How to read file from res raw by name

Question

I want to open a file from the folder res raw    I am absolutely sure that the file exists  To open the file I have tried  File ddd   new File  res raw example png      The command   ddd exists       yields FALSE  So this method does not work   Trying  MyContext getAssets   open  example png      ends up in an exception with getMessage    null    Simply using   R raw example   is not possible because the filename is only known during runtime as a string   Why is it so difficult to access a file in the folder  res raw

User · Answer

Here are two approaches you can read raw resources using Kotlin.

You can get it by getting the resource id. Or, you can use string identifier in which you can programmatically change the filename with incrementation.

Cheers mate

// R.raw.data_post

this.context.resources.openRawResource(R.raw.data_post)
this.context.resources.getIdentifier("data_post", "raw", this.context.packageName)

User · Answer

Here is example of taking XML file from raw folder    InputStream XmlFileInputStream   getResources   openRawResource R raw taskslists5items      getting XML   Then you can    String sxml   readTextFile XmlFileInputStream     when    public String readTextFile InputStream inputStream            ByteArrayOutputStream outputStream   new ByteArrayOutputStream             byte buf     new byte 1024           int len          try               while   len   inputStream read buf      -1                    outputStream write buf  0  len                             outputStream close                inputStream close              catch  IOException e                       return outputStream toString

User · Answer

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

User · Answer

You can read files in raw res using getResources   openRawResource R raw myfilename    BUT there is an IDE limitation that the file name you use can only contain lower case alphanumeric characters and dot  So file names like XYZ txt or my data bin will not be listed in R

[android] How to read file from res/raw by name

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