Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
680 views
in Technique[技术] by (71.8m points)

android - How do you refresh PreferenceActivity to show changes in the settings?

Based on the following code, can you tell me how to refresh the PreferenceActivity window to show changes in the settings immediately? For example: the user taps the master chime toggle checkbox to true (ticked), I would like the user to immediately see the other settings such as the ChimeOn15Past checkbox also be be true (ticked)

SharedPreferences.Editor prefEditor = clockSettings.edit(); // Allow the settings to be changed.

if (booleanMasterChimeToggle == true) {
    prefEditor.putBoolean("ChimeOnTheHour", true);
    prefEditor.putBoolean("ChimeOn15Past", true);
    prefEditor.putBoolean("ChimeOn30Past", true);
    prefEditor.putBoolean("ChimeOn45Past", true);

    strNotifyMessage = "Full chiming has now been set.";

} else {
    prefEditor.putBoolean("ChimeOnTheHour", false);
    prefEditor.putBoolean("ChimeOn15Past", false);
    prefEditor.putBoolean("ChimeOn30Past", false);
    prefEditor.putBoolean("ChimeOn45Past", false);

    strNotifyMessage = "Full chiming has now been disabled.";
}
See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

Instead of

finish();
startActivity(getIntent());

I prefer the following code :

setPreferenceScreen(null);
addPreferencesFromResource(R.xml.preferences);

This will reset the display as well but without the whole finish procedure and its consequences. Plus this code works well with PreferenceActivity and PreferenceFragment.

This is interesting if you would like to change dynamically the locale value for example. In this case, working with the manager is not enough because you want a full reload of titles and values.

EDIT: setPreferenceScreen is deprecated in PreferenceActivity (still working) but is not in PreferenceFragment


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

2.1m questions

2.1m answers

60 comments

57.0k users

...