CODEWITHSUNDEEP
javaandroid
user3129457
user3129457

Reputation: 5

Read from file but I didn't see in android?

I want to read from txt file and send to TextView. My method works on Java Project I read and I see System.out.print but the same method doesnt work in MainActivity. How can I fixed.Thanks

MainActivity

    public class MainActivity extends Activity {
    TextView txt;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        txt=(TextView)findViewById(R.id.textView1);

        Parsing p =new Parsing();
        try {
            String gelen=p.readTxt();
            txt.setText(gelen);             
        } 
            catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }       
}

Parsing:

    public class Parsing {


    public String readTxt() throws FileNotFoundException
    {
         File file = new File("C:\\Users\\John\\Desktop\\try.txt");
            StringBuilder fileContents = new StringBuilder((int)file.length());
            Scanner scanner = new Scanner(file);
            String lineSeparator = System.getProperty("line.separator");

            try {
                while(scanner.hasNextLine()) {        
                    fileContents.append(scanner.nextLine() + lineSeparator);
                }
                return fileContents.toString();
            } finally {
                scanner.close();
            }
    }
}

I'm working it but I see just TextView.

Upvotes: 0

Views: 137

Answers (5)

Pradip
Pradip

Reputation: 3177

First of all Android Application Project is different from Java Project.
You can not use File file = new File("C:\\Users\\John\\Desktop\\try.txt"); in android.

Place your text file in the /assets directory under the Android project. Use AssetManager class to access it. 

AssetManager am = context.getAssets();
InputStream is = am.open("test.txt");

If you are going to access file from memory card, Then use inputsteram is in your program. Also you need the following permission to read the text file

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

Upvotes: 0

Nambi
Nambi

Reputation: 12042

you cannot specify the computer directory files to the android file path location to read lines in it.

  1. just put the file into your android project folder like assests and change the path and then try.

Upvotes: 3

Ratz
Ratz

Reputation: 81

How can I read a text file in Android?

I don't mean to be rude but try to search first. This question with similar problem was already asked.

I hope this link will help you.

Cheers

Upvotes: 1

HpTerm
HpTerm

Reputation: 8281

You must put the file in the asset folder of your project. Then to access it you can do something like

BufferedReader reader = new BufferedReader(
        new InputStreamReader(getAssets().open("filename.txt")));

for more details read my answer here :

read file from assets

Upvotes: 0

Kulibin
Kulibin

Reputation: 444

For file on sdcard ("sdcard\myfolder\1.txt") please use:

File file = new File(Environment.getExternalStorageDirectory(), "myfolder\1.txt");

Also dont forget:

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

Upvotes: 0

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