如何识别与充电器端口的连接？

Question

我想检测一下，有没有像充电器或USB这样的东西连接到device.Is的充电器端口才能实现这一点呢？

我尝试了这个link .It工作时，充电器连接和disconnected.Is它工作在所有设备？

提前感谢

Answer 1

可以，您可以通过意向广播监控电池状态。

电池监视器示例：

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.BatteryManager;

public class ChargeMon extends BroadcastReceiver {
    private boolean mCharging;
    private boolean mUsb;
    private boolean mAC;

    public void start(Context c) {
        c.registerReceiver(this, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
    }

    public void stop(Context c) {
        c.unregisterReceiver(this);
    }

    public boolean isCharging() {
        return mCharging;
    }

    public boolean isUsb() {
        return mUsb;
    }

    public boolean isAC() {
        return mAC;
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        if(Intent.ACTION_BATTERY_CHANGED.equals(intent.getAction())){
            int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS,-1);

            mCharging = status == BatteryManager.BATTERY_STATUS_CHARGING ||
                       status == BatteryManager.BATTERY_STATUS_FULL;

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

            mUsb = chargePlug == BatteryManager.BATTERY_PLUGGED_USB;
            mAC = chargePlug == BatteryManager.BATTERY_PLUGGED_AC;
        }
    }
}