学步园

原文地址：http://blog.csdn.net/sharp2wing/archive/2010/08/20/5826493.aspx

这里介绍电池信息的取得.
    android.content.BroadcastReceiver类
    android.os.BatteryManager类

● 电池信息的取得，调用registerReceiver()方法。
         第1个参数，设置BroadcastReceiver实例
         第2个参数，设置追加了Intent.ACTION_BATTERY_CHANGED处理的IntentFilter实例。

● 在BroadcastReceiver的onReceive()事件，接收到的Intent.ACTION_BATTERY_CHANGED，包括下面的信息。
    “status”（int类型）…状态，定义值是BatteryManager.BATTERY_STATUS_XXX。
    “health”（int类型）…健康，定义值是BatteryManager.BATTERY_HEALTH_XXX。
    “present”（boolean类型）
    “level”（int类型）…电池剩余容量
    “scale”（int类型）…电池最大值。通常为100。
    “icon-small”（int类型）…图标ID。
    “plugged”（int类型）…连接的电源插座，定义值是BatteryManager.BATTERY_PLUGGED_XXX。
    “voltage”（int类型）…mV。
    “temperature”（int类型）…温度，0.1度单位。例如 表示197的时候，意思为19.7度。 
    “technology”（String类型）…电池类型，例如，Li-ion等等。

例程源码(Java)

001 package com.adakoda.batterytest; </p> <p>002 </p> <p>003 import android.app.Activity; </p> <p>004 import android.content.BroadcastReceiver; </p> <p>005 import android.content.Context; </p> <p>006 import android.content.Intent; </p> <p>007 import android.content.IntentFilter; </p> <p>008 import android.os.BatteryManager; </p> <p>009 import android.os.Bundle; </p> <p>010 import android.util.Log; </p> <p>011 </p> <p>012 public class BatteryTestActivity extends Activity { </p> <p>013 /** Called when the activity is first created. */ </p> <p>014 @Override </p> <p>015 public void onCreate(Bundle savedInstanceState) { </p> <p>016 super.onCreate(savedInstanceState); </p> <p>017 setContentView(R.layout.main); </p> <p>018 } </p> <p>019 </p> <p>020 @Override </p> <p>021 protected void onResume() { </p> <p>022 super.onResume(); </p> <p>023 </p> <p>024 IntentFilter filter = new IntentFilter(); </p> <p>025 </p> <p>026 filter.addAction(Intent.ACTION_BATTERY_CHANGED); </p> <p>027 registerReceiver(mBroadcastReceiver, filter); </p> <p>028 } </p> <p>029 </p> <p>030 @Override </p> <p>031 protected void onPause() { </p> <p>032 super.onPause(); </p> <p>033 </p> <p>034 unregisterReceiver(mBroadcastReceiver); </p> <p>035 } </p> <p>036 </p> <p>037 private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() { </p> <p>038 @Override </p> <p>039 public void onReceive(Context context, Intent intent) { </p> <p>040 String action = intent.getAction(); </p> <p>041 if (action.equals(Intent.ACTION_BATTERY_CHANGED)) { </p> <p>042 int status = intent.getIntExtra("status", 0); </p> <p>043 int health = intent.getIntExtra("health", 0); </p> <p>044 boolean present = intent.getBooleanExtra("present", false); </p> <p>045 int level = intent.getIntExtra("level", 0); </p> <p>046 int scale = intent.getIntExtra("scale", 0); </p> <p>047 int icon_small = intent.getIntExtra("icon-small", 0); </p> <p>048 int plugged = intent.getIntExtra("plugged", 0); </p> <p>049 int voltage = intent.getIntExtra("voltage", 0); </p> <p>050 int temperature = intent.getIntExtra("temperature", 0); </p> <p>051 String technology = intent.getStringExtra("technology"); </p> <p>052 </p> <p>053 String statusString = ""; </p> <p>054 </p> <p>055 switch (status) { </p> <p>056 case BatteryManager.BATTERY_STATUS_UNKNOWN: </p> <p>057 statusString = "unknown"; </p> <p>058 break; </p> <p>059 case BatteryManager.BATTERY_STATUS_CHARGING: </p> <p>060 statusString = "charging"; </p> <p>061 break; </p> <p>062 case BatteryManager.BATTERY_STATUS_DISCHARGING: </p> <p>063 statusString = "discharging"; </p> <p>064 break; </p> <p>065 case BatteryManager.BATTERY_STATUS_NOT_CHARGING: </p> <p>066 statusString = "not charging"; </p> <p>067 break; </p> <p>068 case BatteryManager.BATTERY_STATUS_FULL: </p> <p>069 statusString = "full"; </p> <p>070 break; </p> <p>071 } </p> <p>072 </p> <p>073 String healthString = ""; </p> <p>074 </p> <p>075 switch (health) { </p> <p>076 case BatteryManager.BATTERY_HEALTH_UNKNOWN: </p> <p>077 healthString = "unknown"; </p> <p>078 break; </p> <p>079 case BatteryManager.BATTERY_HEALTH_GOOD: </p> <p>080 healthString = "good"; </p> <p>081 break; </p> <p>082 case BatteryManager.BATTERY_HEALTH_OVERHEAT: </p> <p>083 healthString = "overheat"; </p> <p>084 break; </p> <p>085 case BatteryManager.BATTERY_HEALTH_DEAD: </p> <p>086 healthString = "dead"; </p> <p>087 break; </p> <p>088 case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE: </p> <p>089 healthString = "voltage"; </p> <p>090 break; </p> <p>091 case BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE: </p> <p>092 healthString = "unspecified failure"; </p> <p>093 break; </p> <p>094 } </p> <p>095 </p> <p>096 String acString = ""; </p> <p>097 </p> <p>098 switch (plugged) { </p> <p>099 case BatteryManager.BATTERY_PLUGGED_AC: </p> <p>100 acString = "plugged ac"; </p> <p>101 break; </p> <p>102 case BatteryManager.BATTERY_PLUGGED_USB: </p> <p>103 acString = "plugged usb"; </p> <p>104 break; </p> <p>105 } </p> <p>106 </p> <p>107 Log.v("status", statusString); </p> <p>108 Log.v("health", healthString); </p> <p>109 Log.v("present", String.valueOf(present)); </p> <p>110 Log.v("level", String.valueOf(level)); </p> <p>111 Log.v("scale", String.valueOf(scale)); </p> <p>112 Log.v("icon_small", String.valueOf(icon_small)); </p> <p>113 Log.v("plugged", acString); </p> <p>114 Log.v("voltage", String.valueOf(voltage)); </p> <p>115 Log.v("temperature", String.valueOf(temperature)); </p> <p>116 Log.v("technology", technology); </p> <p>117 } </p> <p>118 } </p> <p>119 }; </p> <p>120 } </p> <p>

参考资源
● BroadcastReceiver | Android Developers
● BatteryManager | Android Developers

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