我正在编写一款与USB主机通信相关的Android应用程序。每当我按下按钮时，我就会从Android发送示例数据。但是当我点击按钮时，会出现一个名为"Error receiving broadcast Intent"的错误，请告诉我如何解决这个问题。 这是我的USB驱动程序活动：
/*
* UsbController.java
* This file is part of UsbController
*
* Copyright (C) 2012 - Manuel Di Cerbo
*
* UsbController is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* UsbController is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with UsbController. If not, see <http://www.gnu.org/licenses/>.
*/
package com.example.democomm;
import java.util.HashMap;
import java.util.Iterator;
import android.app.Activity;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.hardware.usb.UsbConstants;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbDeviceConnection;
import android.hardware.usb.UsbEndpoint;
import android.hardware.usb.UsbInterface;
import android.hardware.usb.UsbManager;
import android.util.Log;
public class UsbDriver
{
private final Context mApplicationContext;
private final UsbManager mUsbManager;
@SuppressWarnings("unused")
private final UsbConnectionHandler mConnectionHandler;
private final int VID;
private final int PID;
protected static final String ACTION_USB_PERMISSION = "ch.serverbox.android.USB";
public static int Device_Exception;
public static UsbDevice Device_Details;
public static UsbEndpoint Data_In_End_Point = null;
public static UsbEndpoint Data_Out_End_Point = null;
public static UsbDeviceConnection USB_Device_Connection;
public UsbDriver(Activity parentActivity,UsbConnectionHandler connectionHandler, int vid, int pid)
{
mApplicationContext = parentActivity.getApplicationContext();
mConnectionHandler = connectionHandler;
mUsbManager = (UsbManager) mApplicationContext.getSystemService(Context.USB_SERVICE);
VID = 6790;
PID =29987;
Device_Exception = 0;
// init();
Check_Devices();
}
private void Check_Devices()
{
@SuppressWarnings("unused")
int j=0;
HashMap<String, UsbDevice> devlist = mUsbManager.getDeviceList();
Iterator<UsbDevice> deviter = devlist.values().iterator();
Device_Details = null;
if (devlist.size() != 0)
{
while (deviter.hasNext())
{
Device_Details = deviter.next();
if (Device_Details.getVendorId() == VID && Device_Details.getProductId() == PID)
{
if (!mUsbManager.hasPermission(Device_Details))
{
onPermissionDenied(Device_Details);
}
else
{
UsbDeviceConnection conn = mUsbManager.openDevice(Device_Details);
if (!conn.claimInterface(Device_Details.getInterface(1), true))
{
return;
}
conn.controlTransfer(0x21, 34, 0, 0, null, 0, 0);
conn.controlTransfer(0x21, 32, 0, 0,new byte[] { (byte) 0x80, 0x25 , 0x00, 0x00,0x00, 0x00, 0x08 }, 7, 0);
USB_Device_Connection=conn;
Data_In_End_Point = null;
Data_Out_End_Point = null;
UsbInterface usbIf = Device_Details.getInterface(1);
for (int i = 0; i < usbIf.getEndpointCount(); i++)
{
if (usbIf.getEndpoint(i).getType() == UsbConstants.USB_ENDPOINT_XFER_BULK)
{
if (usbIf.getEndpoint(i).getDirection() == UsbConstants.USB_DIR_IN)
Data_In_End_Point = usbIf.getEndpoint(i);
else
Data_Out_End_Point = usbIf.getEndpoint(i);
}
}
if (Data_In_End_Point == null || Data_Out_End_Point == null)
Device_Exception = 2;
}
break;
}j++;
}
if (Device_Details == null)
{
Device_Exception = 3;
return;
}
}
else
{
Device_Exception = 1;
return;
}
}
public void onPermissionDenied(UsbDevice d)
{
UsbManager usbman = (UsbManager) mApplicationContext.getSystemService(Context.USB_SERVICE);
PendingIntent pi = PendingIntent.getBroadcast(mApplicationContext, 0, new Intent(ACTION_USB_PERMISSION), 0);
mApplicationContext.registerReceiver(mPermissionReceiver,new IntentFilter(ACTION_USB_PERMISSION));
usbman.requestPermission(d, pi);
}
private class PermissionReceiver extends BroadcastReceiver
{
private final IPermissionListener mPermissionListener;
public PermissionReceiver(IPermissionListener permissionListener)
{
mPermissionListener = permissionListener;
}
@Override
public void onReceive(Context context, Intent intent)
{
mApplicationContext.unregisterReceiver(this);
if (intent.getAction().equals(ACTION_USB_PERMISSION))
{
if (!intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false))
{
mPermissionListener.onPermissionDenied((UsbDevice) intent.getParcelableExtra(UsbManager.EXTRA_DEVICE));
}
else
{
l("Permission granted");
UsbDevice dev = (UsbDevice) intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
if (dev != null)
{
if (dev.getVendorId() == VID && dev.getProductId() == PID)
{
Check_Devices() ;
}
}
else
{
e("device not present!");
}
}
}
}
}
// MAIN LOOP
// END MAIN LOOP
private BroadcastReceiver mPermissionReceiver = new PermissionReceiver(new IPermissionListener()
{
@Override
public void onPermissionDenied(UsbDevice d)
{
l("Permission denied on " + d.getDeviceId());
}
});
private static interface IPermissionListener
{
void onPermissionDenied(UsbDevice d);
}
public final static String TAG = "USBController";
private void l(Object msg)
{
Log.d(TAG, ">==<" + msg.toString() + " >==<");
}
private void e(Object msg)
{
Log.e(TAG, ">==< " + msg.toString() + " >==<");
}
}
这是我的USB处理程序：
/*
* IUsbConnectionHandler.java
* This file is part of UsbController
*
* Copyright (C) 2012 - Manuel Di Cerbo
*
* UsbController is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* UsbController is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with UsbController. If not, see <http://www.gnu.org/licenses/>.
*/
package com.example.democomm;
/**
* (c) Neuxs-Computing GmbH Switzerland
* @author Manuel Di Cerbo, 02.02.2012
*
*/
public interface UsbConnectionHandler {
void onUsbStopped();
void onErrorLooperRunningAlready();
void onDeviceNotFound();
}
这是我的主活动：
package com.example.democomm;
import java.nio.ByteBuffer;
import java.util.HashMap;
import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Typeface;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbDeviceConnection;
import android.hardware.usb.UsbEndpoint;
import android.hardware.usb.UsbInterface;
import android.hardware.usb.UsbManager;
import android.hardware.usb.UsbRequest;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity
{
public static final int targetVendorID = 6790;
public static final int targetProductID = 29987;
public UsbManager manager;
public UsbDeviceConnection usbDeviceConnection;
public UsbInterface usbInterfaceFound = null;
public UsbEndpoint endpointOut = null;
public UsbEndpoint endpointIn = null;
public UsbDevice usbdevice,device_details;
public UsbEndpoint listusbendpoint;
public static final String PREFS_NAME = "LoginPrefs";
HashMap<String, UsbDevice> devicelist= null;
int selectedendpoint;
static int Coil_No;
private static final int VID = 6790;
private static final int PID = 29987;
@SuppressWarnings("unused")
private static UsbDriver Usb_Driver_class;
ActionBar actionbar;
UsbConnectionHandler connectionHandler;
public static UsbDriver USB_Driver_Child;
public static boolean Communication_Failed,Frame_Ok,Total_Frame_Decoded;
static byte[] Communication_Byte;
public SharedPreferences loginpreferences;
public SharedPreferences.Editor loginpreferenceseditor;
public boolean savelogin;
public String Password;
Button sample_button;
public EditText username,password;
CheckBox remember_me;
Typeface custom_font;
String i = "";
Intent i2;
CheckBox show_password;
String ProcID;
String User_Name_string,password_string;
TextView title,username_txt,password_txt,company_name;
ByteBuffer buffer;
Button signin;
EditText dialog_username,dialog_password,dialog_confirm;
static byte[] sample;
static boolean Communication_Ok;
public static float []Wave_Form_Data=new float[1500];
public static float []Wave_Form_Data_1=new float[1500];
public static float Respsonse_Time,Drive_Voltage;
static int Sequence_No,Response_Time;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
signin = (Button)findViewById(R.id.button1);
signin.setOnClickListener(new View.OnClickListener()
{
@SuppressWarnings("static-access")
@Override
public void onClick(View v)
{
Communication_Byte=new byte[1];
if(Check_Devices_Available()==true)
{
int Packet_Size = USB_Driver_Child.Data_In_End_Point.getMaxPacketSize();
Toast.makeText(MainActivity.this,""+Packet_Size, Toast.LENGTH_LONG).show();
Receive.start();
Communication_Ok=false;
for(int i=0;(i<5 && Communication_Ok!=true);i++)
Send_Communication_Check_Command();
if(Communication_Ok)
Toast.makeText(MainActivity.this, "Communication Successfully Established", 1000).show();
else
Toast.makeText(MainActivity.this, "Communication Failure", 10000).show();
}
}
});
}
public boolean Check_Devices_Available()
{
Usb_Driver_class = new UsbDriver(this, connectionHandler, VID, PID);
if(USB_Driver_Child.Device_Exception==0)
{
if(USB_Driver_Child.USB_Device_Connection==null || USB_Driver_Child.Data_Out_End_Point==null)
return false;
Toast.makeText(MainActivity.this,"Device Found", 1000).show();
return true;
}
else if(USB_Driver_Child.Device_Exception==1)
{
Toast.makeText(MainActivity.this,"No Devices Attached ", Toast.LENGTH_LONG).show();
return false;
}
else if(USB_Driver_Child.Device_Exception==2)
{
Toast.makeText(MainActivity.this,"Device Found,But No End Points", Toast.LENGTH_LONG).show();
return false;
}
else if(USB_Driver_Child.Device_Exception==3)
{
Toast.makeText(MainActivity.this,"Unable to Open Device", Toast.LENGTH_LONG).show();
return false;
}
return false; //un known exception
}
Thread Receive = new Thread(new Runnable()
{
@SuppressWarnings("unused")
@Override
public void run()
{
Sequence_No=0;
buffer = ByteBuffer.allocate(64);
sample = new byte[64];
int Frame_Size;
UsbRequest request = new UsbRequest();
int i,j;
byte [] datarx=new byte[1];
char q;
while (true)
{
request.initialize(UsbDriver.USB_Device_Connection, UsbDriver.Data_In_End_Point);
request.queue(buffer, 64);
if (UsbDriver.USB_Device_Connection.requestWait() == request)
{
sample=buffer.array();
for(i=0;i<64;i++)
{
if(sample[i]=='&')
{
Communication_Ok=true;
break;
}
else if(sample[i]==0x03)
{
if(sample[0]==0x02)
Frame_Ok=true;
break;
}
}
if(Frame_Ok==true)
{
Frame_Ok=false;
if(sample[1]==1)
Coil_No=1;
else
Coil_No=2;
Response_Time= (int)(((sample[2]&0x00FF)<<8) + (sample[3]&0x00FF));
Total_Frame_Decoded=true;
sample = null;
}
}
}
}
});
private static void Send_Communication_Check_Command()
{
long i,j;
Communication_Byte[0]='&';
UsbDriver.USB_Device_Connection.bulkTransfer(UsbDriver.Data_Out_End_Point,Communication_Byte, 1, 0);
for(i=0;(i<1000 && Communication_Ok!=true) ;i++)
for(j=0;(j<1000 && Communication_Ok!=true);j++);
}
//Test_Name=1; For Drive Response Test
//Test_Name=2; For Drive Life Test
//Test_Name=3; To Stop test
/*public static void Send_Command_For_Drive_Response_Test(int Test_Name)
{
int i;
byte []Command_To_Transfer= new byte[5];
Communication_Ok=false;
for(i=0;i<5;i++)
{
Send_Communication_Check_Command();
if(Communication_Ok==true)
break;
}
if(Communication_Ok==true)
{
Command_To_Transfer[0]='*';
if(Test_Name==1)
{
Command_To_Transfer[1]=Command_To_Transfer[2]=(byte) 0xA1;
}
else if(Test_Name==2)
{
Command_To_Transfer[1]=Command_To_Transfer[2]=(byte) 0xA2;
}
else if(Test_Name==3)
{
Command_To_Transfer[1]=Command_To_Transfer[2]=(byte) 0xA3;
}
Command_To_Transfer[3]=0; //For Future Reference
Command_To_Transfer[4]='#';
UsbDriver.USB_Device_Connection.bulkTransfer(UsbDriver.Data_Out_End_Point,Command_To_Transfer, 5, 0);
Communication_Failed=true;
}
else
{
Communication_Failed=false;
}
}*/
}
这是我的日志记录：
FATAL EXCEPTION: main
java.lang.RuntimeException: Error receiving broadcast Intent { act=ch.serverbox.android.USB flg=0x10 (has extras) } in com.example.democomm.UsbDriver$PermissionReceiver@41ce8ea8
at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:773)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ArrayIndexOutOfBoundsException: length=1; index=1
at android.hardware.usb.UsbDevice.getInterface(UsbDevice.java:155)
at com.example.democomm.UsbDriver.Check_Devices(UsbDriver.java:88)
at com.example.democomm.UsbDriver.access$4(UsbDriver.java:65)
at com.example.democomm.UsbDriver$PermissionReceiver.onReceive(UsbDriver.java:171)
at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:763)
... 9 more