1 /* 2 * Copyright (C) 2006 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 17 package com.android.settings; 18 19 import android.app.Activity; 20 import android.content.BroadcastReceiver; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.content.IntentFilter; 24 import android.os.BatteryManager; 25 import android.os.Bundle; 26 import android.os.Handler; 27 import android.os.IPowerManager; 28 import android.os.Message; 29 import android.os.RemoteException; 30 import android.os.ServiceManager; 31 import android.os.SystemClock; 32 import android.text.format.DateUtils; 33 import android.widget.TextView; 34 35 import com.android.internal.app.IBatteryStats; 36 37 public class BatteryInfo extends Activity { 38 private TextView mStatus; 39 private TextView mPower; 40 private TextView mLevel; 41 private TextView mScale; 42 private TextView mHealth; 43 private TextView mVoltage; 44 private TextView mTemperature; 45 private TextView mTechnology; 46 private TextView mUptime; 47 private IBatteryStats mBatteryStats; 48 private IPowerManager mScreenStats; 49 50 private static final int EVENT_TICK = 1; 51 52 private Handler mHandler = new Handler() { 53 @Override 54 public void handleMessage(Message msg) { 55 switch (msg.what) { 56 case EVENT_TICK: 57 updateBatteryStats(); 58 sendEmptyMessageDelayed(EVENT_TICK, 1000); 59 60 break; 61 } 62 } 63 }; 64 65 /** 66 * Format a number of tenths-units as a decimal string without using a 67 * conversion to float. E.g. 347 -> "34.7" 68 */ 69 private final String tenthsToFixedString(int x) { 70 int tens = x / 10; 71 return Integer.toString(tens) + "." + (x - 10 * tens); 72 } 73 74 /** 75 *Listens for intent broadcasts 76 */ 77 private IntentFilter mIntentFilter; 78 79 private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() { 80 @Override 81 public void onReceive(Context context, Intent intent) { 82 String action = intent.getAction(); 83 if (action.equals(Intent.ACTION_BATTERY_CHANGED)) { 84 int plugType = intent.getIntExtra("plugged", 0); 85 86 mLevel.setText("" + intent.getIntExtra("level", 0)); 87 mScale.setText("" + intent.getIntExtra("scale", 0)); 88 mVoltage.setText("" + intent.getIntExtra("voltage", 0) + " " 89 + getString(R.string.battery_info_voltage_units)); 90 mTemperature.setText("" + tenthsToFixedString(intent.getIntExtra("temperature", 0)) 91 + getString(R.string.battery_info_temperature_units)); 92 mTechnology.setText("" + intent.getStringExtra("technology")); 93 94 int status = intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_UNKNOWN); 95 String statusString; 96 if (status == BatteryManager.BATTERY_STATUS_CHARGING) { 97 statusString = getString(R.string.battery_info_status_charging); 98 if (plugType > 0) { 99 statusString = statusString + " " + getString( 100 (plugType == BatteryManager.BATTERY_PLUGGED_AC) 101 ? R.string.battery_info_status_charging_ac 102 : R.string.battery_info_status_charging_usb); 103 } 104 } else if (status == BatteryManager.BATTERY_STATUS_DISCHARGING) { 105 statusString = getString(R.string.battery_info_status_discharging); 106 } else if (status == BatteryManager.BATTERY_STATUS_NOT_CHARGING) { 107 statusString = getString(R.string.battery_info_status_not_charging); 108 } else if (status == BatteryManager.BATTERY_STATUS_FULL) { 109 statusString = getString(R.string.battery_info_status_full); 110 } else { 111 statusString = getString(R.string.battery_info_status_unknown); 112 } 113 mStatus.setText(statusString); 114 115 switch (plugType) { 116 case 0: 117 mPower.setText(getString(R.string.battery_info_power_unplugged)); 118 break; 119 case BatteryManager.BATTERY_PLUGGED_AC: 120 mPower.setText(getString(R.string.battery_info_power_ac)); 121 break; 122 case BatteryManager.BATTERY_PLUGGED_USB: 123 mPower.setText(getString(R.string.battery_info_power_usb)); 124 break; 125 case (BatteryManager.BATTERY_PLUGGED_AC|BatteryManager.BATTERY_PLUGGED_USB): 126 mPower.setText(getString(R.string.battery_info_power_ac_usb)); 127 break; 128 default: 129 mPower.setText(getString(R.string.battery_info_power_unknown)); 130 break; 131 } 132 133 int health = intent.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN); 134 String healthString; 135 if (health == BatteryManager.BATTERY_HEALTH_GOOD) { 136 healthString = getString(R.string.battery_info_health_good); 137 } else if (health == BatteryManager.BATTERY_HEALTH_OVERHEAT) { 138 healthString = getString(R.string.battery_info_health_overheat); 139 } else if (health == BatteryManager.BATTERY_HEALTH_DEAD) { 140 healthString = getString(R.string.battery_info_health_dead); 141 } else if (health == BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE) { 142 healthString = getString(R.string.battery_info_health_over_voltage); 143 } else if (health == BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE) { 144 healthString = getString(R.string.battery_info_health_unspecified_failure); 145 } else { 146 healthString = getString(R.string.battery_info_health_unknown); 147 } 148 mHealth.setText(healthString); 149 } 150 } 151 }; 152 153 @Override 154 public void onCreate(Bundle icicle) { 155 super.onCreate(icicle); 156 157 setContentView(R.layout.battery_info); 158 159 // create the IntentFilter that will be used to listen 160 // to battery status broadcasts 161 mIntentFilter = new IntentFilter(); 162 mIntentFilter.addAction(Intent.ACTION_BATTERY_CHANGED); 163 } 164 165 @Override 166 public void onResume() { 167 super.onResume(); 168 169 mStatus = (TextView)findViewById(R.id.status); 170 mPower = (TextView)findViewById(R.id.power); 171 mLevel = (TextView)findViewById(R.id.level); 172 mScale = (TextView)findViewById(R.id.scale); 173 mHealth = (TextView)findViewById(R.id.health); 174 mTechnology = (TextView)findViewById(R.id.technology); 175 mVoltage = (TextView)findViewById(R.id.voltage); 176 mTemperature = (TextView)findViewById(R.id.temperature); 177 mUptime = (TextView) findViewById(R.id.uptime); 178 179 // Get awake time plugged in and on battery 180 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService("batteryinfo")); 181 mScreenStats = IPowerManager.Stub.asInterface(ServiceManager.getService(POWER_SERVICE)); 182 mHandler.sendEmptyMessageDelayed(EVENT_TICK, 1000); 183 184 registerReceiver(mIntentReceiver, mIntentFilter); 185 } 186 187 @Override 188 public void onPause() { 189 super.onPause(); 190 mHandler.removeMessages(EVENT_TICK); 191 192 // we are no longer on the screen stop the observers 193 unregisterReceiver(mIntentReceiver); 194 } 195 196 private void updateBatteryStats() { 197 long uptime = SystemClock.elapsedRealtime(); 198 mUptime.setText(DateUtils.formatElapsedTime(uptime / 1000)); 199 200 } 201 202 } 203
