安卓BatteryManager.EXTRA_PLUGGED返回AC

Question

在Axon ZTE设备中，当我运行reciver

private String isConnected(Context context) {
    String sRet = "";
    try {
        final Intent mIntent = context.getApplicationContext().registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
        int plugged = mIntent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);

        if ((plugged == BatteryManager.BATTERY_PLUGGED_AC) && ac_connected == false) {
            ac_connected = true;
            sRet = "AC";
        } else if (plugged == BatteryManager.BATTERY_PLUGGED_USB) {
            ac_connected = true;
            sRet = "USB";
            //Toast.makeText(ctx, "connected to usb ", Toast.LENGTH_LONG).show();

        } else {
            sRet = "NOT CHARGING";
        }
    } catch (Exception e) {
        sRet = "";
    }

    return sRet;

}

它总是返回"AC“而不是USB，在其他设备上reciver运行良好。这怎么会发生呢？

Answer 1

我看到了类似的行为。可能是设备制造商/ ROM没有正确报告。没什么可做的，除非你喜欢深入查看设备日志，否则你也许可以在终端上做一些查询。