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.BatteryStats; 26 import android.os.Bundle; 27 import android.os.Handler; 28 import android.os.IPowerManager; 29 import android.os.Message; 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", -99 -> "-9.9" 68 */ 69 private final String tenthsToFixedString(int x) { 70 int tens = x / 10; 71 // use Math.abs to avoid "-9.-9" about -99 72 return Integer.toString(tens) + "." + Math.abs(x - 10 * tens); 73 } 74 75 /** 76 *Listens for intent broadcasts 77 */ 78 private IntentFilter mIntentFilter; 79 80 private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() { 81 @Override 82 public void onReceive(Context context, Intent intent) { 83 String action = intent.getAction(); 84 if (action.equals(Intent.ACTION_BATTERY_CHANGED)) { 85 int plugType = intent.getIntExtra("plugged", 0); 86 87 mLevel.setText("" + intent.getIntExtra("level", 0)); 88 mScale.setText("" + intent.getIntExtra("scale", 0)); 89 mVoltage.setText("" + intent.getIntExtra("voltage", 0) + " " 90 + getString(R.string.battery_info_voltage_units)); 91 mTemperature.setText("" + tenthsToFixedString(intent.getIntExtra("temperature", 0)) 92 + getString(R.string.battery_info_temperature_units)); 93 mTechnology.setText("" + intent.getStringExtra("technology")); 94 95 mStatus.setText(Utils.getBatteryStatus(getResources(), intent)); 96 97 switch (plugType) { 98 case 0: 99 mPower.setText(getString(R.string.battery_info_power_unplugged)); 100 break; 101 case BatteryManager.BATTERY_PLUGGED_AC: 102 mPower.setText(getString(R.string.battery_info_power_ac)); 103 break; 104 case BatteryManager.BATTERY_PLUGGED_USB: 105 mPower.setText(getString(R.string.battery_info_power_usb)); 106 break; 107 case BatteryManager.BATTERY_PLUGGED_WIRELESS: 108 mPower.setText(getString(R.string.battery_info_power_wireless)); 109 break; 110 case (BatteryManager.BATTERY_PLUGGED_AC|BatteryManager.BATTERY_PLUGGED_USB): 111 mPower.setText(getString(R.string.battery_info_power_ac_usb)); 112 break; 113 default: 114 mPower.setText(getString(R.string.battery_info_power_unknown)); 115 break; 116 } 117 118 int health = intent.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN); 119 String healthString; 120 if (health == BatteryManager.BATTERY_HEALTH_GOOD) { 121 healthString = getString(R.string.battery_info_health_good); 122 } else if (health == BatteryManager.BATTERY_HEALTH_OVERHEAT) { 123 healthString = getString(R.string.battery_info_health_overheat); 124 } else if (health == BatteryManager.BATTERY_HEALTH_DEAD) { 125 healthString = getString(R.string.battery_info_health_dead); 126 } else if (health == BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE) { 127 healthString = getString(R.string.battery_info_health_over_voltage); 128 } else if (health == BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE) { 129 healthString = getString(R.string.battery_info_health_unspecified_failure); 130 } else if (health == BatteryManager.BATTERY_HEALTH_COLD) { 131 healthString = getString(R.string.battery_info_health_cold); 132 } else { 133 healthString = getString(R.string.battery_info_health_unknown); 134 } 135 mHealth.setText(healthString); 136 } 137 } 138 }; 139 140 @Override 141 public void onCreate(Bundle icicle) { 142 super.onCreate(icicle); 143 144 setContentView(R.layout.battery_info); 145 146 // create the IntentFilter that will be used to listen 147 // to battery status broadcasts 148 mIntentFilter = new IntentFilter(); 149 mIntentFilter.addAction(Intent.ACTION_BATTERY_CHANGED); 150 } 151 152 @Override 153 public void onResume() { 154 super.onResume(); 155 156 mStatus = (TextView)findViewById(R.id.status); 157 mPower = (TextView)findViewById(R.id.power); 158 mLevel = (TextView)findViewById(R.id.level); 159 mScale = (TextView)findViewById(R.id.scale); 160 mHealth = (TextView)findViewById(R.id.health); 161 mTechnology = (TextView)findViewById(R.id.technology); 162 mVoltage = (TextView)findViewById(R.id.voltage); 163 mTemperature = (TextView)findViewById(R.id.temperature); 164 mUptime = (TextView) findViewById(R.id.uptime); 165 166 // Get awake time plugged in and on battery 167 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 168 BatteryStats.SERVICE_NAME)); 169 mScreenStats = IPowerManager.Stub.asInterface(ServiceManager.getService(POWER_SERVICE)); 170 mHandler.sendEmptyMessageDelayed(EVENT_TICK, 1000); 171 172 registerReceiver(mIntentReceiver, mIntentFilter); 173 } 174 175 @Override 176 public void onPause() { 177 super.onPause(); 178 mHandler.removeMessages(EVENT_TICK); 179 180 // we are no longer on the screen stop the observers 181 unregisterReceiver(mIntentReceiver); 182 } 183 184 private void updateBatteryStats() { 185 long uptime = SystemClock.elapsedRealtime(); 186 mUptime.setText(DateUtils.formatElapsedTime(uptime / 1000)); 187 } 188 189 } 190
