267 lines
10 KiB
Java
267 lines
10 KiB
Java
package hpacademy.floorprinter;
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import android.annotation.TargetApi;
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import android.content.Context;
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import android.content.Intent;
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import android.content.res.Configuration;
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import android.media.Ringtone;
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import android.media.RingtoneManager;
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import android.net.Uri;
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import android.os.Build;
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import android.os.Bundle;
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import android.preference.ListPreference;
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import android.preference.Preference;
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import android.preference.PreferenceActivity;
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import android.support.v7.app.ActionBar;
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import android.preference.PreferenceFragment;
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import android.preference.PreferenceManager;
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import android.preference.RingtonePreference;
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import android.text.TextUtils;
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import android.view.MenuItem;
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import android.support.v4.app.NavUtils;
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import java.util.List;
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/**
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* A {@link PreferenceActivity} that presents a set of application settings. On
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* handset devices, settings are presented as a single list. On tablets,
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* settings are split by category, with category headers shown to the left of
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* the list of settings.
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* <p>
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* See <a href="http://developer.android.com/design/patterns/settings.html">
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* Android Design: Settings</a> for design guidelines and the <a
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* href="http://developer.android.com/guide/topics/ui/settings.html">Settings
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* API Guide</a> for more information on developing a Settings UI.
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*/
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public class SettingsActivity extends AppCompatPreferenceActivity {
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/**
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* A preference value change listener that updates the preference's summary
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* to reflect its new value.
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*/
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private static Preference.OnPreferenceChangeListener sBindPreferenceSummaryToValueListener = new Preference.OnPreferenceChangeListener() {
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@Override
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public boolean onPreferenceChange(Preference preference, Object value) {
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String stringValue = value.toString();
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if (preference instanceof ListPreference) {
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// For list preferences, look up the correct display value in
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// the preference's 'entries' list.
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ListPreference listPreference = (ListPreference) preference;
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int index = listPreference.findIndexOfValue(stringValue);
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// Set the summary to reflect the new value.
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preference.setSummary(
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index >= 0
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? listPreference.getEntries()[index]
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: null);
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} else if (preference instanceof RingtonePreference) {
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// For ringtone preferences, look up the correct display value
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// using RingtoneManager.
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if (TextUtils.isEmpty(stringValue)) {
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// Empty values correspond to 'silent' (no ringtone).
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preference.setSummary(R.string.pref_ringtone_silent);
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} else {
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Ringtone ringtone = RingtoneManager.getRingtone(
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preference.getContext(), Uri.parse(stringValue));
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if (ringtone == null) {
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// Clear the summary if there was a lookup error.
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preference.setSummary(null);
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} else {
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// Set the summary to reflect the new ringtone display
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// name.
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String name = ringtone.getTitle(preference.getContext());
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preference.setSummary(name);
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}
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}
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} else {
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// For all other preferences, set the summary to the value's
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// simple string representation.
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preference.setSummary(stringValue);
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}
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return true;
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}
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};
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/**
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* Helper method to determine if the device has an extra-large screen. For
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* example, 10" tablets are extra-large.
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*/
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private static boolean isXLargeTablet(Context context) {
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return (context.getResources().getConfiguration().screenLayout
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& Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_XLARGE;
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}
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/**
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* Binds a preference's summary to its value. More specifically, when the
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* preference's value is changed, its summary (line of text below the
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* preference title) is updated to reflect the value. The summary is also
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* immediately updated upon calling this method. The exact display format is
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* dependent on the type of preference.
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*
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* @see #sBindPreferenceSummaryToValueListener
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*/
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private static void bindPreferenceSummaryToValue(Preference preference) {
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// Set the listener to watch for value changes.
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preference.setOnPreferenceChangeListener(sBindPreferenceSummaryToValueListener);
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// Trigger the listener immediately with the preference's
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// current value.
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sBindPreferenceSummaryToValueListener.onPreferenceChange(preference,
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PreferenceManager
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.getDefaultSharedPreferences(preference.getContext())
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.getString(preference.getKey(), ""));
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}
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setupActionBar();
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}
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/**
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* Set up the {@link android.app.ActionBar}, if the API is available.
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*/
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private void setupActionBar() {
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ActionBar actionBar = getSupportActionBar();
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if (actionBar != null) {
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// Show the Up button in the action bar.
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actionBar.setDisplayHomeAsUpEnabled(true);
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}
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}
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@Override
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public boolean onMenuItemSelected(int featureId, MenuItem item) {
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int id = item.getItemId();
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if (id == android.R.id.home) {
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if (!super.onMenuItemSelected(featureId, item)) {
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NavUtils.navigateUpFromSameTask(this);
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}
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return true;
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}
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return super.onMenuItemSelected(featureId, item);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public boolean onIsMultiPane() {
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return isXLargeTablet(this);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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@TargetApi(Build.VERSION_CODES.HONEYCOMB)
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public void onBuildHeaders(List<Header> target) {
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loadHeadersFromResource(R.xml.pref_headers, target);
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}
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/**
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* This method stops fragment injection in malicious applications.
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* Make sure to deny any unknown fragments here.
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*/
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protected boolean isValidFragment(String fragmentName) {
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return PreferenceFragment.class.getName().equals(fragmentName)
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|| GeneralPreferenceFragment.class.getName().equals(fragmentName)
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|| DataSyncPreferenceFragment.class.getName().equals(fragmentName)
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|| NotificationPreferenceFragment.class.getName().equals(fragmentName);
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}
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/**
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* This fragment shows general preferences only. It is used when the
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* activity is showing a two-pane settings UI.
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*/
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@TargetApi(Build.VERSION_CODES.HONEYCOMB)
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public static class GeneralPreferenceFragment extends PreferenceFragment {
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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addPreferencesFromResource(R.xml.pref_general);
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setHasOptionsMenu(true);
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// Bind the summaries of EditText/List/Dialog/Ringtone preferences
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// to their values. When their values change, their summaries are
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// updated to reflect the new value, per the Android Design
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// guidelines.
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bindPreferenceSummaryToValue(findPreference("example_text"));
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bindPreferenceSummaryToValue(findPreference("example_list"));
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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int id = item.getItemId();
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if (id == android.R.id.home) {
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startActivity(new Intent(getActivity(), SettingsActivity.class));
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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}
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/**
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* This fragment shows notification preferences only. It is used when the
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* activity is showing a two-pane settings UI.
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*/
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@TargetApi(Build.VERSION_CODES.HONEYCOMB)
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public static class NotificationPreferenceFragment extends PreferenceFragment {
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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addPreferencesFromResource(R.xml.pref_notification);
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setHasOptionsMenu(true);
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// Bind the summaries of EditText/List/Dialog/Ringtone preferences
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// to their values. When their values change, their summaries are
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// updated to reflect the new value, per the Android Design
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// guidelines.
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bindPreferenceSummaryToValue(findPreference("notifications_new_message_ringtone"));
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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int id = item.getItemId();
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if (id == android.R.id.home) {
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startActivity(new Intent(getActivity(), SettingsActivity.class));
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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}
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/**
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* This fragment shows data and sync preferences only. It is used when the
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* activity is showing a two-pane settings UI.
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*/
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@TargetApi(Build.VERSION_CODES.HONEYCOMB)
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public static class DataSyncPreferenceFragment extends PreferenceFragment {
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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addPreferencesFromResource(R.xml.pref_data_sync);
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setHasOptionsMenu(true);
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// Bind the summaries of EditText/List/Dialog/Ringtone preferences
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// to their values. When their values change, their summaries are
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// updated to reflect the new value, per the Android Design
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// guidelines.
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bindPreferenceSummaryToValue(findPreference("sync_frequency"));
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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int id = item.getItemId();
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if (id == android.R.id.home) {
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startActivity(new Intent(getActivity(), SettingsActivity.class));
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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}
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}
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