SpanWatcher

  • SpanWatcher is an interface used to monitor changes to markup objects (spans) within a Spannable text.

  • It provides callbacks for when spans are added, changed, or removed from the text.

  • Implementations of SpanWatcher can be attached to a Spannable to receive notifications about span modifications.

  • These notifications include details about the affected span, its previous and current positions in the text.
public interface SpanWatcher implements NoCopySpan

When an object of this type is attached to a Spannable, its methods will be called to notify it that other markup objects have been added, changed, or removed.

Public Method Summary

abstract void
onSpanAdded(Spannable text, Object what, int start, int end)
This method is called to notify you that the specified object has been attached to the specified range of the text.
abstract void
onSpanChanged(Spannable text, Object what, int ostart, int oend, int nstart, int nend)
This method is called to notify you that the specified object has been relocated from the range ostart…oend to the new range nstart…nend of the text.
abstract void
onSpanRemoved(Spannable text, Object what, int start, int end)
This method is called to notify you that the specified object has been detached from the specified range of the text.

Public Methods

public abstract void onSpanAdded (Spannable text, Object what, int start, int end)

This method is called to notify you that the specified object has been attached to the specified range of the text.

Parameters
text
what
start
end

public abstract void onSpanChanged (Spannable text, Object what, int ostart, int oend, int nstart, int nend)

This method is called to notify you that the specified object has been relocated from the range ostart…oend to the new range nstart…nend of the text.

Parameters
text
what
ostart
oend
nstart
nend

public abstract void onSpanRemoved (Spannable text, Object what, int start, int end)

This method is called to notify you that the specified object has been detached from the specified range of the text.

Parameters
text
what
start
end