Class NumberInputFilter

java.lang.Object
icyllis.modernui.text.method.NumberInputFilter
All Implemented Interfaces:
InputFilter
Direct Known Subclasses:
DigitsInputFilter

public abstract class NumberInputFilter extends Object implements InputFilter
Input filter for numeric text.
  • Constructor Details

    • NumberInputFilter

      public NumberInputFilter()
  • Method Details

    • getAcceptedChars

      @Nonnull protected abstract char[] getAcceptedChars()
      You can say which characters you can accept.
    • filter

      public CharSequence filter(@Nonnull CharSequence source, int start, int end, @Nonnull Spanned dest, int dstart, int dend)
      Description copied from interface: InputFilter
      This method is called when the buffer is going to replace the range dstart … dend of dest with the new text from the range start … end of source. Return the CharSequence that you would like to have placed there instead, including an empty string if appropriate, or null to accept the original replacement. Be careful to not to reject 0-length replacements, as this is what happens when you delete text. Also beware that you should not attempt to make any changes to dest from this method; you may only examine it for context.

      Note: If source is an instance of Spanned or Spannable, the span objects in the source should be copied into the filtered result (i.e. the non-null return value). TextUtils.copySpansFrom(icyllis.modernui.text.Spanned, int, int, java.lang.Class<?>, icyllis.modernui.text.Spannable, int) can be used for convenience if the span boundary indices would be remaining identical relative to the source.

      Specified by:
      filter in interface InputFilter
    • not

      protected static boolean not(@Nonnull char[] accept, char c)