package com.peterjosling.scroball.ui; import android.annotation.TargetApi; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.pm.ApplicationInfo; import android.content.pm.PackageManager; import android.content.res.Configuration; import android.os.Build; import android.os.Bundle; import android.preference.ListPreference; import android.preference.Preference; import android.preference.PreferenceActivity; import android.preference.PreferenceFragment; import android.preference.PreferenceScreen; import android.preference.SwitchPreference; import android.support.v7.app.ActionBar; import android.view.MenuItem; import com.peterjosling.scroball.R; import java.util.ArrayList; import java.util.List; import java.util.Set; /** * A {@link PreferenceActivity} that presents a set of application settings. On handset devices, * settings are presented as a single list. On tablets, settings are split by category, with * category headers shown to the left of the list of settings. * * <p>See <a href="http://developer.android.com/design/patterns/settings.html">Android Design: * Settings</a> for design guidelines and the <a * href="http://developer.android.com/guide/topics/ui/settings.html">Settings API Guide</a> for more * information on developing a Settings UI. */ public class SettingsActivity extends AppCompatPreferenceActivity { /** * A preference value change listener that updates the preference's summary to reflect its new * value. */ private static Preference.OnPreferenceChangeListener sBindPreferenceSummaryToValueListener = new Preference.OnPreferenceChangeListener() { @Override public boolean onPreferenceChange(Preference preference, Object value) { String stringValue = value.toString(); if (preference instanceof ListPreference) { // For list preferences, look up the correct display value in // the preference's 'entries' list. ListPreference listPreference = (ListPreference) preference; int index = listPreference.findIndexOfValue(stringValue); // Set the summary to reflect the new value. preference.setSummary(index >= 0 ? listPreference.getEntries()[index] : null); } else { // For all other preferences, set the summary to the value's // simple string representation. preference.setSummary(stringValue); } return true; } }; /** * Helper method to determine if the device has an extra-large screen. For example, 10" tablets * are extra-large. */ private static boolean isXLargeTablet(Context context) { return (context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_XLARGE; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setupActionBar(); } /** Set up the {@link android.app.ActionBar}, if the API is available. */ private void setupActionBar() { ActionBar actionBar = getSupportActionBar(); if (actionBar != null) { // Show the Up button in the action bar. actionBar.setDisplayHomeAsUpEnabled(true); } } @Override public boolean onOptionsItemSelected(MenuItem item) { if (item.getItemId() == android.R.id.home) { super.onBackPressed(); } return true; } /** {@inheritDoc} */ @Override public boolean onIsMultiPane() { return isXLargeTablet(this); } /** {@inheritDoc} */ @Override @TargetApi(Build.VERSION_CODES.HONEYCOMB) public void onBuildHeaders(List<Header> target) { loadHeadersFromResource(R.xml.pref_headers, target); } /** * This method stops fragment injection in malicious applications. Make sure to deny any unknown * fragments here. */ protected boolean isValidFragment(String fragmentName) { return PreferenceFragment.class.getName().equals(fragmentName) || PlayersPreferenceFragment.class.getName().equals(fragmentName) || NotificationPreferenceFragment.class.getName().equals(fragmentName); } /** * This fragment shows general preferences only. It is used when the activity is showing a * two-pane settings UI. */ @TargetApi(Build.VERSION_CODES.HONEYCOMB) public static class PlayersPreferenceFragment extends PreferenceFragment { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.pref_players); setHasOptionsMenu(true); SharedPreferences sharedPreferences = this.getPreferenceManager().getSharedPreferences(); Set<String> prefKeys = sharedPreferences.getAll().keySet(); List<String> playerPrefKeys = new ArrayList<>(); for (String key : prefKeys) { if (key.startsWith("player.")) { playerPrefKeys.add(key); } } PreferenceScreen root = getPreferenceScreen(); PackageManager packageManager = root.getContext().getApplicationContext().getPackageManager(); for (String key : playerPrefKeys) { Preference preference = new SwitchPreference(root.getContext()); String packageName = key.substring(7); ApplicationInfo applicationInfo; try { applicationInfo = packageManager.getApplicationInfo(packageName, 0); } catch (PackageManager.NameNotFoundException e) { SharedPreferences.Editor editor = sharedPreferences.edit(); editor.remove(key); editor.apply(); continue; } preference.setTitle(packageManager.getApplicationLabel(applicationInfo)); preference.setKey(key); preference.setIcon(packageManager.getApplicationIcon(applicationInfo)); root.addPreference(preference); } } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == android.R.id.home) { startActivity(new Intent(getActivity(), SettingsActivity.class)); return true; } return super.onOptionsItemSelected(item); } } /** * This fragment shows notification preferences only. It is used when the activity is showing a * two-pane settings UI. */ @TargetApi(Build.VERSION_CODES.HONEYCOMB) public static class NotificationPreferenceFragment extends PreferenceFragment { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.pref_notification); setHasOptionsMenu(true); } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == android.R.id.home) { startActivity(new Intent(getActivity(), SettingsActivity.class)); return true; } return super.onOptionsItemSelected(item); } } }