Android电池信息的获取

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)

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001	package com.adakoda.batterytest;

002

003	import android.app.Activity;

004	import android.content.BroadcastReceiver;

005	import android.content.Context;

006	import android.content.Intent;

007	import android.content.IntentFilter;

008	import android.os.BatteryManager;

009	import android.os.Bundle;

010	import android.util.Log;

011

012	public class BatteryTestActivity extends Activity {

013	/** Called when the activity is first created. */

014

@Override

015	public void onCreate(Bundle savedInstanceState) {

016	super.onCreate(savedInstanceState);

017	setContentView(R.layout.main);

018

}

019

020

@Override

021	protected void onResume() {

022	super.onResume();

023

024	IntentFilter filter = new IntentFilter();

025

026	filter.addAction(Intent.ACTION_BATTERY_CHANGED);

027	registerReceiver(mBroadcastReceiver, filter);

028

}

029

030

@Override

031	protected void onPause() {

032	super.onPause();

033

034	unregisterReceiver(mBroadcastReceiver);

035

}

036

037	private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {

038

@Override

039	public void onReceive(Context context, Intent intent) {

040	String action = intent.getAction();

041	if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {

042	int status = intent.getIntExtra("status", 0);

043	int health = intent.getIntExtra("health", 0);

044	boolean present = intent.getBooleanExtra("present", false);

045	int level = intent.getIntExtra("level", 0);

046	int scale = intent.getIntExtra("scale", 0);

047	int icon_small = intent.getIntExtra("icon-small", 0);

048	int plugged = intent.getIntExtra("plugged", 0);

049	int voltage = intent.getIntExtra("voltage", 0);

050	int temperature = intent.getIntExtra("temperature", 0);

051	String technology = intent.getStringExtra("technology");

052

053	String statusString = "";

054

055	switch (status) {

056	case BatteryManager.BATTERY_STATUS_UNKNOWN:

057	statusString = "unknown";

058

break;

059	case BatteryManager.BATTERY_STATUS_CHARGING:

060	statusString = "charging";

061

break;

062	case BatteryManager.BATTERY_STATUS_DISCHARGING:

063	statusString = "discharging";

064

break;

065	case BatteryManager.BATTERY_STATUS_NOT_CHARGING:

066	statusString = "not charging";

067

break;

068	case BatteryManager.BATTERY_STATUS_FULL:

069	statusString = "full";

070

break;

071

}

072

073	String healthString = "";

074

075	switch (health) {

076	case BatteryManager.BATTERY_HEALTH_UNKNOWN:

077	healthString = "unknown";

078

break;

079	case BatteryManager.BATTERY_HEALTH_GOOD:

080	healthString = "good";

081

break;

082	case BatteryManager.BATTERY_HEALTH_OVERHEAT:

083	healthString = "overheat";

084

break;

085	case BatteryManager.BATTERY_HEALTH_DEAD:

086	healthString = "dead";

087

break;

088	case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:

089	healthString = "voltage";

090

break;

091	case BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE:

092	healthString = "unspecified failure";

093

break;

094

}

095

096	String acString = "";

097

098	switch (plugged) {

099	case BatteryManager.BATTERY_PLUGGED_AC:

100	acString = "plugged ac";

101

break;

102	case BatteryManager.BATTERY_PLUGGED_USB:

103	acString = "plugged usb";

104

break;

105

}

106

107	Log.v("status", statusString);

108	Log.v("health", healthString);

109	Log.v("present", String.valueOf(present));

110	Log.v("level", String.valueOf(level));

111	Log.v("scale", String.valueOf(scale));

112	Log.v("icon_small", String.valueOf(icon_small));

113	Log.v("plugged", acString);

114	Log.v("voltage", String.valueOf(voltage));

115	Log.v("temperature", String.valueOf(temperature));

116	Log.v("technology", technology);

117

}

118

}

119

};

120

}

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