Android监听电量的状态_android监听电池信息

Android电量相关的内容

监控手机电量的变化和充电状态

在BatteryManager中有一个粘性广播，不需要BroadcastReceiver作为接收器，在注册时将传入空

  IntentFilter filter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
  Intent intent = context.registerReceiver(null, filter);

从意向中就可以获取相关的电池的状态

当前电量

  int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
  int scale = batteryStatus.getIntExtra(BatteryManager.EXTRA_SCALE, -1); //电量的刻度

当前的充电状态

  int status = intent.getIntExtra(BatteryManager.EXTRA_SCALE, BatteryManager.BATTERY_STATUS_UNKNOWN);

充电状态值：

当前的充电方式

  int plug = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);

充电的方式

监听充电状态的变化

可以通过注册静态广播，监听 Intent.ACTION_POWER_CONNECTED Intent.ACTION_POWER_DISCONNECTED

  <receiver
    android:name=".PowerReceiver">
    <intent-filter>
        <action android:name="android.intent.action.ACTION_POWER_CONNECTED" />
        <action android:name="android.intent.action.ACTION_POWER_DISCONNECTED" />
    </intent-filter>
  </receiver>

  public class PowerReceiver extends BroadcastReceiver{
 
    private static final String TAG = PowerReceiver.class.getSimpleName();
 
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if(action.equals(Intent.ACTION_POWER_CONNECTED)){
            Log.d(TAG, "power connected");
 
        }else if(action.equals(Intent.ACTION_POWER_DISCONNECTED)){
            Log.e(TAG, "power disconnected");
 
        }
    }
  }

确定基座的状态变化和类型

注册粘性广播ACTION_DOCK_EVENT，来判断是插入底座，以及底座的类型

  IntentFilter ifilter = new IntentFilter(Intent.ACTION_DOCK_EVENT);
  Intent dockStatus = context.registerReceiver(null, ifilter);
 
  int dockState = dockStatus.getIntExtra(EXTRA_DOCK_STATE, -1); //底座类型
  boolean isDocked = dockState != Intent.EXTRA_DOCK_STATE_UNDOCKED; //是否插入了底座

底座的类型：