Question

I have a TextView and a String randomWord. When the app starts I open my db and call a method db.open() which opens it and then the db.randomize() which calls the randomize() method and queries the db for random entry and returns it as a String. Thereafter I just want to MyTextView.setText (randomWord); but when app is running nothing is displaying. I have tried to hardcode in setText (“whatever”) and that is shown.

So I guess I have done wrong in the randomize or something because I don’t get a word from the db.

This is what I try to do:

 db.open();
        db.randomize(generatedWord);
        //text = new SpannableString(generatedWord);
        //text.setSpan(new ForegroundColorSpan(Color.WHITE), 0, text.length(), 0);  
        wordHolder.setText("" + generatedWord);
        db.close();

This is my random method:

  public Cursor randomize(String word) {
            @SuppressWarnings("unused")
            Cursor cursor;
            return cursor =  this.db.query("tblnames ORDER BY RANDOM() LIMIT 1", new String[] { "*" }, null, null, null, null, null);
        }

My DB has two columns: “_id” and “word”

"create table tblnames (_id integer primary key autoincrement, "
     + "words text not null);"

Can it have to do that I don’t specify the _id and word somewhere in the randomize()?

ALSO: I tried setText (generatedWord) as well as setText (” +generatedWord);
ALSO: no errors while running.

Answer 1

You aren’t returning a String with your randomize() method.

This should give you the desired affect

db.open();
//text = new SpannableString(generatedWord);
//text.setSpan(new ForegroundColorSpan(Color.WHITE), 0, text.length(), 0);  
wordHolder.setText(db.randomize());
db.close();

And in your DB you need to return the string value of the column you want from your cursor, not the cursor itself. http://developer.android.com/reference/android/database/Cursor.html#getString(int)

public String randomize() {
    Cursor cursor;
    cursor =  this.db.query("tblnames ORDER BY RANDOM() LIMIT 1", new String[] { "*" }, null, null, null, null, null);
    if(cursor.moveToFirst()) {
        return cursor.getString(cursor.getColumnIndexOrThrow( "word" ));
    }
    return "";
}