Preference.SummaryProvider
interface Preference.SummaryProvider<T : Preference?>
EditTextPreference.SimpleSummaryProvider |
A simple |
ListPreference.SimpleSummaryProvider |
A simple |
Interface definition for a callback to be invoked when the summary of this Preference is requested (typically when this preference is added to the hierarchy or its value is updated). Implement this to allow dynamically configuring a summary.
If a SummaryProvider is set, setSummary will throw an exception, and any existing value for the summary will not be used. The value returned by the SummaryProvider will be used instead whenever getSummary is called on this preference.
Simple implementations are provided for EditTextPreference and ListPreference. To enable these implementations, use setSummaryProvider with getInstance or getInstance.
| Parameters | |
|---|---|
<T : Preference?> |
The Preference class that a summary is being requested for |
Summary
Public functions |
|
|---|---|
CharSequence? |
provideSummary(preference: T)Called whenever |
Public functions
provideSummary
fun provideSummary(preference: T): CharSequence?
Called whenever getSummary is called on this preference.
| Parameters | |
|---|---|
preference: T |
This preference |
| Returns | |
|---|---|
CharSequence? |
A CharSequence that will be displayed as the summary for this preference |