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(){    @Override    public 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));     }      @Override   protected void onResume() {    super.onResume();          registerReceiver(mBatInfoReceiver,             new IntentFilter(Intent.ACTION_BATTERY_CHANGED));     }       @Override     protected void onPause() {       super.onPause();       unregisterReceiver(mBatInfoReceiver);     }  }