Android EditText -只支持数字输入

EditText editText = findViewById(R.id.editText);
editText.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL);

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) {}

    @Override
    public void afterTextChanged(Editable s) {
        String text = s.toString();
        if (text.matches("\\d*")) {
            // 只允许数字
        } else {
            // 移除非数字字符
            s.replace(0, s.length(), text.replaceAll("[^\\d]", ""));
        }
    }
});

@Override
public void afterTextChanged(Editable s) {
    String text = s.toString();
    if (text.matches("\\d*")) {
        // 只允许数字
    } else {
        // 移除非数字字符
        s.replace(0, s.length(), text.replaceAll("[^\\8]", ""));
    }
}