I cannot find any tutorials on checkbox preference. I can use a listpreference, but I can't use checkbox preference. For now, I want that if user sets on the checbox, a toast msg says "true" and if he sets it off, the toast msg says "false". So far I have this:
preferences.xml:
<CheckBoxPreference
android:title="Show Call UI"
android:defaultValue="true"
android:summary="Show Call Interface when clicking call button"
android:key="checkboxPref" />
EditPreferences.java:
public class EditPreferences extends PreferenceActivity {
String listPreference;
boolean checkboxPreference;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
}
public void onStart(Intent intent, int startId) {
getPrefs();
}
private void getPrefs() {
SharedPreferences prefs = PreferenceManager
.getDefaultSharedPreferences(getBaseContext());
listPreference = prefs.getString("listPref", "nr1");
checkboxPreference = prefs.getBoolean("checkboxPref", true);
}
}
Edit: Solution thanks to David Caunt:
checkboxPreference.
setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
public boolean onPreferenceChange(Preference preference, Object newValue) {
if (newValue.toString().equals("true")) {
Toast.makeText(getApplicationContext(), "CB: " + "true",
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getApplicationContext(), "CB: " + "false",
Toast.LENGTH_SHORT).show();
}
return true;
}
});
You need to add a listener to the Preference in your onCreate method
final CheckBoxPreference checkboxPref = (CheckBoxPreference) getPreferenceManager().findPreference("checkboxPref");
checkboxPref.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
public boolean onPreferenceChange(Preference preference, Object newValue) {
Log.d("MyApp", "Pref " + preference.getKey() + " changed to " + newValue.toString());
return true;
}
});
You can cast the value of the checkbox into a boolean. This might be safer and more extensible than checking the toString() value.
final CheckBoxPreference checkboxPref = (CheckBoxPreference) getPreferenceManager().findPreference("checkboxPref");
checkboxPref.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
public boolean onPreferenceChange(Preference preference, Object newValue) {
if(newValue instanceof Boolean){
Boolean boolVal = (Boolean)newValue;
}
return true;
}
});
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
Log.i("LOG", String.valueOf(sp.getBoolean("key", false)));
Simplest way i found of getting value if item is pressed. If log is:
I/LOG: true
Checkbox is pressed
I/LOG: false
Checkbox is not selected
Hope this answers your question.
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