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