Read the created file and display to the screen : File « File « Android






  1. Android
  2. File
  3. File

Read the created file and display to the screen

    
package app.test;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class Test extends Activity {

    private static final String FILENAME = "data.txt";
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        TextView tv = new TextView(this);
        setContentView(tv);
        
        try {
            FileOutputStream mOutput = openFileOutput(FILENAME, Activity.MODE_PRIVATE);
            String data = "THIS DATA WRITTEN TO A FILE";
            mOutput.write(data.getBytes());
            mOutput.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        try {
            FileInputStream mInput = openFileInput(FILENAME);
            byte[] data = new byte[128];
            mInput.read(data);
            mInput.close();
            
            String display = new String(data);
            tv.setText(display.trim());
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        deleteFile(FILENAME);    
    }
}








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