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SettingsExampleFragment.java
/* * Copyright (C) 2015 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software distributed under the License * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express * or implied. See the License for the specific language governing permissions and limitations under * the License. */ package android.support.v17.leanback.supportleanbackshowcase.app.settings; import android.app.Fragment; import android.content.Context; import android.os.Bundle; import android.support.v14.preference.PreferenceFragment; import android.support.v17.leanback.supportleanbackshowcase.R; import android.support.v17.preference.LeanbackPreferenceFragment; import android.support.v17.preference.LeanbackSettingsFragment; import android.support.v7.preference.DialogPreference; import android.support.v7.preference.ListPreference; import android.support.v7.preference.Preference; import android.support.v7.preference.PreferenceScreen; import android.widget.Toast; import java.util.Arrays; import java.util.Stack; public class SettingsExampleFragment extends LeanbackSettingsFragment implements DialogPreference.TargetFragment { private final Stack
fragments = new Stack
(); @Override public void onPreferenceStartInitialScreen() { startPreferenceFragment(buildPreferenceFragment(R.xml.prefs, null)); } @Override public boolean onPreferenceStartFragment(PreferenceFragment preferenceFragment, Preference preference) { return false; } @Override public boolean onPreferenceStartScreen(PreferenceFragment preferenceFragment, PreferenceScreen preferenceScreen) { PreferenceFragment frag = buildPreferenceFragment(R.xml.prefs, preferenceScreen.getKey()); startPreferenceFragment(frag); return true; } @Override public Preference findPreference(CharSequence prefKey) { return ((PreferenceFragment) fragments.peek()).findPreference(prefKey); } private PreferenceFragment buildPreferenceFragment(int preferenceResId, String root) { PreferenceFragment fragment = new PrefFragment(); Bundle args = new Bundle(); args.putInt("preferenceResource", preferenceResId); args.putString("root", root); fragment.setArguments(args); return fragment; } private class PrefFragment extends LeanbackPreferenceFragment { @Override public void onCreatePreferences(Bundle bundle, String s) { String root = getArguments().getString("root", null); int prefResId = getArguments().getInt("preferenceResource"); if (root == null) { addPreferencesFromResource(prefResId); } else { setPreferencesFromResource(prefResId, root); } } @Override public boolean onPreferenceTreeClick(Preference preference) { final String[] keys = {"prefs_wifi_connect_wps", "prefs_date", "prefs_time", "prefs_date_time_use_timezone", "app_banner_sample_app", "pref_force_stop", "pref_uninstall", "pref_more_info"}; if (Arrays.asList(keys).contains(preference.getKey())) { Toast.makeText(getActivity(), "Implement your own action handler.", Toast.LENGTH_SHORT).show(); return true; } return super.onPreferenceTreeClick(preference); } @Override public void onAttach(Context context) { fragments.push(this); super.onAttach(context); } @Override public void onDetach() { fragments.pop(); super.onDetach(); } } }