How to add extra numbers in textbox automatically-CodePudding

i am trying to make a textbox that has its limit of 32 characters.

If someone enters value like 1234 the program must add 26 Zeros infront example

0000...1234

I have made the limit for 32 characters in xml

android:maxLength="32"

CodePudding user response：

public String appendChars(String string) {

    int expectedSize = 32;
    // 32 zeros string
    String zeros = "00000000000000000000000000000000";
    int inputLength = string.length();

    // append and return
    if (inputLength < expectedSize) {
        string = zeros.substring(0, expectedSize - inputLength)   string;
    }

    return string;

}

can do something like this

CodePudding user response：

You can try like this

getValue = editText.getText().toString();
int number = 32;

if(editText.length() < number){
number -= getValue.length();
for(int i=0; i< number; i  ){
getValue =0;
}
editText.setText(getValue);
}