Android Usb設(shè)備的監(jiān)聽(Dev)外設(shè)端口的判定以及耳機(jī)的插拔

2019-10-21 21:33:21

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最近在公司用到外設(shè)，需要判斷接入的外設(shè)的VendorId和ProductId，然后給大家說一下自己的學(xué)習(xí)成果把，首先我門可以通過android.hardware.usb.action.USB_STATE監(jiān)聽自己的Usb連接的設(shè)備，只針對Usb設(shè)備。而想要監(jiān)聽外部設(shè)備的時候卻需要另外的兩個廣播進(jìn)行監(jiān)聽"android.hardware.usb.action.USB_DEVICE_ATTACHED"和"android.hardware.usb.action.USB_DEVICE_DETACHED"。要是想對耳機(jī)或者耳機(jī)的狀態(tài)進(jìn)行監(jiān)聽的時候需要的廣播是"android.intent.action.HEADSET_PLUG" 通過

int inttype=intent.getIntExtra("microphone",0)來獲取耳機(jī)是否有麥克風(fēng)。inttype==0表示沒有耳機(jī)inttype==1表示有耳機(jī)

我個人的建議就是將一部分代碼（根據(jù)個人情況而定）放到服務(wù)里面，或者是Application里面。

import com.example.usbusb.utils.ToastUtils;import android.app.Activity;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.os.Bundle;import android.widget.Toast;public class MainActivity extends Activity { //耳機(jī)的廣播 public static final String TAGLISTEN = "android.intent.action.HEADSET_PLUG"; //usb線的廣播 private final static String TAGUSB = "android.hardware.usb.action.USB_STATE"; //外設(shè)的廣播 public static final String TAGIN = "android.hardware.usb.action.USB_DEVICE_ATTACHED"; public static final String TAGOUT = "android.hardware.usb.action.USB_DEVICE_DETACHED";  private boolean BOOLEAN=false;  @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);  //賽選器 IntentFilter filter = new IntentFilter(); //篩選的條件 filter.addAction(TAGIN); filter.addAction(TAGOUT); filter.addAction(TAGUSB); //注冊廣播 動態(tài)注冊 registerReceiver(receiver, filter); } /** * 創(chuàng)建廣播的類 */ BroadcastReceiver receiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) {  String action = intent.getAction();  //判斷外設(shè)  if (action.equals(TAGIN)) {  ToastUtils.shwotoast(context, "外設(shè)已經(jīng)連接");  //Toast.makeText(context, "外設(shè)已經(jīng)連接", Toast.LENGTH_SHORT).show();  }  if (action.equals(TAGOUT)) {  if (BOOLEAN) {   ToastUtils.shwotoast(context, "外設(shè)已經(jīng)移除");   //Toast.makeText(context, "外設(shè)已經(jīng)移除", Toast.LENGTH_SHORT).show();  }  }  //判斷存儲usb  if (action.equals(TAGUSB)) {  boolean connected = intent.getExtras().getBoolean("connected");  if (connected) {   ToastUtils.shwotoast(context, "USB 已經(jīng)連接");   //Toast.makeText(MainActivity.this, "USB 已經(jīng)連接",Toast.LENGTH_SHORT).show();    } else {   if (BOOLEAN) {   ToastUtils.shwotoast(context, "USB 斷開");   //Toast.makeText(MainActivity.this, "USB 斷開",Toast.LENGTH_SHORT).show();   }  }  }  //判斷耳機(jī)  if (action.equals(TAGLISTEN)) {  int intExtra = intent.getIntExtra("state", 0);  // state --- 0代表拔出，1代表插入  // name--- 字符串，代表headset的類型。  // microphone -- 1代表這個headset有麥克風(fēng)，0則沒有  // int i=intent.getIntExtra("",0);  if (intExtra == 0) {   if (BOOLEAN) {   ToastUtils.shwotoast(context,"拔出耳機(jī)");   //Toast.makeText(context, "拔出耳機(jī)", Toast.LENGTH_SHORT).show();   }  }  if (intExtra == 1) {   ToastUtils.shwotoast(context, "耳機(jī)插入");   //Toast.makeText(context, "耳機(jī)插入", Toast.LENGTH_SHORT).show();   int intType = intent.getIntExtra("microphone", 0);   if (intType == 0) {   ToastUtils.shwotoast(context, "沒有麥克風(fēng)");   //Toast.makeText(context, "沒有麥克風(fēng)" + intType,Toast.LENGTH_SHORT).show();   }   if (intType == 1) {   ToastUtils.shwotoast(context,"有話筒" );   //Toast.makeText(context, "有話筒" + intType,Toast.LENGTH_SHORT).show();   }  }   }  BOOLEAN=true; } }; /** * 注銷廣播 */ protected void onDestroy() { unregisterReceiver(receiver); };}

ToastUtils工具類

import android.content.Context;import android.widget.Toast;public class ToastUtils { public static Toast toast=null; private ToastUtils toastUtils=new ToastUtils(); private ToastUtils(){}  public static void shwotoast(Context context,String msg){   if (toast==null) {  toast=Toast.makeText(context, msg, Toast.LENGTH_SHORT); }else {  if (toast!=null) {  toast.setText(msg);  } }   toast.show();  }}

下面的一個就是獲取每一個Id的端口號通過在Usb的廣播里面調(diào)用這個方法判斷是否是自己的設(shè)備，這樣就可完成自己想要的操作了（注意當(dāng)看到設(shè)備的ID是以0x開頭的是十六位的然后轉(zhuǎn)化成十進(jìn)制的數(shù)就能看到自己的東西了）

import java.util.HashMap;import android.annotation.SuppressLint;import android.content.Context;import android.hardware.usb.UsbDevice;import android.hardware.usb.UsbManager;import android.os.Bundle;import android.support.v7.app.ActionBarActivity;import android.util.Log; public class MainActivity extends ActionBarActivity {  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    UsbManager usbManager = (UsbManager) getSystemService(Context.USB_SERVICE);    HashMap<String, UsbDevice> map = usbManager.getDeviceList();    System.out.println("......................befor....................................");    for(UsbDevice device : map.values()){     System.out.println(".......one..........dName: " + device.getDeviceName());     System.out.println(".......tow.........vid: " + device.getVendorId() + "/t pid: " + device.getProductId());    }    System.out.println("........................after..................................");  }

結(jié)果我們都能看到有兩個設(shè)備

Android,Usb設(shè)備,監(jiān)聽,外設(shè)端口