Question

I want to read several lines from a text file. These line should be displayed one by one, when I click the next button. I am able to store the strings in a file and read the first line. But when I try to read the next line using the next button, it stops working. Can anybody tell me a solution for this. Thanks in advance.

I have defined the following,

BufferedReader buffreader;      
String line;
String fav;
StringBuilder text;   
InputStream instream;     
String favQuote0;

This is in my oncreate method

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_save);
    StringBuilder text = new StringBuilder();        

    try {
        // open the file for reading
        InputStream instream = openFileInput("myfilename.txt");

        // if file the available for reading
        if (instream != null) {             
            // prepare the file for reading
            InputStreamReader inputreader = new InputStreamReader(instream);
            BufferedReader buffreader = new BufferedReader(inputreader);   

            while (( line = buffreader.readLine()) != null) {       
                text.append(line);
                text.append('\n');                  
                fav = text.toString();             
            }
        }
    } catch (IOException e) {}

    TextView tv1 = (TextView)findViewById(R.id.textView2);
    tv1.setText(fav);   
}

This is my next button

public void next (View view1) {         
    try {
        // open the file for reading
        InputStream instream = openFileInput("myfilename.txt");

        // if file the available for reading
        if (instream != null) {
            while (( line = buffreader.readLine()) != null) {               
                text.append(line);
                text.append('\n');                  
                fav = text.toString();             
            }
        }
    } catch (IOException e) {}

    TextView tv1 = (TextView)findViewById(R.id.textView2);
    tv1.setText(fav);
}

Answer 1

Try this. This i working for me

BufferedReader reader = new BufferedReader(new InputStreamReader(instream));
StringBuffer bf = new StringBuffer();
String json = reader.readLine();
try {
do {

    bf.append(json);
    json = reader.readLine();
}while (json != null);
wt.flush();
wt.close();
Log.d("LOG", " read line output "+new String(bf)+" json "+json);
reader.close();     
} catch (Exception e) {
e.printStackTrace(); }

wt is the bufferedwriter which i used to write line. I read from reader and write into file stored locally.