如何忽略usb host 模式设备连接确认对话框

<li class="alt"><span><span>package&nbsp;android.hardware.usb;&nbsp;&nbsp;</span></span></li><li class=""><span>&nbsp;&nbsp;</span></li><li class="alt"><span>public&nbsp;interface&nbsp;IUsbManager&nbsp;extends&nbsp;android.os.IInterface&nbsp;&nbsp;</span></li><li class=""><span>{&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;/**&nbsp;Local-side&nbsp;IPC&nbsp;implementation&nbsp;stub&nbsp;class.&nbsp;*/&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;static&nbsp;abstract&nbsp;class&nbsp;Stub&nbsp;extends&nbsp;android.os.Binder&nbsp;implements&nbsp;android.hardware.usb.IUsbManager&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/**&nbsp;Construct&nbsp;the&nbsp;stub&nbsp;at&nbsp;attach&nbsp;it&nbsp;to&nbsp;the&nbsp;interface.&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;Stub()&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;throw&nbsp;new&nbsp;RuntimeException(&nbsp;"Stub!"&nbsp;);&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/**&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;Cast&nbsp;an&nbsp;IBinder&nbsp;object&nbsp;into&nbsp;an&nbsp;android.hardware.usb.IUsbManager&nbsp;interface,&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;generating&nbsp;a&nbsp;proxy&nbsp;if&nbsp;needed.&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;static&nbsp;android.hardware.usb.IUsbManager&nbsp;asInterface(&nbsp;android.os.IBinder&nbsp;obj&nbsp;)&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;throw&nbsp;new&nbsp;RuntimeException(&nbsp;"Stub!"&nbsp;);&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;android.os.IBinder&nbsp;asBinder()&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;throw&nbsp;new&nbsp;RuntimeException(&nbsp;"Stub!"&nbsp;);&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;boolean&nbsp;onTransact(&nbsp;int&nbsp;code,&nbsp;android.os.Parcel&nbsp;data,&nbsp;android.os.Parcel&nbsp;reply,&nbsp;int&nbsp;flags&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;throw&nbsp;new&nbsp;RuntimeException(&nbsp;"Stub!"&nbsp;);&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_getDeviceList</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;0);&nbsp;&nbsp;</span></span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_openDevice</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;1);&nbsp;&nbsp;</span></span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_getCurrentAccessory</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;2);&nbsp;&nbsp;</span></span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_openAccessory</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;3);&nbsp;&nbsp;</span></span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_setDevicePackage</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;4);&nbsp;&nbsp;</span></span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_setAccessoryPackage</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;5);&nbsp;&nbsp;</span></span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_hasDevicePermission</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;6);&nbsp;&nbsp;</span></span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_hasAccessoryPermission</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;7);&nbsp;&nbsp;</span></span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_requestDevicePermission</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;8);&nbsp;&nbsp;</span></span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_requestAccessoryPermission</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;9);&nbsp;&nbsp;</span></span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_grantDevicePermission</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;10);&nbsp;&nbsp;</span></span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_grantAccessoryPermission</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;11);&nbsp;&nbsp;</span></span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_hasDefaults</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;12);&nbsp;&nbsp;</span></span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_clearDefaults</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;13);&nbsp;&nbsp;</span></span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_setCurrentFunction</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;14);&nbsp;&nbsp;</span></span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static&nbsp;final&nbsp;int&nbsp;<span class="attribute">TRANSACTION_setMassStorageBackingFile</span><span>&nbsp;=&nbsp;(android.os.IBinder.FIRST_CALL_TRANSACTION&nbsp;+&nbsp;15);&nbsp;&nbsp;</span></span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Returns&nbsp;a&nbsp;list&nbsp;of&nbsp;all&nbsp;currently&nbsp;attached&nbsp;USB&nbsp;devices&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;void&nbsp;getDeviceList(&nbsp;android.os.Bundle&nbsp;devices&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Returns&nbsp;a&nbsp;file&nbsp;descriptor&nbsp;for&nbsp;communicating&nbsp;with&nbsp;the&nbsp;USB&nbsp;device.&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;The&nbsp;native&nbsp;fd&nbsp;can&nbsp;be&nbsp;passed&nbsp;to&nbsp;usb_device_new()&nbsp;in&nbsp;libusbhost.&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;android.os.ParcelFileDescriptor&nbsp;openDevice(&nbsp;java.lang.String&nbsp;deviceName&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Returns&nbsp;the&nbsp;currently&nbsp;attached&nbsp;USB&nbsp;accessory&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;android.hardware.usb.UsbAccessory&nbsp;getCurrentAccessory()&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Returns&nbsp;a&nbsp;file&nbsp;descriptor&nbsp;for&nbsp;communicating&nbsp;with&nbsp;the&nbsp;USB&nbsp;accessory.&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;This&nbsp;file&nbsp;descriptor&nbsp;can&nbsp;be&nbsp;used&nbsp;with&nbsp;standard&nbsp;Java&nbsp;file&nbsp;operations.&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;android.os.ParcelFileDescriptor&nbsp;openAccessory(&nbsp;android.hardware.usb.UsbAccessory&nbsp;accessory&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Sets&nbsp;the&nbsp;default&nbsp;package&nbsp;for&nbsp;a&nbsp;USB&nbsp;device&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;(or&nbsp;clears&nbsp;it&nbsp;if&nbsp;the&nbsp;package&nbsp;name&nbsp;is&nbsp;null)&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;void&nbsp;setDevicePackage(&nbsp;android.hardware.usb.UsbDevice&nbsp;device,&nbsp;java.lang.String&nbsp;packageName&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Sets&nbsp;the&nbsp;default&nbsp;package&nbsp;for&nbsp;a&nbsp;USB&nbsp;accessory&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;(or&nbsp;clears&nbsp;it&nbsp;if&nbsp;the&nbsp;package&nbsp;name&nbsp;is&nbsp;null)&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;void&nbsp;setAccessoryPackage(&nbsp;android.hardware.usb.UsbAccessory&nbsp;accessory,&nbsp;java.lang.String&nbsp;packageName&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Returns&nbsp;true&nbsp;if&nbsp;the&nbsp;caller&nbsp;has&nbsp;permission&nbsp;to&nbsp;access&nbsp;the&nbsp;device.&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;boolean&nbsp;hasDevicePermission(android.hardware.usb.UsbDevice&nbsp;device)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Returns&nbsp;true&nbsp;if&nbsp;the&nbsp;caller&nbsp;has&nbsp;permission&nbsp;to&nbsp;access&nbsp;the&nbsp;accessory.&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;boolean&nbsp;hasAccessoryPermission(&nbsp;android.hardware.usb.UsbAccessory&nbsp;accessory&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Requests&nbsp;permission&nbsp;for&nbsp;the&nbsp;given&nbsp;package&nbsp;to&nbsp;access&nbsp;the&nbsp;device.&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;Will&nbsp;display&nbsp;a&nbsp;system&nbsp;dialog&nbsp;to&nbsp;query&nbsp;the&nbsp;user&nbsp;if&nbsp;permission&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;had&nbsp;not&nbsp;already&nbsp;been&nbsp;given.&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;void&nbsp;requestDevicePermission(&nbsp;android.hardware.usb.UsbDevice&nbsp;device,&nbsp;java.lang.String&nbsp;packageName,&nbsp;android.app.PendingIntent&nbsp;pi&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Requests&nbsp;permission&nbsp;for&nbsp;the&nbsp;given&nbsp;package&nbsp;to&nbsp;access&nbsp;the&nbsp;accessory.&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;Will&nbsp;display&nbsp;a&nbsp;system&nbsp;dialog&nbsp;to&nbsp;query&nbsp;the&nbsp;user&nbsp;if&nbsp;permission&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;had&nbsp;not&nbsp;already&nbsp;been&nbsp;given.&nbsp;Result&nbsp;is&nbsp;returned&nbsp;via&nbsp;pi.&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;void&nbsp;requestAccessoryPermission(&nbsp;android.hardware.usb.UsbAccessory&nbsp;accessory,&nbsp;java.lang.String&nbsp;packageName,&nbsp;android.app.PendingIntent&nbsp;pi&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Grants&nbsp;permission&nbsp;for&nbsp;the&nbsp;given&nbsp;UID&nbsp;to&nbsp;access&nbsp;the&nbsp;device&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;void&nbsp;grantDevicePermission(&nbsp;android.hardware.usb.UsbDevice&nbsp;device,&nbsp;int&nbsp;uid&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Grants&nbsp;permission&nbsp;for&nbsp;the&nbsp;given&nbsp;UID&nbsp;to&nbsp;access&nbsp;the&nbsp;accessory&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;void&nbsp;grantAccessoryPermission(&nbsp;android.hardware.usb.UsbAccessory&nbsp;accessory,&nbsp;int&nbsp;uid&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Returns&nbsp;true&nbsp;if&nbsp;the&nbsp;USB&nbsp;manager&nbsp;has&nbsp;default&nbsp;preferences&nbsp;or&nbsp;permissions&nbsp;for&nbsp;the&nbsp;package&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;boolean&nbsp;hasDefaults(&nbsp;java.lang.String&nbsp;packageName&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Clears&nbsp;default&nbsp;preferences&nbsp;and&nbsp;permissions&nbsp;for&nbsp;the&nbsp;package&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;void&nbsp;clearDefaults(&nbsp;java.lang.String&nbsp;packageName&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Sets&nbsp;the&nbsp;current&nbsp;USB&nbsp;function.&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;void&nbsp;setCurrentFunction(&nbsp;java.lang.String&nbsp;function,&nbsp;boolean&nbsp;makeDefault&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Sets&nbsp;the&nbsp;file&nbsp;path&nbsp;for&nbsp;USB&nbsp;mass&nbsp;storage&nbsp;backing&nbsp;file.&nbsp;*/&nbsp;&nbsp;</span></li><li class="alt"><span>&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;void&nbsp;setMassStorageBackingFile(&nbsp;java.lang.String&nbsp;path&nbsp;)&nbsp;throws&nbsp;android.os.RemoteException;&nbsp;&nbsp;</span></li><li class=""><span>}&nbsp;&nbsp;</span></li>

参考原文地址：http://stackoverflow.com/questions/13726583/bypass-android-usb-host-permision-confirmation-dialog/19681849#19681849

这篇文章提到三种方法可以实现所需要的效果：

1，把您的app放到系统应用文件夹下：/system/app/...

2，在AndroidManifest.xml中添加上系统签名；

以上两种方法作为第三方应用的开发者来说都有点难度，第三种方法的实现除了安装apk应用之后第一次插上USB设备弹出对话框：

勾选上 “默认情况下用于该USB设备”，点击确定即可。每次开机后默认打开该app应用。

使用本文提到的第三种方法确实可以避免每次打开app应用都弹出对话框的请求；

3，步骤一：在你的项目中加入包 android.hardware.usb，添加接口文件IUsbManager.java：

package android.hardware.usb;

public interface IUsbManager extends android.os.IInterface
{
    /** Local-side IPC implementation stub class. */
    public static abstract class Stub extends android.os.Binder implements android.hardware.usb.IUsbManager
    {
        /** Construct the stub at attach it to the interface. */
        public Stub()
        {
            throw new RuntimeException( "Stub!" );
        }
        /**
         * Cast an IBinder object into an android.hardware.usb.IUsbManager interface,
         * generating a proxy if needed.
         */
        public static android.hardware.usb.IUsbManager asInterface( android.os.IBinder obj )
        {
            throw new RuntimeException( "Stub!" );
        }

        public android.os.IBinder asBinder()
        {
            throw new RuntimeException( "Stub!" );
        }

        public boolean onTransact( int code, android.os.Parcel data, android.os.Parcel reply, int flags ) throws android.os.RemoteException
        {
            throw new RuntimeException( "Stub!" );
        }

        static final int TRANSACTION_getDeviceList = (android.os.IBinder.FIRST_CALL_TRANSACTION + 0);
        static final int TRANSACTION_openDevice = (android.os.IBinder.FIRST_CALL_TRANSACTION + 1);
        static final int TRANSACTION_getCurrentAccessory = (android.os.IBinder.FIRST_CALL_TRANSACTION + 2);
        static final int TRANSACTION_openAccessory = (android.os.IBinder.FIRST_CALL_TRANSACTION + 3);
        static final int TRANSACTION_setDevicePackage = (android.os.IBinder.FIRST_CALL_TRANSACTION + 4);
        static final int TRANSACTION_setAccessoryPackage = (android.os.IBinder.FIRST_CALL_TRANSACTION + 5);
        static final int TRANSACTION_hasDevicePermission = (android.os.IBinder.FIRST_CALL_TRANSACTION + 6);
        static final int TRANSACTION_hasAccessoryPermission = (android.os.IBinder.FIRST_CALL_TRANSACTION + 7);
        static final int TRANSACTION_requestDevicePermission = (android.os.IBinder.FIRST_CALL_TRANSACTION + 8);
        static final int TRANSACTION_requestAccessoryPermission = (android.os.IBinder.FIRST_CALL_TRANSACTION + 9);
        static final int TRANSACTION_grantDevicePermission = (android.os.IBinder.FIRST_CALL_TRANSACTION + 10);
        static final int TRANSACTION_grantAccessoryPermission = (android.os.IBinder.FIRST_CALL_TRANSACTION + 11);
        static final int TRANSACTION_hasDefaults = (android.os.IBinder.FIRST_CALL_TRANSACTION + 12);
        static final int TRANSACTION_clearDefaults = (android.os.IBinder.FIRST_CALL_TRANSACTION + 13);
        static final int TRANSACTION_setCurrentFunction = (android.os.IBinder.FIRST_CALL_TRANSACTION + 14);
        static final int TRANSACTION_setMassStorageBackingFile = (android.os.IBinder.FIRST_CALL_TRANSACTION + 15);
    }

    /* Returns a list of all currently attached USB devices */
    public void getDeviceList( android.os.Bundle devices ) throws android.os.RemoteException;
    /* Returns a file descriptor for communicating with the USB device.
         * The native fd can be passed to usb_device_new() in libusbhost.
         */
    public android.os.ParcelFileDescriptor openDevice( java.lang.String deviceName ) throws android.os.RemoteException;
    /* Returns the currently attached USB accessory */
    public android.hardware.usb.UsbAccessory getCurrentAccessory() throws android.os.RemoteException;
    /* Returns a file descriptor for communicating with the USB accessory.
         * This file descriptor can be used with standard Java file operations.
         */
    public android.os.ParcelFileDescriptor openAccessory( android.hardware.usb.UsbAccessory accessory ) throws android.os.RemoteException;
    /* Sets the default package for a USB device
         * (or clears it if the package name is null)
         */
    public void setDevicePackage( android.hardware.usb.UsbDevice device, java.lang.String packageName ) throws android.os.RemoteException;
    /* Sets the default package for a USB accessory
         * (or clears it if the package name is null)
         */
    public void setAccessoryPackage( android.hardware.usb.UsbAccessory accessory, java.lang.String packageName ) throws android.os.RemoteException;
    /* Returns true if the caller has permission to access the device. */
    public boolean hasDevicePermission(android.hardware.usb.UsbDevice device) throws android.os.RemoteException;
    /* Returns true if the caller has permission to access the accessory. */
    public boolean hasAccessoryPermission( android.hardware.usb.UsbAccessory accessory ) throws android.os.RemoteException;
    /* Requests permission for the given package to access the device.
         * Will display a system dialog to query the user if permission
         * had not already been given.
         */
    public void requestDevicePermission( android.hardware.usb.UsbDevice device, java.lang.String packageName, android.app.PendingIntent pi ) throws android.os.RemoteException;
    /* Requests permission for the given package to access the accessory.
         * Will display a system dialog to query the user if permission
         * had not already been given. Result is returned via pi.
         */
    public void requestAccessoryPermission( android.hardware.usb.UsbAccessory accessory, java.lang.String packageName, android.app.PendingIntent pi ) throws android.os.RemoteException;
    /* Grants permission for the given UID to access the device */
    public void grantDevicePermission( android.hardware.usb.UsbDevice device, int uid ) throws android.os.RemoteException;
    /* Grants permission for the given UID to access the accessory */
    public void grantAccessoryPermission( android.hardware.usb.UsbAccessory accessory, int uid ) throws android.os.RemoteException;
    /* Returns true if the USB manager has default preferences or permissions for the package */
    public boolean hasDefaults( java.lang.String packageName ) throws android.os.RemoteException;
    /* Clears default preferences and permissions for the package */
    public void clearDefaults( java.lang.String packageName ) throws android.os.RemoteException;
    /* Sets the current USB function. */
    public void setCurrentFunction( java.lang.String function, boolean makeDefault ) throws android.os.RemoteException;
    /* Sets the file path for USB mass storage backing file. */
    public void setMassStorageBackingFile( java.lang.String path ) throws android.os.RemoteException;
}

步骤二：再创建android.os包，添加ServiceManager.java类：

package android.os;

import java.util.Map;

public final class ServiceManager
{
    public static IBinder getService( String name )
    {
        throw new RuntimeException( "Stub!" );
    }

    /**
     * Place a new @a service called @a name into the service
     * manager.
     *
     * @param name the name of the new service
     * @param service the service object
     */
    public static void addService( String name, IBinder service )
    {
        throw new RuntimeException( "Stub!" );
    }

    /**
     * Retrieve an existing service called @a name from the
     * service manager.  Non-blocking.
     */
    public static IBinder checkService( String name )
    {
        throw new RuntimeException( "Stub!" );
    }

    public static String[] listServices() throws RemoteException
    {
        throw new RuntimeException( "Stub!" );
    }

    /**
     * This is only intended to be called when the process is first being brought
     * up and bound by the activity manager. There is only one thread in the process
     * at that time, so no locking is done.
     *
     * @param cache the cache of service references
     * @hide
     */
    public static void initServiceCache( Map<String, IBinder> cache )
    {
        throw new RuntimeException( "Stub!" );
    }
}

步骤三：在AndroidManifest.xml中加入权限

<uses-permission android:name="android.permission.MANAGE_USB" />

这时系统会提示错误：Permission is　only granted to system apps.

解决：Window -> Preferences -> Android -> Lint Error Checking.找到ID=ProtectedPermission这项设置它的”serverity“比"error"低即可。

到这里执行就OK了。

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