Android APIs
public static class

InputFilter.LengthFilter

extends Object
implements InputFilter
java.lang.Object
   ↳ android.text.InputFilter.LengthFilter

Class Overview

This filter will constrain edits not to make the length of the text greater than the specified length.

Summary

Public Constructors
InputFilter.LengthFilter(int max)
Public Methods
CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend)
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.
int getMax()
[Expand]
Inherited Methods
From class java.lang.Object
From interface android.text.InputFilter

Public Constructors

public InputFilter.LengthFilter (int max)

Added in API level 1

Parameters
max

Public Methods

public CharSequence filter (CharSequence source, int start, int end, Spanned dest, int dstart, int dend)

Added in API level 1

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). copySpansFrom(Spanned, int, int, Class, Spannable, int) can be used for convenience.

Parameters
source
start
end
dest
dstart
dend
Returns
CharSequence

public int getMax ()

Added in API level 21

Returns
int the maximum length enforced by this input filter