CODEWITHSUNDEEP
androidandroid-studio
mohammad
mohammad

Reputation: 86

open text file from several file when clicked on button in android

i want create a book in android stodio for example: i want when i click on first_season button open text1.txt file and when click on second_season button open text2.txt file and the rest as I said. and i dont want make a activity for each page. and i want use switch case for get button id and based on that id open the text file. i just want to know how use switch case for create this application. i use this code for open txt file:

TextView txtView = (TextView)findViewById(R.id.hellotxt);

    InputStream inputStream = getResources().openRawResource(R.raw.nitish);

    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

    int i;
    try {
        i = inputStream.read();
        while (i != -1)
        {
            byteArrayOutputStream.write(i);
            i = inputStream.read();
        }
        inputStream.close();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    txtView.setText(byteArrayOutputStream.toString());

consider names of my buttons are season1, season2, season3, season4 and name of my text files are txt1, txt2, txt3, txt4 thank for helping

Upvotes: 0

Views: 232

Answers (1)

Blundell
Blundell

Reputation: 76458

Something like this you mean?

Map<Int, String> lookupTable = new HashMap<>();

lookupTable.put(R.id.season1, "txt1");
lookupTable.put(R.id.season2, "txt2");
// etc


for (Map.Entry<String,String> entry : lookupTable.entrySet()) {  
     findViewById(entry.getKey()).setOnClickListener(new View.OnClickListener() {
          @Override
          public void onClick(View v) {
               txtView.setText(readBookPageFromFile(entry.getValue());
          }

})

}

Where readBookPageFromFile is your above code with the filename as a parameter.

Upvotes: 1

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