How to make Android Read txt file and setText or append to a TextView

Discussion in 'Android App Developers' started by r2sjoblom, Dec 5, 2011.

  1. r2sjoblom

    r2sjoblom New Member

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    Below is a sample from one of my class files that I am having problems with. What I really just want to do is to add a button to open a new Intent Activity with ACTION_VIEW to display the text file. This wasn't working inside the OnClickListener:

    File file = new File(file://android_assets/browsercode.txt);Intent newintent = new Intent(android.conteent.Intent.ACTION_VIEW);
    newintent.setData(file);
    startActivity(newintent);

    It just gave me an error. So instead i am going to just try to read the file's contents into a string and output it to a TextView. This wasn't working either. If anyone has any suggestion on either way, that would be greatful. I have tried many variations of each and got NOWHERE. I perfer the one above with the button click though.

    Thanks in advance for any help.

    public​
    class CodeSlider extends Activity {
    TextView
    textcode;
    @Override
    protectedvoid onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.
    codeslider);
    textcode
    = (TextView)findViewById(R.id.codetext);
    readthefile();
    }
    privatevoid readthefile() {
    //
    TODO Auto-generated method stub
    File file = ​
    new File(file://android_assets/browsercode.txt);
    int i=0;
    FileReader into =
    null;
    try
    {into = new FileReader(file); // And a char stream to read it
    char[] buffer = newchar[4096]; // Read 4K characters at a time
    int len; // How many chars read each time
    while ((len = into.read(buffer)) != -1){
    String s =
    new String(buffer, 0, len);
    i++;

    textcode
    .append(s);
    }
    }
    catch(IOException e) {
    System.
    out.println("Error");return;
    }
    }
    }
     
  2. r2sjoblom

    r2sjoblom New Member

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    Got it!

    I needed to use AssetManager API to import the stuff in the assets/ directory. Below is the code for anyone that needs it.

    import​

    java.io.IOException;

    import​

    java.io.InputStream;

    import​

    android.app.Activity;

    import​

    android.content.res.AssetManager;

    import​

    android.os.Bundle;

    import​

    android.widget.TextView;

    public​

    class CodeSlider extends Activity {
    @Override
    protectedvoid onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.
    codeslider);
    TextView text = (TextView)findViewById(R.id.
    codetext);
    AssetManager am = CodeSlider.
    this.getAssets();
    int i=0;try {InputStream is = am.open("browsercode.txt");
    byte
    [] buffer = newbyte[4096]; // Read 4K characters at a time
    int len; // How many chars read each time
    while ((len = is.read(buffer)) != -1){
    String s =
    new String(buffer, 0, len);
    text.append( s );
    i++;

    }
    }
    catch(IOException e) {
    System.
    out.println("Error");
    return
    ;
    }
    }

    }
     
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