In Android ist kein TimePreference integriert. Es ist jedoch ziemlich einfach, eigene zu erstellen. Hier ist eine, die ich gemacht habe :
import android.content.Context;
import android.content.res.TypedArray;
import android.preference.DialogPreference;
import android.util.AttributeSet;
import android.view.View;
import android.widget.TimePicker;
public class TimePreference extends DialogPreference {
private int lastHour=0;
private int lastMinute=0;
private TimePicker picker=null;
public static int getHour(String time) {
String[] pieces=time.split(":");
return(Integer.parseInt(pieces[0]));
}
public static int getMinute(String time) {
String[] pieces=time.split(":");
return(Integer.parseInt(pieces[1]));
}
public TimePreference(Context ctxt, AttributeSet attrs) {
super(ctxt, attrs);
setPositiveButtonText("Set");
setNegativeButtonText("Cancel");
}
@Override
protected View onCreateDialogView() {
picker=new TimePicker(getContext());
return(picker);
}
@Override
protected void onBindDialogView(View v) {
super.onBindDialogView(v);
picker.setCurrentHour(lastHour);
picker.setCurrentMinute(lastMinute);
}
@Override
protected void onDialogClosed(boolean positiveResult) {
super.onDialogClosed(positiveResult);
if (positiveResult) {
lastHour=picker.getCurrentHour();
lastMinute=picker.getCurrentMinute();
String time=String.valueOf(lastHour)+":"+String.valueOf(lastMinute);
if (callChangeListener(time)) {
persistString(time);
}
}
}
@Override
protected Object onGetDefaultValue(TypedArray a, int index) {
return(a.getString(index));
}
@Override
protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
String time=null;
if (restoreValue) {
if (defaultValue==null) {
time=getPersistedString("00:00");
}
else {
time=getPersistedString(defaultValue.toString());
}
}
else {
time=defaultValue.toString();
}
lastHour=getHour(time);
lastMinute=getMinute(time);
}
}
getCurrentHour()
sollte einen Wert von 0 bis 23 zurückgeben.HH:MM
Format. Eine andere Antwort in dieser Frage hat eine alternative Version, die die Zeit so lange speichert.TimePreference
. Erstellen Sie einfach eineDialogFragment
um dieTimePickerDialog
oder verwenden Sie die ältere Funktion für verwaltete Dialoge, wenn Sie keine Fragmente verwenden. Hier ist eineDialogFragment
Beispiel-App (obwohl eineAlertDialog
anstelle einer erstelltTimePickerDialog
): github.com/commonsguy/cw-omnibus/tree/master/Dialogs/…Ich habe den Code von der ersten Antwort an geändert:
Aktualisierter Code:
public class TimePreference extends DialogPreference { private Calendar calendar; private TimePicker picker = null; public TimePreference(Context ctxt) { this(ctxt, null); } public TimePreference(Context ctxt, AttributeSet attrs) { this(ctxt, attrs, android.R.attr.dialogPreferenceStyle); } public TimePreference(Context ctxt, AttributeSet attrs, int defStyle) { super(ctxt, attrs, defStyle); setPositiveButtonText(R.string.set); setNegativeButtonText(R.string.cancel); calendar = new GregorianCalendar(); } @Override protected View onCreateDialogView() { picker = new TimePicker(getContext()); return (picker); } @Override protected void onBindDialogView(View v) { super.onBindDialogView(v); picker.setCurrentHour(calendar.get(Calendar.HOUR_OF_DAY)); picker.setCurrentMinute(calendar.get(Calendar.MINUTE)); } @Override protected void onDialogClosed(boolean positiveResult) { super.onDialogClosed(positiveResult); if (positiveResult) { calendar.set(Calendar.HOUR_OF_DAY, picker.getCurrentHour()); calendar.set(Calendar.MINUTE, picker.getCurrentMinute()); setSummary(getSummary()); if (callChangeListener(calendar.getTimeInMillis())) { persistLong(calendar.getTimeInMillis()); notifyChanged(); } } } @Override protected Object onGetDefaultValue(TypedArray a, int index) { return (a.getString(index)); } @Override protected void onSetInitialValue(boolean restoreValue, Object defaultValue) { if (restoreValue) { if (defaultValue == null) { calendar.setTimeInMillis(getPersistedLong(System.currentTimeMillis())); } else { calendar.setTimeInMillis(Long.parseLong(getPersistedString((String) defaultValue))); } } else { if (defaultValue == null) { calendar.setTimeInMillis(System.currentTimeMillis()); } else { calendar.setTimeInMillis(Long.parseLong((String) defaultValue)); } } setSummary(getSummary()); } @Override public CharSequence getSummary() { if (calendar == null) { return null; } return DateFormat.getTimeFormat(getContext()).format(new Date(calendar.getTimeInMillis())); } }
quelle
restoreValue == false
dann müssen SiepersistLong(calendar.getTimeInMillis());
als letzte Zeile im Codeblock aufrufen . AndernfallsPreferenceManager.setDefaultValues(...)
funktioniert es nicht wie erwartet undPreferenceManager.getDefaultSharedPreferences(this).getLong(...)
gibt den Standardwert nur zurück, wenn er tatsächlich in den Einstellungen ausgewählt wurde.0
. Änderung:this(context, attrs, android.R.attr.dialogPreferenceStyle);
Für diejenigen, bei denen die Implementierung einer benutzerdefinierten Voreinstellung nicht so offensichtlich ist (wie bei mir nicht), müssen Sie diese zu Ihrer
preferences.xml
oder wie auch immer Sie sie nennen , hinzufügen .Sie werden am Ende so etwas haben:
<?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" > <EditTextPreference android:key="editTextPref_Key" android:title="@string/editTextPref_title"/> <com.example.myapp.TimePreference android:key="timePrefA_Key" android:title="@string/timePrefA_title"/> <com.example.myapp.TimePreference android:key="timePrefB_Key" android:title="@string/timePrefB_title"/> </PreferenceScreen>
Angenommen, Sie haben die TimePreference zu Ihrem eigenen Root-Paket hinzugefügt:
(
src/com/example/myapp/TimePreference.java
)quelle
hora_inicio = Integer.parseInt(sharedPrefs.getString("hora_inicio", "0"));
aber ich bin mir nicht sicher, ob es so heißen soll?SharedPreferences prefs; prefs = PreferenceManager.getDefaultSharedPreferences(this); String[] pieces = refs.getString("hora_inicio","08:00").split(":");
Das zweite Argument ist der Standardwert, wenn es nicht festgelegt ist.07-16 15:33:41.689: W/ResourceType(9228): Failure getting entry for 0x010802c9 (t=7 e=713) in package 0 (error -75)
Für
Preferences Support Library
unterschiedlichen Code wird benötigt. Es erfordert zwei benutzerdefinierte KlassenTimePreference
undTimePreferenceDialogFragmentCompat
sowie das Überschreiben deronDisplayPreferenceDialog
Methode in derPreferenceFragmentCompat
Erweiterungsklasse.TimePreference.java
package com.test; import android.content.Context; import android.content.res.TypedArray; import android.support.v7.preference.DialogPreference; import android.util.AttributeSet; public class TimePreference extends DialogPreference { public int hour = 0; public int minute = 0; public static int parseHour(String value) { try { String[] time = value.split(":"); return (Integer.parseInt(time[0])); } catch (Exception e) { return 0; } } public static int parseMinute(String value) { try { String[] time = value.split(":"); return (Integer.parseInt(time[1])); } catch (Exception e) { return 0; } } public static String timeToString(int h, int m) { return String.format("%02d", h) + ":" + String.format("%02d", m); } public TimePreference(Context context, AttributeSet attrs) { super(context, attrs); } @Override protected Object onGetDefaultValue(TypedArray a, int index) { return a.getString(index); } @Override protected void onSetInitialValue(boolean restoreValue, Object defaultValue) { String value; if (restoreValue) { if (defaultValue == null) value = getPersistedString("00:00"); else value = getPersistedString(defaultValue.toString()); } else { value = defaultValue.toString(); } hour = parseHour(value); minute = parseMinute(value); } public void persistStringValue(String value) { persistString(value); } }
TimePreferenceDialogFragmentCompat.java
package com.test; import android.content.Context; import android.support.v7.preference.DialogPreference; import android.support.v7.preference.Preference; import android.support.v7.preference.PreferenceDialogFragmentCompat; import android.view.View; import android.widget.TimePicker; public class TimePreferenceDialogFragmentCompat extends PreferenceDialogFragmentCompat implements DialogPreference.TargetFragment { TimePicker timePicker = null; @Override protected View onCreateDialogView(Context context) { timePicker = new TimePicker(context); return (timePicker); } @Override protected void onBindDialogView(View v) { super.onBindDialogView(v); timePicker.setIs24HourView(true); TimePreference pref = (TimePreference) getPreference(); timePicker.setCurrentHour(pref.hour); timePicker.setCurrentMinute(pref.minute); } @Override public void onDialogClosed(boolean positiveResult) { if (positiveResult) { TimePreference pref = (TimePreference) getPreference(); pref.hour = timePicker.getCurrentHour(); pref.minute = timePicker.getCurrentMinute(); String value = TimePreference.timeToString(pref.hour, pref.minute); if (pref.callChangeListener(value)) pref.persistStringValue(value); } } @Override public Preference findPreference(CharSequence charSequence) { return getPreference(); } }
Erforderliche Änderungen in der
PreferenceFragmentCompat
Erweiterungsklassepublic static class PreferencesFragment extends PreferenceFragmentCompat { .... @Override public void onDisplayPreferenceDialog(Preference preference) { DialogFragment dialogFragment = null; if (preference instanceof TimePreference) { dialogFragment = new TimePreferenceDialogFragmentCompat(); Bundle bundle = new Bundle(1); bundle.putString("key", preference.getKey()); dialogFragment.setArguments(bundle); } if (dialogFragment != null) { dialogFragment.setTargetFragment(this, 0); dialogFragment.show(this.getFragmentManager(), "android.support.v7.preference.PreferenceFragment.DIALOG"); } else { super.onDisplayPreferenceDialog(preference); } } }
Mit dem obigen Code kann die Zeiteinstellung in einer solchen XML-Einstellungsdatei verwendet werden
<com.test.TimePreference android:key="some_time" android:title="Set some time" android:defaultValue="12:00" android:summary="Set some time"/>
quelle
PreferenceManager
der Support-Bibliothek, um Standardwerte festzulegen, z. B. inPreferenceManager.SetDefaultValues(context, resId, readAgain)
Die Lösung von CommonsWare weist einige Probleme auf, die ich behoben habe:
Hier ist mein Code, viel Spaß.
public class TimePreference extends DialogPreference { private int lastHour=0; private int lastMinute=0; private TimePicker picker=null; public static int getHour(String time) { String[] pieces=time.split(":"); return(Integer.parseInt(pieces[0])); } public static int getMinute(String time) { String[] pieces=time.split(":"); return(Integer.parseInt(pieces[1])); } public TimePreference(Context ctxt, AttributeSet attrs) { super(ctxt, attrs); setPositiveButtonText("Set"); setNegativeButtonText("Cancel"); } @Override protected View onCreateDialogView() { picker=new TimePicker(getContext()); return(picker); } @Override protected void onBindDialogView(View v) { super.onBindDialogView(v); picker.setCurrentHour(lastHour); picker.setCurrentMinute(lastMinute); } @Override protected void onDialogClosed(boolean positiveResult) { super.onDialogClosed(positiveResult); if (positiveResult) { lastHour=picker.getCurrentHour(); lastMinute=picker.getCurrentMinute(); setSummary(getSummary()); String lastMinuteString = String.valueOf(lastMinute); String time = String.valueOf(lastHour) + ":" + (lastMinuteString.length() == 1 ? "0" + lastMinuteString : lastMinuteString); if (callChangeListener(time)) { persistString(time); } } } @Override protected Object onGetDefaultValue(TypedArray a, int index) { return(a.getString(index)); } @Override protected void onSetInitialValue(boolean restoreValue, Object defaultValue) { String time; String defaultValueStr = (defaultValue != null) ? defaultValue.toString() : "00:00"; if (restoreValue) time = getPersistedString(defaultValueStr); else { time = defaultValueStr; if (shouldPersist()) persistString(defaultValueStr); } lastHour=getHour(time); lastMinute=getMinute(time); setSummary(getSummary()); } @Override public CharSequence getSummary() { Calendar cal = Calendar.getInstance(); cal.set(Calendar.HOUR_OF_DAY, lastHour); cal.set(Calendar.MINUTE, lastMinute); DateFormat sdf = SimpleDateFormat.getTimeInstance(SimpleDateFormat.SHORT); return sdf.format(cal.getTime()); } }
quelle
füge dies für die Zusammenfassung hinzu:
@Override public CharSequence getSummary() { Calendar cal = Calendar.getInstance(); cal.set(Calendar.YEAR, Calendar.MONTH, Calendar.DAY_OF_MONTH, lastHour, lastMinute); return DateFormat.getTimeFormat(getContext()).format(new Date(cal.getTimeInMillis())); }
und hinzufügen
setSummary(getSummary());
bis zum Ende von onSetInitialValue und onDialogClosed .
quelle
Ich habe die CommonsWare-Antwort geändert, um die JodaTime-Bibliothek zu verwenden:
import android.content.Context; import android.content.res.TypedArray; import android.preference.DialogPreference; import android.support.annotation.NonNull; import android.util.AttributeSet; import android.view.View; import android.widget.TimePicker; import org.joda.time.LocalTime; public class TimePreference extends DialogPreference { private int lastHour; private int lastMinute; private TimePicker picker; public TimePreference(Context context, AttributeSet attrs) { super(context, attrs); setPositiveButtonText("Set"); setNegativeButtonText("Cancel"); } @Override protected View onCreateDialogView() { picker = new TimePicker(getContext()); return(picker); } @Override protected void onBindDialogView(@NonNull View v) { super.onBindDialogView(v); picker.setCurrentHour(lastHour); picker.setCurrentMinute(lastMinute); } @Override protected void onDialogClosed(boolean positiveResult) { super.onDialogClosed(positiveResult); if (positiveResult) { lastHour = picker.getCurrentHour(); lastMinute = picker.getCurrentMinute(); LocalTime localTime = new LocalTime(lastHour, lastMinute); String time = localTime.toString(); if (callChangeListener(time)) { persistString(time); } } } @Override protected Object onGetDefaultValue(TypedArray a, int index) { return(a.getString(index)); } @Override protected void onSetInitialValue(boolean restoreValue, Object defaultValue) { LocalTime time; if (restoreValue) { if (defaultValue == null) { time = LocalTime.parse(getPersistedString("08:00:00.000")); } else { time = LocalTime.parse(getPersistedString(defaultValue.toString())); } } else { time = LocalTime.parse(defaultValue.toString()); } lastHour = time.getHourOfDay(); lastMinute = time.getMinuteOfHour(); } }
Außerdem müssen Sie eine benutzerdefinierte Einstellung hinzufügen, wie Sikora sagte.
<?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" > <EditTextPreference android:key="editTextPref_Key" android:title="@string/editTextPref_title"/> <com.example.myapp.TimePreference android:key="timePrefA_Key" android:title="@string/timePrefA_title"/> <com.example.myapp.TimePreference android:key="timePrefB_Key" android:title="@string/timePrefB_title"/> </PreferenceScreen>
quelle
Bei Android 6 sind "aktuelle Stunde" und "aktuelle Minute" veraltet. Verwenden Sie diese Option, um die Marshmallow-Kompatibilität sicherzustellen:
import android.content.Context; import android.content.res.TypedArray; import android.os.Build; import android.preference.DialogPreference; import android.util.AttributeSet; import android.view.View; import android.widget.TimePicker; public class TimePreference extends DialogPreference { private int lastHour; private int lastMinute; private TimePicker picker; public TimePreference(Context ctx, AttributeSet attrs) { super(ctx, attrs); setPositiveButtonText(ctx.getString(android.R.string.ok)); setNegativeButtonText(ctx.getString(android.R.string.cancel)); } @Override protected View onCreateDialogView() { picker = new TimePicker(getContext()); picker.setIs24HourView(true); return picker; } @SuppressWarnings("deprecation") @Override protected void onBindDialogView(View v) { super.onBindDialogView(v); if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) { picker.setCurrentHour(lastHour); picker.setCurrentMinute(lastMinute); } else { picker.setHour(lastHour); picker.setMinute(lastMinute); } } @SuppressWarnings("deprecation") @Override protected void onDialogClosed(boolean positiveResult) { super.onDialogClosed(positiveResult); if (positiveResult) { if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) { lastHour = picker.getCurrentHour(); lastMinute = picker.getCurrentMinute(); } else { lastHour = picker.getHour(); lastMinute = picker.getMinute(); } String time = String.valueOf(lastHour) + ":" + String.valueOf(lastMinute); if (callChangeListener(time)) { persistString(time); } } } @Override protected Object onGetDefaultValue(TypedArray a, int index) { return a.getString(index); } @Override protected void onSetInitialValue(boolean restoreValue, Object defaultValue) { String time; if (restoreValue) { if (defaultValue == null) { time = getPersistedString("00:00"); } else { time = getPersistedString(defaultValue.toString()); } } else { time = defaultValue.toString(); } lastHour = getHour(time); lastMinute = getMinute(time); } public static int getHour(String time) { String[] pieces = time.split(":"); return Integer.parseInt(pieces[0]); } public static int getMinute(String time) { String[] pieces = time.split(":"); return Integer.parseInt(pieces[1]); } }
quelle
Wie LEO87 habe ich ClassCastException's gesehen. Das Problem war auf veraltete, persistente Daten eines früheren gleichnamigen Steuerelements zurückzuführen. Mögliche Lösungen sind das Löschen der App-Daten, die Verwendung eines anderen Namens (Schlüssels) oder die Ausnahme wie folgt, wenn Sie denselben Schlüsselnamen verwenden müssen:
@Override protected void onSetInitialValue(boolean restoreValue, Object defaultValue) { if (restoreValue) { long persistedValue; try { persistedValue = getPersistedLong(System.currentTimeMillis()); } catch (Exception e) { //Stale persisted data may be the wrong type persistedValue = System.currentTimeMillis(); } calendar.setTimeInMillis(persistedValue); } else if (defaultValue != null) { calendar.setTimeInMillis(Long.parseLong((String) defaultValue)); } else { //!restoreValue, defaultValue == null calendar.setTimeInMillis(System.currentTimeMillis()); } setSummary(getSummary()); }
quelle