getPath());

Alternatevily you can put your files in assets/ folder and get InputStream like this:

assets.open("yourfile.txt")

Write in a txt file located in /raw folder

I have a txt file in the /raw folder and I want to write into it

That is not possible at runtime. Resources and assets are read-only at runtime.

But gives me error in openRawResource()... How do i solve this?

openRawResource() is for reading in the resource, and it gives you an InputStream. You are welcome to write your data to an ordinary file, such as on internal storage.

Is it possible to read a raw text file without Context reference in an Android library project

Check out my answer here to see how to read file from POJO.

Generally, the res folder should be automatically added into project build path by ADT plugin. suppose you have a test.txt stored under res/raw folder, to read it without android.content.Context:

String file = "raw/test.txt"; // res/raw/test.txt also work.
InputStream in = this.getClass().getClassLoader().getResourceAsStream(file);

I did this before with an old SDK version, it should work with latest SDK as well. Give it a try and see if this helps.

write text file in res/raw folder

Resources contained in your raw directory in your project will be packaged inside your APK and will not be writeable at runtime.

Look at Internal or External Data Storage APIs to read write files.

https://developer.android.com/training/basics/data-storage/files.html

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