Android如何得到电量、温度、电压

com.LB里面主程序Battery代码：

[java] view
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package com.LB;

import android.app.Activity;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.os.BatteryManager;

import android.os.Bundle;

import android.widget.TextView;

public class Battery extends Activity

{

private int BatteryN; //目前电量

private int BatteryV; //电池电压

private double BatteryT; //电池温度

private String BatteryStatus; //电池状态

private String BatteryTemp; //电池使用情况

public TextView TV;

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

// 注册一个系统 BroadcastReceiver，作为访问电池计量之用这个不能直接在AndroidManifest.xml中注册

registerReceiver(mBatInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));

TV = (TextView)findViewById(R.id.TV);

}

/* 创建广播接收器 */

private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver()

{

public void onReceive(Context context, Intent intent)

{

String action = intent.getAction();

/*

* 如果捕捉到的action是ACTION_BATTERY_CHANGED， 就运行onBatteryInfoReceiver()

*/

if (Intent.ACTION_BATTERY_CHANGED.equals(action))

{

BatteryN = intent.getIntExtra("level", 0); //目前电量

BatteryV = intent.getIntExtra("voltage", 0); //电池电压

BatteryT = intent.getIntExtra("temperature", 0); //电池温度

switch (intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_UNKNOWN))

{

case BatteryManager.BATTERY_STATUS_CHARGING:

BatteryStatus = "充电状态";

break;

case BatteryManager.BATTERY_STATUS_DISCHARGING:

BatteryStatus = "放电状态";

break;

case BatteryManager.BATTERY_STATUS_NOT_CHARGING:

BatteryStatus = "未充电";

break;

case BatteryManager.BATTERY_STATUS_FULL:

BatteryStatus = "充满电";

break;

case BatteryManager.BATTERY_STATUS_UNKNOWN:

BatteryStatus = "未知道状态";

break;

}

switch (intent.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN))

{

case BatteryManager.BATTERY_HEALTH_UNKNOWN:

BatteryTemp = "未知错误";

break;

case BatteryManager.BATTERY_HEALTH_GOOD:

BatteryTemp = "状态良好";

break;

case BatteryManager.BATTERY_HEALTH_DEAD:

BatteryTemp = "电池没有电";

break;

case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:

BatteryTemp = "电池电压过高";

break;

case BatteryManager.BATTERY_HEALTH_OVERHEAT:

BatteryTemp = "电池过热";

break;

}

TV.setText("目前电量为" + BatteryN + "% --- " + BatteryStatus + "\n" + "电压为" + BatteryV + "mV --- " + BatteryTemp + "\n" + "温度为" + (BatteryT*0.1) + "℃");

}

}

};

}

layout的xml代码

[html] view
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<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

<TextView

android:id = "@+id/TV"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

/>

</LinearLayout>