如何在Android MTP设备中检测USB连接？

我需要能够在基于MTP的Android设备上检测USB连接，也就是当它被插入和断开时。这是我目前的相关代码，它是基于

manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.waracle.ncr"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="12"
        android:targetSdkVersion="17" />

    <uses-feature 
        android:name="android.hardware.usb.host"
        />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >

        <activity
            android:name="com.example.TestActivity"
            android:label="@string/app_name" >

            <intent-filter>             
                <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
                <action android:name="android.hardware.usb.action.USB_DEVICE_DETACHED" />
                <meta-data android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" android:resource="@xml/device_filter"/>
                <meta-data android:name="android.hardware.usb.action.USB_DEVICE_DETACHED" android:resource="@xml/device_filter"/>
            </intent-filter>
        </activity>     

    </application>

</manifest>

这是广播接收器

private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {    
    public void onReceive(Context context, Intent intent) {
        Toast.makeText(TestActivity.this, "Test broadcastreceiver Received something", Toast.LENGTH_SHORT).show();
    }
};

这应该让我干杯如果它收到任何东西，什么都不会发生

---

我四处寻找解决方案，但我发现一切可行的都是基于UMS的。如果有人能帮上忙，那就太好了，谢谢。

您解决问题了吗？

IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
registerReceiver(mUsbReceiver, filter);

private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {    
    public void onReceive(Context context, Intent intent) {
        Toast.makeText(TestActivity.this, "Test broadcastreceiver Received something", Toast.LENGTH_SHORT).show();
    }
};