Android的USB连接充电信号 [英] android USB connection charging signals

问题描述

我如何检查USB插座插入或不（与AC / USB充电）？ （android版2.1 / 2.2）

How can I check the USB socket is plugged or not (Charging with AC / USB)? (android version 2.1 / 2.2)

我写，我想获得不同类型的充电信号（无线，交流充电/ USB）无线充电的​​应用程序。我用的BroadcastReceiver得到充电信号，并发现，使用无线充电和交流充电返回相同的信号（AC充电）。
为了区分无线充电和交流充电，我要检测的USB接口插入与否。我尝试使用Intent.ACTION_UMS_CONNECTED检测USB信号，但它也返回SD卡。

I am writing a wireless charging application that I want to get different types of charging signals ( wireless , AC charging / USB ). I used broadcastReceiver to get the charging signal and found that using wireless charging and AC charging return the same signal (AC charging). To distinguish wireless charging and AC charging, I want to detect the USB socket is plugged or not. I try to use Intent.ACTION_UMS_CONNECTED to detect the USB signal but it also return SD card.

我如何检查USB插座插入或不（与AC / USB充电）？ （android版2.1 / 2.2）

How can I check the USB socket is plugged or not (Charging with AC / USB)? (android version 2.1 / 2.2)

推荐答案

要检查设备与AC / USB 充电，让我们试试这个，

To check device charging with AC / USB, Lets try this,

呼叫 registerReceiver（空，新的IntentFilter（Intent.ACTION_BATTERY_CHANGED））。这将返回对 BatteryManager 定义额外让你知道，如果它是在插入或不是意图。

Call registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED)). This will return an Intent that has extras defined on BatteryManager to let you know if it is plugged in or not.

一些与code，

public class PowerUtil {
    public static boolean isConnected(Context context) {
        Intent intent = context.registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
        int plugged = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
        return plugged == BatteryManager.BATTERY_PLUGGED_AC || plugged == BatteryManager.BATTERY_PLUGGED_USB;
    }
}

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