Reading a file in android

Question

I am writing an android app where I am trying to read from a data base that I added in assets folder in main folder. But I am get an error file not found exception

public File database = new File("/assets/GeoIP2.mmdb");

PS : It's a database file not a text file.

Possible duplicate of [Reading a simple text file](http://stackoverflow.com/questions/5771366/reading-a-simple-text-file) — Mohammed Atif, Apr 19 '17 at 09:45
i think public File database = new File("GeoIP2.mmdb"); its enough — Srinivas Keerthiprakasam, Apr 19 '17 at 09:49
Check this - http://www.androprogrammer.com/2014/08/create-or-copy-database-in-android.html — Wasim K. Memon, Apr 19 '17 at 10:00
It's the same method, though. You can't treat assets like regular files. You have to get an `InputStream` from `AssetManager`. http://stackoverflow.com/a/5771381 — Mike M., Apr 19 '17 at 10:31
@Ashwin with 3,278 points I assumed that you will be able to figure out that reading a file, text or db, will have same procedure. Next time I will make sure I provide explanation too. — Mohammed Atif, Apr 19 '17 at 10:38

score 0 · Answer 1 · answered Apr 19 '17 at 09:44

0

This is the proper way to read files from assets folder

AssetManager am = context.getAssets();
InputStream is = am.open("GeoIP2.mmdb");

answered Apr 19 '17 at 09:44

Ajay Venugopal

1,544
1
17
30

score 0 · Answer 2 · answered Apr 19 '17 at 09:47

you can try this below code its working 100%

private String readFromFile(String name) {

    String ret = "";

    try {
        InputStream inputStream = getAssets().open(name + ".txt");

        if (inputStream != null) {
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
            String receiveString = "";
            StringBuilder stringBuilder = new StringBuilder();

            while ((receiveString = bufferedReader.readLine()) != null) {
                stringBuilder.append(receiveString);
                stringBuilder.append("\n");
            }

            inputStream.close();
            ret = stringBuilder.toString();
        }
    } catch (FileNotFoundException e) {
        Log.e(TAG, "File not found: " + e.toString());
    } catch (IOException e) {
        Log.e(TAG, "Can not read file: " + e.toString());
    }

    return ret;
}

just change the format of your file instead of .txt

score 0 · Answer 3 · answered Apr 19 '17 at 09:49

0

InputStream is = getAssets().open("thirukkuralxml.xml");

answered Apr 19 '17 at 09:49

Srinivas Keerthiprakasam

885
11
29

score -1 · Answer 4 · answered Apr 19 '17 at 09:48

 try{
            String verify, putData;
            File file = new File("file.txt");
            file.createNewFile();
            FileWriter fw = new FileWriter(file);
            BufferedWriter bw = new BufferedWriter(fw);
            bw.write("Some text here for a reason");
            bw.flush();
            bw.close();
            FileReader fr = new FileReader(file);
            BufferedReader br = new BufferedReader(fr);

            while( (verify=br.readLine()) != null ){ //***editted
                       //**deleted**verify = br.readLine();**
                if(verify != null){ //***edited
                    putData = verify.replaceAll("here", "there");
                    bw.write(putData);
                }
            }
            br.close();


        }catch(IOException e){
        e.printStackTrace();
        }

Reading a file in android

4 Answers4