EditText删除与符号和文本的其余部分

EditText editText = findViewById(R.id.editText);

editText.addTextChangedListener(new TextWatcher() {
    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        if (count < before) { // 判断是否为删除操作
            int cursorPosition = editText.getSelectionStart(); // 获取光标位置
            String text = editText.getText().toString(); // 获取EditText中的文本内容

            String deletedText = text.substring(0, cursorPosition - 1) + text.substring(cursorPosition); // 删除光标前的字符
            editText.setText(deletedText); // 设置EditText的文本内容
            editText.setSelection(cursorPosition - 1); // 设置光标位置
        }
    }

    @Override
    public void afterTextChanged(Editable s) {
    }
});