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So, I am trying to get an edit text to put a dollar sign ($) in front of the input text after a user enters it using the following code. Whenever I try to enter anything into the edittext it locks the whole app. I have tried removing the code and the box works fine. What should I change? Or should I use an entirely different solution?

Code:

final EditText minAmt = fragView.findViewById(R.id.minPayment);

 minAmt.addTextChangedListener(new TextWatcher()
 
 @Override
 public void afterTextChanged(Editable s)
 
 minAmt.setText("$" + minAmt.getText().toString());
 
 @Override
 public void beforeTextChanged(CharSequence s, int start, int count, int after) 
 
 @Override
 public void onTextChanged(CharSequence s, int start, int before, int count) 
 
 );

Do I need to finish the overrides for on- and before- text changed?
For reference, I got this code frame from another thread here: Adding Dollar Sign ($) Automatically In Edit Text for Android Studio

Your app freezes because you enter an infinite loop. Calling setText inside afterTextChanged will call afterTextChanged. The solution is :

@Override
public void afterTextChanged(Editable s)

 minAmt.removeTextChangedListener(this);
 minAmt.setText("$" + minAmt.getText().toString());
 minAmt.addTextChangedListener(this);