在EditText的日期中添加一个斜杠

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

editText.addTextChangedListener(new TextWatcher() {
    private boolean isFormatting;
    private String previousText;

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        previousText = s.toString();
    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
    }

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

        String text = s.toString();
        if (!text.equals(previousText)) {
            String formattedText = formatText(text); // 格式化文本，在指定位置插入斜杠
            isFormatting = true;
            s.replace(0, s.length(), formattedText);
            isFormatting = false;
        }
    }
});

private String formatText(String text) {
    // 假设日期格式为DDMMYYYY
    if (text.length() == 2 || text.length() == 5) {
        text += "/";
    }
    return text;
}

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

editText.setOnKeyListener(new View.OnKeyListener() {
    @Override
    public boolean onKey(View v, int keyCode, KeyEvent event) {
        if (event.getAction() == KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_DEL) {
            int cursorPosition = editText.getSelectionStart();
            String text = editText.getText().toString();

            if (cursorPosition == 3 || cursorPosition == 6) {
                // 如果光标在斜杠后面，删除斜杠
                editText.setText(text.substring(0, cursorPosition - 1) + text.substring(cursorPosition));
                editText.setSelection(cursorPosition - 1);
                return true;
            }
        }
        return false;
    }
});