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 */ 16 package com.android.settings.fuelgauge; 17 18 import android.app.Activity; 19 import android.content.BroadcastReceiver; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.content.IntentFilter; 23 import android.os.BatteryStats; 24 import android.os.Bundle; 25 import android.os.Handler; 26 import android.os.Message; 27 import android.os.UserManager; 28 import android.support.annotation.VisibleForTesting; 29 import android.view.Menu; 30 import android.view.MenuInflater; 31 import android.view.MenuItem; 32 33 import com.android.internal.os.BatteryStatsHelper; 34 import com.android.settings.R; 35 import com.android.settings.SettingsPreferenceFragment; 36 37 /** 38 * Common base class for things that need to show the battery usage graph. 39 */ 40 public abstract class PowerUsageBase extends SettingsPreferenceFragment { 41 42 // +1 to allow ordering for PowerUsageSummary. 43 @VisibleForTesting 44 static final int MENU_STATS_REFRESH = Menu.FIRST + 1; 45 46 protected BatteryStatsHelper mStatsHelper; 47 protected UserManager mUm; 48 49 private String mBatteryLevel; 50 private String mBatteryStatus; 51 52 @Override onAttach(Activity activity)53 public void onAttach(Activity activity) { 54 super.onAttach(activity); 55 mUm = (UserManager) activity.getSystemService(Context.USER_SERVICE); 56 mStatsHelper = new BatteryStatsHelper(activity, true); 57 } 58 59 @Override onCreate(Bundle icicle)60 public void onCreate(Bundle icicle) { 61 super.onCreate(icicle); 62 mStatsHelper.create(icicle); 63 setHasOptionsMenu(true); 64 } 65 66 @Override onStart()67 public void onStart() { 68 super.onStart(); 69 mStatsHelper.clearStats(); 70 } 71 72 @Override onResume()73 public void onResume() { 74 super.onResume(); 75 BatteryStatsHelper.dropFile(getActivity(), BatteryHistoryPreference.BATTERY_HISTORY_FILE); 76 updateBatteryStatus(getActivity().registerReceiver(mBatteryInfoReceiver, 77 new IntentFilter(Intent.ACTION_BATTERY_CHANGED))); 78 if (mHandler.hasMessages(MSG_REFRESH_STATS)) { 79 mHandler.removeMessages(MSG_REFRESH_STATS); 80 mStatsHelper.clearStats(); 81 } 82 } 83 84 @Override onPause()85 public void onPause() { 86 super.onPause(); 87 getActivity().unregisterReceiver(mBatteryInfoReceiver); 88 } 89 90 @Override onStop()91 public void onStop() { 92 super.onStop(); 93 mHandler.removeMessages(MSG_REFRESH_STATS); 94 } 95 96 @Override onDestroy()97 public void onDestroy() { 98 super.onDestroy(); 99 if (getActivity().isChangingConfigurations()) { 100 mStatsHelper.storeState(); 101 } 102 } 103 104 @Override onCreateOptionsMenu(Menu menu, MenuInflater inflater)105 public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 106 super.onCreateOptionsMenu(menu, inflater); 107 MenuItem refresh = menu.add(0, MENU_STATS_REFRESH, 0, R.string.menu_stats_refresh) 108 .setIcon(com.android.internal.R.drawable.ic_menu_refresh) 109 .setAlphabeticShortcut('r'); 110 refresh.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM | 111 MenuItem.SHOW_AS_ACTION_WITH_TEXT); 112 } 113 onOptionsItemSelected(MenuItem item)114 public boolean onOptionsItemSelected(MenuItem item) { 115 switch (item.getItemId()) { 116 case MENU_STATS_REFRESH: 117 mStatsHelper.clearStats(); 118 refreshStats(); 119 mHandler.removeMessages(MSG_REFRESH_STATS); 120 return true; 121 } 122 return super.onOptionsItemSelected(item); 123 } 124 refreshStats()125 protected void refreshStats() { 126 mStatsHelper.refreshStats(BatteryStats.STATS_SINCE_CHARGED, mUm.getUserProfiles()); 127 } 128 updatePreference(BatteryHistoryPreference historyPref)129 protected void updatePreference(BatteryHistoryPreference historyPref) { 130 historyPref.setStats(mStatsHelper); 131 } 132 updateBatteryStatus(Intent intent)133 private boolean updateBatteryStatus(Intent intent) { 134 if (intent != null) { 135 String batteryLevel = com.android.settings.Utils.getBatteryPercentage(intent); 136 String batteryStatus = com.android.settings.Utils.getBatteryStatus(getResources(), 137 intent); 138 if (!batteryLevel.equals(mBatteryLevel) || !batteryStatus.equals(mBatteryStatus)) { 139 mBatteryLevel = batteryLevel; 140 mBatteryStatus = batteryStatus; 141 return true; 142 } 143 } 144 return false; 145 } 146 147 static final int MSG_REFRESH_STATS = 100; 148 149 private final Handler mHandler = new Handler() { 150 @Override 151 public void handleMessage(Message msg) { 152 switch (msg.what) { 153 case MSG_REFRESH_STATS: 154 mStatsHelper.clearStats(); 155 refreshStats(); 156 break; 157 } 158 } 159 }; 160 161 private BroadcastReceiver mBatteryInfoReceiver = new BroadcastReceiver() { 162 @Override 163 public void onReceive(Context context, Intent intent) { 164 String action = intent.getAction(); 165 if (Intent.ACTION_BATTERY_CHANGED.equals(action) 166 && updateBatteryStatus(intent)) { 167 if (!mHandler.hasMessages(MSG_REFRESH_STATS)) { 168 mHandler.sendEmptyMessageDelayed(MSG_REFRESH_STATS, 500); 169 } 170 } 171 } 172 }; 173 174 } 175