Question

How can i erase character from a text string by pressing the back space key.
This is what i have got so far. It only deletes the last character.

if (keyPressed) {
    if (key != '\n' && key != CODED) {
        if (typing.length() < 5){
            typing = typing + key;
        }
    }
    if (key == BACKSPACE) {
        if (typing.length() > 0) {
            typing = typing.substring(0, typing.length()-1);
        }
    }
}

text(typing, 345, 372);

Answer 1

That’s because BACKSPACE is not CODED, so while typing.length() is smaller than 5and you press BACKSPACE you meet both conditions breaking stuff. When it reaches 5 it only mets second condition: if (key == BACKSPACE) so it works, bringing it back to less than 5 so it won’t work again…

As a test try:if (key != '\n' && key != CODED && key != BACKSPACE)
But i think you might want a switch (key) to do the job.

Also you better use void keyPressed() or keyReleased() or keyTyped()
Instead of keyPressed the field, in draw(). Or you will need to handle key repetition yourself…