如何在编辑文本中输入内容后更改文本视图颜色

Question

when the user has put something according to written on the enter image description here text I want that text color to change like in this image

Answer 1

If this is a password checker then there is probably already a library for this. Otherwise, you could use addTextChangedListener() to listen for text changes in your EditText then call setTextColor() to change the of the EditText.

Answer 2

after addTextChangedListener() in OnTextChanged method add this and can set color

if (charSequence.toString().contains("^[0-9]*$")) {//numbers
                        
}
if (charSequence.toString().contains("^[a-z]*$")){//lower case
    
}
if (charSequence.toString().contains("^[A-Z]*$")){//uppercase
    
}
if (charSequence.toString().length()==9){//ten characters
    
}