您可以使用以下方法检查电池电量
private static int checkBatteryLevel(Context context) {
IntentFilter ifilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
Intent batteryStatus = context.registerReceiver(null, ifilter);
// Are we charging / charged?
int status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL;
// If the device is charging then set the state as charging and return.
if (isCharging)
return 100;
// Get the battery level.
int level = batteryStatus.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
int scale = batteryStatus.getIntExtra(BatteryManager.EXTRA_SCALE, -1);
// To get the battery level in %
int batteryLevel = (level * 100) / scale;
Log.e(Constants.TAG, "Battery Level: " + batteryLevel);
return batteryLevel;
}
您可以使用以下接收器来检测连接和断开连接
public class BatteryInformationReceiver extends BroadcastReceiver {
private static final String ACTION_POWER_CONNECTED = "android.intent.action.ACTION_POWER_CONNECTED";
private static final String ACTION_POWER_DISCONNECTED = "android.intent.action.ACTION_POWER_DISCONNECTED";
@Override
public void onReceive(Context context, Intent intent) {
String intentAction = intent.getAction();
if (intentAction.equalsIgnoreCase(ACTION_POWER_CONNECTED)) {
} else if (intentAction.equalsIgnoreCase(ACTION_POWER_DISCONNECTED)) {
}
}
}
在清单中
<receiver android:name="your.package.receivers.BatteryInformationReceiver" >
<intent-filter>
<action android:name="android.intent.action.ACTION_POWER_CONNECTED" />
<action android:name="android.intent.action.ACTION_POWER_DISCONNECTED" />
</intent-filter>
</receiver>
然后,在连接后,使用上述方法计算电池电量。断开连接后,计算电池电量。并从电池的时间和价值之间的差异。你可以计算任何你想要的。
希望对你有帮助