CODEWITHSUNDEEP
androidfile-handlinginternal-storage
user8412759
user8412759

Reputation:

Reading txt file from Internal storage returns FIleNotFound even file is present at the address

i am trying to read file from internal storage. the file is available in internal storage at given location and the code is able to access it.. but when it tries to open the file , it throws FileNotFound Exception which is due to the app can't open the file to read. I came to know about the app can't open the file by using file.canRead() method which is returning false. can anybody help me to figure the situation out? Here is my code

path = MainActivity.this.getFilesDir().getAbsolutePath();
try {
        File file = new File(path, "jamshaid.txt");
        Context ctx = getApplicationContext();
        FileInputStream fileInputStream = ctx.openFileInput(file.getName());
        InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream);
        BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
        String lineData = bufferedReader.readLine();
        view1.setText(lineData);

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

Permissions

<uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

API Version of my device is 24

What i wanna do?

i am trying to parsethe file/set text file data to textView

Update1

after changing
File directory = MainActivity.this.getFilesDir(); File file = new File(directory, "jamshaid.txt");
i am getting the following error 

`09-25 14:45:16.413 21144-21144/com.example.root.testingvolley     W/System.err: java.io.FileNotFoundException: /data/user/0/com.example.root.testingvolley/files/jamshaid.txt (No such file or directory)`

Upvotes: 0

Views: 514

Answers (2)

Mohammod Hossain
Mohammod Hossain

Reputation: 4114

Try this for directory path

File directory = context.getFilesDir();
File file = new File(directory, filename);

Or

public String getTextFileData(String fileName) {

        StringBuilder text = new StringBuilder();


        try {


         FileInputStream fIS = getApplicationContext().openFileInput(fileName);
         InputStreamReader isr = new InputStreamReader(fIS, "UTF-8");
         BufferedReader br = new BufferedReader(isr);

            String line;

            while ((line = br.readLine()) != null) {
                text.append(line + '\n');
            }
            br.close();
        } catch (IOException e) {
            Log.e("Error!", "Error occured while reading text file from Internal Storage!");

        }

        return text.toString();

    }

Upvotes: 1

LonelyCpp
LonelyCpp

Reputation: 2673

How are you verifying that the file exists? Perhaps the file does not exist, in which case openFileInput() will throw FileNotFoundException.

You can try opening the file in write-mode which will create a file if no such file exists.

FileOutputStream fileOutputStream = ctx.openFileOutput(file.getName(), ctx.MODE_PRIVATE);

Upvotes: 0

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