带数字键盘的EditText，但允许字母数字值

Question

Problem:

• my own class which extends EditTextPreference

• a method within that class called " setInputType() " with this.getEditText().setRawInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED);

• my xml with elements of my own EditText-class with

  • title, summary, key, defaultValue, digits, nothing else.
  • android:digits="1234567890"

What i want is:

• the default value will always be numeric, but leading zeros have to be possible. so my thought was, that I have to either have a inputtype "phone" or "text", although i dont want letters to be allowed. as you see

my problem:

I can type the numbers from 0123456789 , but my edittext opens with the normal keyboard. but when I tried to change it to numeric keyboard, I couldnt manage to make the 0 be allowed. Is there a clean solution? everything i found is either just making the numeric keyboard as default OR allowing my wanted digits.

Thank you for your help :)

Answer 1

Change XML's Edit text with simply this ::

<EditText 
        android:id="@+id/edittext"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:maxLength="50"
        android:singleLine="true"
    />

And code as ::

editText.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_NORMAL);