TunerActivity.java revision a9f128832f3fc16c2f435f2d0c999a5154200b4c 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package com.android.systemui.tuner;
17
18import android.app.Fragment;
19import android.app.FragmentTransaction;
20import android.os.Bundle;
21import android.support.v14.preference.PreferenceFragment;
22import android.support.v7.preference.Preference;
23import android.support.v7.preference.PreferenceScreen;
24import android.util.Log;
25
26import com.android.settingslib.drawer.SettingsDrawerActivity;
27import com.android.systemui.R;
28
29public class TunerActivity extends SettingsDrawerActivity implements
30        PreferenceFragment.OnPreferenceStartFragmentCallback,
31        PreferenceFragment.OnPreferenceStartScreenCallback {
32
33    private static final String TAG_TUNER = "tuner";
34
35    protected void onCreate(Bundle savedInstanceState) {
36        super.onCreate(savedInstanceState);
37
38        if (getFragmentManager().findFragmentByTag(TAG_TUNER) == null) {
39            getFragmentManager().beginTransaction().replace(R.id.content_frame, new TunerFragment(),
40                    TAG_TUNER).commit();
41        }
42    }
43
44    @Override
45    public boolean onPreferenceStartFragment(PreferenceFragment caller, Preference pref) {
46        try {
47            Class<?> cls = Class.forName(pref.getFragment());
48            Fragment fragment = (Fragment) cls.newInstance();
49            FragmentTransaction transaction = getFragmentManager().beginTransaction();
50            setTitle(pref.getTitle());
51            transaction.replace(R.id.content_frame, fragment);
52            transaction.addToBackStack("PreferenceFragment");
53            transaction.commit();
54            return true;
55        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException e) {
56            Log.d("TunerActivity", "Problem launching fragment", e);
57            return false;
58        }
59    }
60
61    @Override
62    public boolean onPreferenceStartScreen(PreferenceFragment caller, PreferenceScreen pref) {
63        FragmentTransaction transaction = getFragmentManager().beginTransaction();
64        SubSettingsFragment fragment = new SubSettingsFragment();
65        final Bundle b = new Bundle(1);
66        b.putString(PreferenceFragment.ARG_PREFERENCE_ROOT, pref.getKey());
67        fragment.setArguments(b);
68        fragment.setTargetFragment(caller, 0);
69        transaction.replace(R.id.content_frame, fragment);
70        transaction.addToBackStack("PreferenceFragment");
71        transaction.commit();
72        return true;
73    }
74
75    public static class SubSettingsFragment extends PreferenceFragment {
76        @Override
77        public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
78            setPreferenceScreen((PreferenceScreen) ((PreferenceFragment) getTargetFragment())
79                    .getPreferenceScreen().findPreference(rootKey));
80        }
81    }
82
83}
84