InputFilter.AllCaps

Page Summary

• InputFilter.AllCaps is a class that implements InputFilter and automatically capitalizes all lowercase letters during text input.

• It provides a single public constructor AllCaps() to create an instance of the filter.

• The core functionality lies in the filter method, which intercepts and modifies text input before it's displayed.

• This filter is specifically designed to convert any lowercase letters within the input to uppercase.

public static class InputFilter.AllCaps extends Object
implements InputFilter

This filter will capitalize all the lower case letters that are added through edits.

Public Constructor Summary

AllCaps()

Public Method Summary

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.

Inherited Method Summary

From class java.lang.Object

Object	clone()
boolean	equals(Object arg0)
void	finalize()
final Class<?>	getClass()
int	hashCode()
final void	notify()
final void	notifyAll()
String	toString()
final void	wait(long arg0, int arg1)
final void	wait(long arg0)
final void	wait()

From interface android.text.InputFilter

abstract 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.

Public Constructors

public AllCaps ()

Public Methods

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

Parameters

source
start
end
dest
dstart
dend