how to erase text

Programming Questions

baris22

in Programming Questions • 10 months ago

hello,

how can i erase the text by using Backspace key.
This is not working

if (keyPressed) {
if (key != '\n' && key != CODED) {
if (typing.length() < 10){
typing = typing + key;
}
}
if (key == BACKSPACE) {
if (typing.length() > 0) {
typing = typing.substring(0, typing.length()-1);
}
}
}
text(typing, 345, 372);

Replies(3)

PhiLho

" This is not working"
Talk about non-descriptive problem report! Particularly with a non-runnable code...

Anyway, you can try and use the keyPressed() function instead of the keyPressed variable in draw(), that you avoid you some duplicates.
Add some println() to know what is going on: if you enter an if condition, what key you have, etc.

timpulver

Re: how to erase text

10 months ago

The problem was, that you added the backspace charcter to the String. You only checked if the character is coded, not if it is a backspace!

String typing = "";
void setup() {
size(500, 500);
}
void draw() {
background(0);
text(typing, 345, 372);
}
void keyPressed() {
if (typing.length() < 10 && key != CODED && key != '\n' && key != BACKSPACE) {
typing = typing + key;
}
else if (key == BACKSPACE && typing.length() > 0) {
typing = typing.substring(0, typing.length()-1);
}
}

baris22

Re: how to erase text

10 months ago

thanks alot.

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how to erase text

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