Cocher plusieurs checkbox
Bonjour,
J'ai une classe (voir code ci-dessous) qui me permet de cocher plusieurs choix dans une ListPreferencres ( par défaut on ne peut en sélectionné que 1, sauf à partir de l'API 11).
Cependant j'aimerais peaufiner le code. J'aimerais créer une méthode qui me permettrai d'effectuer la tâche suivante : si l'une des valeurs cochées est = "ALL" alors on sélectionne toutes les checkbox de ma liste. Pourriez vous m'aider ? Merci par avance.
Voici ma classe
Code:
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package com.preferences;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.preference.ListPreference;
import android.util.AttributeSet;
import android.widget.Toast;
/**
* A {link Preference} that displays a list of entries as
* a dialog and allows multiple selections
* <p>
* This preference will store a string into the SharedPreferences. This string will be the values selected
* from the {@link #setEntryValues(CharSequence[])} array.
* </p>
*/
public class ListPreferenceMultiSelect extends ListPreference {
//Need to make sure the SEPARATOR is unique and weird enough that it doesn't match one of the entries.
//Not using any fancy symbols because this is interpreted as a regex for splitting strings.
private static final String SEPARATOR = "OV=I=XseparatorX=I=VO";
private boolean[] mClickedDialogEntryIndices;
public ListPreferenceMultiSelect(Context context, AttributeSet attrs) {
super(context, attrs);
mClickedDialogEntryIndices = new boolean[getEntries().length];
}
@Override
public void setEntries(CharSequence[] entries) {
super.setEntries(entries);
mClickedDialogEntryIndices = new boolean[entries.length];
}
public ListPreferenceMultiSelect(Context context) {
this(context, null);
}
@Override
protected void onPrepareDialogBuilder(AlertDialog.Builder builder) {
CharSequence[] entries = getEntries();
CharSequence[] entryValues = getEntryValues();
if (entries == null || entryValues == null || entries.length != entryValues.length ) {
throw new IllegalStateException(
"ListPreference requires an entries array and an entryValues array which are both the same length");
}
restoreCheckedEntries();
builder.setMultiChoiceItems(entries, mClickedDialogEntryIndices,
new DialogInterface.OnMultiChoiceClickListener() {
public void onClick(DialogInterface dialog, int which, boolean val) {
mClickedDialogEntryIndices[which] = val;
}
});
}
public static String[] parseStoredValue(CharSequence val) {
if ( "".equals(val) )
return null;
else
return ((String)val).split(SEPARATOR);
}
private void restoreCheckedEntries() {
CharSequence[] entryValues = getEntryValues();
String[] vals = parseStoredValue(getValue());
if ( vals != null ) {
for ( int j=0; j<vals.length; j++ ) {
String val = vals[j].trim();
for ( int i=0; i<entryValues.length; i++ ) {
CharSequence entry = entryValues[i];
if ( entry.equals(val) ) {
mClickedDialogEntryIndices[i] = true;
break;
}
}
}
}
}
@Override
protected void onDialogClosed(boolean positiveResult) {
// super.onDialogClosed(positiveResult);
CharSequence[] entryValues = getEntryValues();
if (positiveResult && entryValues != null) {
StringBuffer value = new StringBuffer();
for ( int i=0; i<entryValues.length; i++ ) {
if ( mClickedDialogEntryIndices[i] ) {
value.append(entryValues[i]).append(SEPARATOR);
}
}
if (callChangeListener(value)) {
String val = value.toString();
if ( val.length() > 0 )
val = val.substring(0, val.length()-SEPARATOR.length());
setValue(val);
}
}
}
} |
