Android 获取电池基本信息代码

读取电池信息的android代码：
package org.example.itester;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.graphics.Color;import android.os.BatteryManager;import android.os.Bundle;import android.widget.TextView;public class batteryinfo extends ITester{private TextView batTxt;private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver(){@Overridepublic void onReceive(Context arg0, Intent intent) {String action = intent.getAction();if (Intent.ACTION_BATTERY_CHANGED.equals(action)){int status = intent.getIntExtra("status", 0);int health = intent.getIntExtra("health", 1);boolean present = intent.getBooleanExtra("present", false);int level = intent.getIntExtra("level", 0);int scale = intent.getIntExtra("scale", 0);int plugged = intent.getIntExtra("plugged", 0);int voltage = intent.getIntExtra("voltage", 0);int temperature = intent.getIntExtra("temperature", 0);String technology = intent.getStringExtra("technology");      String statusString = "unknown";          switch (status) {case BatteryManager.BATTERY_STATUS_UNKNOWN:statusString = "unknown";break;case BatteryManager.BATTERY_STATUS_CHARGING:statusString = "charging";break;case BatteryManager.BATTERY_STATUS_DISCHARGING:statusString = "discharging";break;case BatteryManager.BATTERY_STATUS_NOT_CHARGING:statusString = "not charging";break;case BatteryManager.BATTERY_STATUS_FULL:statusString = "full";break;}        String healthString = "unknown";        switch (health) {case BatteryManager.BATTERY_HEALTH_UNKNOWN:healthString = "unknown";break;case BatteryManager.BATTERY_HEALTH_GOOD:healthString = "good";break;case BatteryManager.BATTERY_HEALTH_OVERHEAT:healthString = "overheat";break;case BatteryManager.BATTERY_HEALTH_DEAD:healthString = "dead";break;case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:healthString = "voltage";break;case BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE:healthString = "unspecified failure";break;}        String acString = "Unknown";        switch (plugged) {case BatteryManager.BATTERY_PLUGGED_AC:acString = "plugged ac";break;case BatteryManager.BATTERY_PLUGGED_USB:acString = "plugged usb";break;}batTxt.setTextColor(Color.BLUE);batTxt.setTextSize(38);batTxt.setText(  "Status: " + statusString +  "\nLevel: " + String.valueOf(level) + "%" +      "\nHealth: " + healthString +          "\nPresent: " + String.valueOf(present)+          "\nScale: " + String.valueOf(scale)+          "\nPlugged: " + acString +          "\nVoltage: " + String.valueOf(voltage) +          "\nTemperature: " + String.valueOf(temperature) +          "\nTechnology: " + technology);       }}};@Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.batteryinfo);        batTxt = (TextView)findViewById(R.id.battery_info);        registerReceiver(mBatInfoReceiver,         new IntentFilter(Intent.ACTION_BATTERY_CHANGED));}@Overrideprotected void onResume() {super.onResume();        registerReceiver(mBatInfoReceiver,         new IntentFilter(Intent.ACTION_BATTERY_CHANGED));  }  @Override  protected void onPause() {    super.onPause();    unregisterReceiver(mBatInfoReceiver);  }}
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