Android read text raw resource file

Question

Things are simple but don t work as supposed to   I have a text file added as a raw resource  The text file contains text like           b  IF APPLICABLE LAW REQUIRES ANY WARRANTIES WITH RESPECT TO THE     SOFTWARE  ALL SUCH WARRANTIES ARE      LIMITED IN DURATION TO NINETY  90      DAYS FROM THE DATE OF  DELIVERY           c  NO ORAL OR WRITTEN INFORMATION OR   ADVICE GIVEN BY  VIRTUAL ORIENTEERING    ITS DEALERS  DISTRIBUTORS  AGENTS OR   EMPLOYEES SHALL CREATE A WARRANTY OR   IN ANY WAY INCREASE THE SCOPE OF ANY   WARRANTY PROVIDED HEREIN         d   USA only  SOME STATES DO NOT   ALLOW THE EXCLUSION OF IMPLIED   WARRANTIES  SO THE ABOVE EXCLUSION MAY   NOT  APPLY TO YOU  THIS WARRANTY GIVES   YOU SPECIFIC LEGAL  RIGHTS AND YOU MAY   ALSO HAVE OTHER LEGAL RIGHTS THAT    VARY FROM STATE TO STATE    On my screen I have a layout like this    lt LinearLayout  xmlns android  http   schemas android com apk res android                       android layout width  fill parent                        android layout height  wrap content                        android gravity  center                        android layout weight  1 0                       android layout below    id logoLayout                       android background   drawable list background  gt                 lt ScrollView android layout width  fill parent                          android layout height  fill parent  gt                        lt TextView  android id    id txtRawResource                                  android layout width  fill parent                                  android layout height  fill parent                                 android padding  3dip   gt               lt  ScrollView gt          lt  LinearLayout gt    The code to read the raw resource is   TextView txtRawResource   TextView findViewById R id txtRawResource    txtDisclaimer setText Utils readRawTextFile ctx  R raw rawtextsample    public static String readRawTextFile Context ctx  int resId        InputStream inputStream   ctx getResources   openRawResource resId        ByteArrayOutputStream byteArrayOutputStream   new ByteArrayOutputStream         int i      try           i   inputStream read            while  i    -1                        byteArrayOutputStream write i               i   inputStream read                      inputStream close          catch  IOException e            return null            return byteArrayOutputStream toString        The text get s showed but after each line I get a strange character    How can I remove that character   I think it s New Line   WORKING SOLUTION  public static String readRawTextFile Context ctx  int resId        InputStream inputStream   ctx getResources   openRawResource resId        InputStreamReader inputreader   new InputStreamReader inputStream       BufferedReader buffreader   new BufferedReader inputreader       String line      StringBuilder text   new StringBuilder         try           while    line   buffreader readLine       null                text append line               text append   n                    catch  IOException e            return null            return text toString

User · Accepted Answer

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!

User · Answer

1 First create a Directory folder and name it raw inside the res folder 2 create a  txt file inside the raw directory folder you created earlier and give it any name eg articles txt     3 copy and paste the text you want inside the  txt file you created articles txt  4 dont forget to include a textview in your main xml  MainActivity java   Override protected void onCreate Bundle savedInstanceState         super onCreate savedInstanceState       setContentView R layout activity gettingtoknowthe os        TextView helloTxt    TextView findViewById R id gettingtoknowos       helloTxt setText readTxt          ActionBar actionBar   getSupportActionBar        actionBar hide     to exclude the ActionBar    private String readTxt            getting the  txt file     InputStream inputStream   getResources   openRawResource R raw articles        ByteArrayOutputStream byteArrayOutputStream   new ByteArrayOutputStream         try           int i   inputStream read            while  i    -1                byteArrayOutputStream write i               i   inputStream read                      inputStream close           catch  IOException e            e printStackTrace              return byteArrayOutputStream toString        Hope it worked

User · Answer

Well with Kotlin u can do it just in one line of code   resources openRawResource R raw rawtextsample  bufferedReader   use   it readText       Or even declare extension function   fun Resources getRawTextFile  RawRes id  Int            openRawResource id  bufferedReader   use   it readText       And then just use it straightaway   val txtFile   resources getRawTextFile R raw rawtextsample

User · Answer

Rather do it this way      reads resources regardless of their size public byte   getResource int id  Context context  throws IOException       Resources resources   context getResources        InputStream is   resources openRawResource id        ByteArrayOutputStream bout   new ByteArrayOutputStream         byte   readBuffer   new byte 4   1024        try           int read          do               read   is read readBuffer  0  readBuffer length               if read    -1                    break                            bout write readBuffer  0  read             while true            return bout toByteArray           finally           is close                    reads a string resource public String getStringResource int id  Charset encoding  throws IOException       return new String getResource id  getContext     encoding             reads an UTF-8 string resource public String getStringResource int id  throws IOException       return new String getResource id  getContext     Charset forName  UTF-8         From an Activity  add  public byte   getResource int id  throws IOException           return getResource id  this       or from a test case  add  public byte   getResource int id  throws IOException           return getResource id  getContext         And watch your error handling - don t catch and ignore exceptions when your resources  must exist or something is  very   wrong

User · Answer

If you use IOUtils from apache  commons-io  it s even easier   InputStream is   getResources   openRawResource R raw yourNewTextFile   String s   IOUtils toString is   IOUtils closeQuietly is      don t forget to close your streams     Dependencies  http   mvnrepository com artifact commons-io commons-io  Maven    lt dependency gt       lt groupId gt commons-io lt  groupId gt       lt artifactId gt commons-io lt  artifactId gt       lt version gt 2 4 lt  version gt   lt  dependency gt      Gradle    commons-io commons-io 2 4

User · Answer

borislemke you can do this by similar way like   TextView  tv   findViewById R id idOfTextView   tv setText readNewTxt     private String readNewTxt    InputStream inputStream   getResources   openRawResource R raw yourNewTextFile    ByteArrayOutputStream byteArrayOutputStream   new ByteArrayOutputStream      int i   try    i   inputStream read    while  i    -1         byteArrayOutputStream write i      i   inputStream read             inputStream close        catch  IOException e          TODO Auto-generated catch block  e printStackTrace         return byteArrayOutputStream toString

User · Answer

Here goes mix of weekens s and Vovodroid s solutions   It is more correct than Vovodroid s solution and more complete than weekens s solution       try           InputStream inputStream   res openRawResource resId           try               BufferedReader reader   new BufferedReader new InputStreamReader inputStream                try                   StringBuilder result   new StringBuilder                    String line                  while   line   reader readLine       null                        result append line                                     return result toString                  finally                   reader close                            finally               inputStream close                    catch  IOException e               process exception

User · Answer

You can use this       try           Resources res   getResources            InputStream in s   res openRawResource R raw help            byte   b   new byte in s available             in s read b           txtHelp setText new String b          catch  Exception e               e printStackTrace            txtHelp setText  Error  can t show help

User · Answer

This is another method which will definitely work  but I cant get it to read multiple text files to view in multiple textviews in a single activity  anyone can help   TextView helloTxt    TextView findViewById R id yourTextView       helloTxt setText readTxt        private String readTxt      InputStream inputStream   getResources   openRawResource R raw yourTextFile    ByteArrayOutputStream byteArrayOutputStream   new ByteArrayOutputStream      int i  try   i   inputStream read    while  i    -1         byteArrayOutputStream write i      i   inputStream read          inputStream close      catch  IOException e        TODO Auto-generated catch block e printStackTrace        return byteArrayOutputStream toString

User · Answer

InputStream is getResources   openRawResource R raw name   BufferedReader reader new BufferedReader new InputStreamReader is    StringBuffer data new StringBuffer    String line reader readLine    while line  null    data append line   n      tvDetails seTtext data toString

User · Answer

Here is an implementation in Kotlin      try           val inputStream  InputStream   this getResources   openRawResource R raw             val inputStreamReader   InputStreamReader inputStream          val sb   StringBuilder           var line  String          val br   BufferedReader inputStreamReader          line   br readLine           while  line    null                sb append line              line   br readLine                     br close            var content   String   sb toString           Log d TAG  content        catch  e Exception           Log d TAG  e toString

User · Answer

Here is a simple method to read the text file from the raw folder   public static String readTextFile Context context  RawRes int id       InputStream inputStream   context getResources   openRawResource id       ByteArrayOutputStream outputStream   new ByteArrayOutputStream         byte buffer     new byte 1024       int size      try           while   size   inputStream read buffer      -1                outputStream write buffer  0  size                     outputStream close            inputStream close          catch  IOException e               return outputStream toString

[android] Android read text raw resource file

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