1
실행 가능한 모든 설치된 앱과 함께 선택 가능한 목록을 표시합니다. 선택 사항을 저장하지는 않았지만 ListPreference는 나열된 모든 항목을 저장했습니다.Android ListPreference 선택 사항을 저장하지 않음
내 실수는 어디에서 왔습니까? 난 당신이 구분을 제외하고 잘 작동 this gist에서 코드를 사용할 생각
공용 클래스 SettingsSelectsApps이 ListPreference {
private String separator;
private static final String DEFAULT_SEPARATOR = "\u0001\u0007\u001D\u0007\u0001";
private boolean[] entryChecked;
public SettingsSelectsApps(Context context, AttributeSet attributeSet) {
super(context, attributeSet);
loadEntries();
entryChecked = new boolean[getEntries().length];
separator = DEFAULT_SEPARATOR;
}
public SettingsSelectsApps(Context context) {
this(context, null);
}
private void loadEntries() {
final Context context = getContext();
final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
final List<ResolveInfo> pkgAppsList = context.getPackageManager().queryIntentActivities(mainIntent, 0);
CharSequence[] entries = new CharSequence[pkgAppsList.size()];
CharSequence[] entryValues = new CharSequence[pkgAppsList.size()];
int j = 0;
for (ResolveInfo P : pkgAppsList) {
entryValues[j] = (CharSequence) P.getClass().getName();
entries[j] = P.loadLabel(context.getPackageManager());
++j;
};
setEntries(entries);
setEntryValues(entryValues);
}
@Override
protected void onPrepareDialogBuilder(Builder builder) {
CharSequence[] entries = getEntries();
CharSequence[] entryValues = getEntryValues();
if (entries == null || entryValues == null || entries.length != entryValues.length) {
throw new IllegalStateException(
"MultiSelectListPreference requires an entries array and an entryValues "
+ "array which are both the same length");
}
restoreCheckedEntries();
OnMultiChoiceClickListener listener = new DialogInterface.OnMultiChoiceClickListener() {
public void onClick(DialogInterface dialog, int which, boolean val) {
entryChecked[which] = val;
}
};
builder.setMultiChoiceItems(entries, entryChecked, listener);
}
private CharSequence[] unpack(CharSequence val) {
if (val == null || "".equals(val)) {
return new CharSequence[0];
} else {
return ((String) val).split(separator);
}
}
public CharSequence[] getCheckedValues() {
return unpack(getValue());
}
private void restoreCheckedEntries() {
CharSequence[] entryValues = getEntryValues();
CharSequence[] vals = unpack(getValue());
if (vals != null) {
List<CharSequence> valuesList = Arrays.asList(vals);
for (int i = 0; i < entryValues.length; i++) {
CharSequence entry = entryValues[i];
entryChecked[i] = valuesList.contains(entry);
}
}
SharedPreferences prefs = getSharedPreferences();
try{
Map<String,?> keys = prefs.getAll();
for(Map.Entry<String,?> entry : keys.entrySet()){
}
} catch(NullPointerException e) {
Log.d("map values","Error: "+e);
}
}
@Override
protected void onDialogClosed(boolean positiveResult) {
List<CharSequence> values = new ArrayList<CharSequence>();
CharSequence[] entryValues = getEntryValues();
if (positiveResult && entryValues != null) {
for (int i = 0; i < entryValues.length; i++) {
if (entryChecked[i] == true) {
String val = (String) entryValues[i];
values.add(val);
}
}
String value = join(values, separator);
setSummary(prepareSummary(values));
setValueAndEvent(value);
}
}
private void setValueAndEvent(String value) {
if (callChangeListener(unpack(value))) {
setValue(value);
}
}
private CharSequence prepareSummary(List<CharSequence> joined) {
List<String> titles = new ArrayList<String>();
CharSequence[] entryTitle = getEntries();
CharSequence[] entryValues = getEntryValues();
int ix = 0;
for (CharSequence value : entryValues) {
if (joined.contains(value)) {
titles.add((String) entryTitle[ix]);
}
ix += 1;
}
return join(titles, ", ");
}
@Override
protected Object onGetDefaultValue(TypedArray typedArray, int index) {
return typedArray.getTextArray(index);
}
@Override
protected void onSetInitialValue(boolean restoreValue,
Object rawDefaultValue) {
String value = null;
CharSequence[] defaultValue;
if (rawDefaultValue == null) {
defaultValue = new CharSequence[0];
} else {
defaultValue = (CharSequence[]) rawDefaultValue;
}
List<CharSequence> joined = Arrays.asList(defaultValue);
String joinedDefaultValue = join(joined, separator);
if (restoreValue) {
value = getPersistedString(joinedDefaultValue);
} else {
value = joinedDefaultValue;
}
setSummary(prepareSummary(Arrays.asList(unpack(value))));
setValueAndEvent(value);
}
protected static String join(Iterable<?> iterable, String separator) {
Iterator<?> oIter;
if (iterable == null || (!(oIter = iterable.iterator()).hasNext()))
return "";
StringBuilder oBuilder = new StringBuilder(String.valueOf(oIter.next()));
while (oIter.hasNext())
oBuilder.append(separator).append(oIter.next());
return oBuilder.toString();
}
}