安卓：检测USB闪存驱动器插入 [英] Android: Detect USB flash drive plugged in

问题描述

有没有一种方法，当一个USB闪存驱动器插入一个Android设备来检测？我能够检测使用广播接收机的SD卡，但它不用于USB工作。我想避免投票。

code登记接收器：

 私人无效RegisterUpdateReceiver（）
{
    IntentFilter的IntentFilter的=新的IntentFilter（）;
    intentFilter.addAction（android.intent.action.MEDIA_MOUNTED）;
    intentFilter.addDataScheme（文件）;
    myReceiver =新MyReceiver（）;
    this.registerReceiver（myReceiver，IntentFilter的）;
}
 

接收器code：

 公共类MyReceiver扩展广播接收器
{
    @覆盖
    公共无效的onReceive（上下文的背景下，意图意图）
    {
        字符串行动= intent.getAction（）;
        如果（action.equals（android.intent.action.MEDIA_MOUNTED））
        {
            //反应事件
        }
}
 

解决方案

的Andr​​oid，在SDK的水平，没有USB驱动器的概念。没有关于他们应安装没有规则，当他们出现/消失等也许一些这方面的标准化会在未来的Andr​​oid版本中的广播，但今天是不存在的。

Is there a way to detect when a USB flash drive is plugged into an Android device? I'm able to detect an SD card using a broadcast receiver, but it doesn't work for USB. I'd like to avoid polling.

code to register receiver:

private void RegisterUpdateReceiver()
{
    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction("android.intent.action.MEDIA_MOUNTED");
    intentFilter.addDataScheme("file");
    myReceiver = new MyReceiver();
    this.registerReceiver(myReceiver, intentFilter);
}

receiver code:

public class MyReceiver extends BroadcastReceiver
{
    @Override
    public void onReceive(Context context, Intent intent)
    {
        String action = intent.getAction();
        if (action.equals("android.intent.action.MEDIA_MOUNTED")) 
        {
            // react to event
        }
}

解决方案

Android, at the SDK level, has no concept of USB drives. There are no rules for where they should be mounted, broadcasts for when they appear/disappear, etc. Perhaps some standardization in this area will come in future Android releases, but it is not there today.

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