最近由于项目需要参考了很多关于不修改android源码情况下实现屏蔽USB授权对话框的博文，结合自身实践阐述给出细节的实现过程。
当前实现的策略是开发一个android内部服务，用于响应需要使用USB授权的app的申请，app需要在使用USB之前主动申请我们自行开发的授权，走在默认授权对话框触发之前提出申请。
一、创建一个android内部服务apk
1）具体使用的AndroidManifest.xm
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.harvbot.usbpermissionissuer">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<receiver android:name=".LaunchReceiver">
<intent-filter>
<action android:name="ACTION_USB_PERMISSION_ISSUER" />
</intent-filter>
</receiver>
<service android:enabled="true" android:name=".StubService" />
</application>
<uses-permission android:name="android.permission.MANAGE_USB" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
</manifest>
2)建立android.hardware.usb.IUsbManager.java替换系统源码
/*
* This file is auto-generated. DO NOT MODIFY.
* Original file: frameworks/base/core/java/android/hardware/usb/IUsbManager.aidl
*/
package android.hardware.usb;
/** @hide */
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
{
private static final java.lang.String DESCRIPTOR = "android.hardware.usb.IUsbManager";
/** Construct the stub at attach it to the interface. */
public Stub()
{
this.attachInterface(this, DESCRIPTOR);
}
/**
* 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)
{
if ((obj==null)) {
return null;
}
android.os.IInterface iin = obj.queryLocalInterface(DESCRIPTOR);
if (((iin!=null)&&(iin instanceof android.hardware.usb.IUsbManager))) {
return ((android.hardware.usb.IUsbManager)iin);
}
return new android.hardware.usb.IUsbManager.Stub.Proxy(obj);
}
@Override public android.os.IBinder asBinder()
{
return this;
}
@Override public boolean onTransact(int code, android.os.Parcel data, android.os.Parcel reply, int flags) throws android.os.RemoteException
{
switch (code)
{
case INTERFACE_TRANSACTION:
{
reply.writeString(DESCRIPTOR);
return true;
}
case TRANSACTION_getDeviceList:
{
data.enforceInterface(DESCRIPTOR);
android.os.Bundle _arg0;
_arg0 = new android.os.Bundle();
this.getDeviceList(_arg0);
reply.writeNoException();
if ((_arg0!=null)) {
reply.writeInt(1);
_arg0.writeToParcel(reply, android.os.Parcelable.PARCELABLE_WRITE_RETURN_VALUE);
}
else {
reply.writeInt(0);
}
return true;
}
case TRANSACTION_openDevice:
{
data.enforceInterface(DESCRIPTOR);
java.lang.String _arg0;
_arg0 = data.readString();
android.os.ParcelFileDescriptor _result = this.openDevice(_arg0);
reply.writeNoException();
if ((_result!=null)) {
reply.writeInt(1);
_result.writeToParcel(reply, android.os.Parcelable.PARCELABLE_WRITE_RETURN_VALUE);
}
else {
reply.writeInt(0);
}
return true;
}
case TRANSACTION_getCurrentAccessory:
{
data.enforceInterface(DESCRIPTOR);
android.hardware.usb.UsbAccessory _result = this.getCurrentAccessory();
reply.writeNoException();
if ((_result!=null)) {
reply.writeInt(1);
_result.writeToParcel(reply, android.os.Parcelable.PARCELABLE_WRITE_RETURN_VALUE);
}
else {
reply.writeInt(0);
}
return true;
}
case TRANSACTION_openAccessory:
{
data.enforceInterface(DESCRIPTOR);
android.hardware.usb.UsbAccessory _arg0;
if ((0!=data.readInt())) {
_arg0 = android.hardware.usb.UsbAccessory.CREATOR.createFromParcel(data);
}
else {
_arg0 = null;
}
android.os.ParcelFileDescriptor _result = this.openAccessory(_arg0);
reply.writeNoException();
if ((_result!=null)) {
reply.writeInt(1);
_result.writeToParcel(reply, android.os.Parcelable.PARCELABLE_WRITE_RETURN_VALUE);
}
else {
reply.writeInt(0);
}
return true;
}
case TRANSACTION_setDevicePackage:
{
data.enforceInterface(DESCRIPTOR);
android.hardware.usb.UsbDevice _arg0;
if ((0!=data.readInt())) {
_arg0 = android.hardware.usb.UsbDevice.CREATOR.createFromParcel(data);
}
else {
_arg0 = null;
}
java.lang.String _arg1;
_arg1 = data.readString();
int _arg2;
_arg2 = data.readInt();
this.setDevicePackage(_arg0, _arg1, _arg2);
reply.writeNoException();
return true;
}
case TRANSACTION_setAccessoryPackage:
{
data.enforceInterface(DESCRIPTOR);
android.hardware.usb.UsbAccessory _arg0;
if ((0!=data.readInt())) {
_arg0 = android.hardware.usb.UsbAccessory.CREATOR.createFromParcel(data);
}
else {
_arg0 = null;
}
java.lang.String _arg1;
_arg1 = data.readString();
int _arg2;
_arg2 = data.readInt();
this.setAccessoryPackage(_arg0, _arg1, _arg2);
reply.writeNoException();
return true;
}
case TRANSACTION_hasDevicePermission:
{
data.enforceInterface(DESCRIPTOR);
android.hardware.usb.UsbDevice _arg0;
if ((0!=data.readInt())) {
_arg0 = android.hardware.usb.UsbDevice.CREATOR.createFromParcel(data);
}
else {
_arg0 = null;
}
boolean _result = this.hasDevicePermission(_arg0);
reply.writeNoException();
reply.writeInt(((_result)?(1):(0)));
return true;
}
case TRANSACTION_hasAccessoryPermission:
{
data.enforceInterface(DESCRIPTOR);
android.hardware.usb.UsbAccessory _arg0;
if ((0!=data.readInt())) {
_arg0 = android.hardware.usb.UsbAccessory.CREATOR.createFromParcel(data);
}
else {
_arg0 = null;
}
boolean _result = this.hasAccessoryPermission(_arg0);
reply.writeNoException();
reply.writeInt(((_result)?(1):(0)));
return true;
}
case TRANSACTION_requestDevicePermission:
{
data.enforceInterface(DESCRIPTOR);
android.hardware.usb.UsbDevice _arg0;
if ((0!=data.readInt())) {
_arg0 = android.hardware.usb.UsbDevice.CREATOR.createFromParcel(data);
}
else {
_arg0 = null;
}
java.lang.String _arg1;
_arg1 = data.readString();
android.app.PendingIntent _arg2;
if ((0!=data.readInt())) {
_arg2 = android.app.PendingIntent.CREATOR.createFromParcel(data);
}
else {
_arg2 = null;
}
this.requestDevicePermission(_arg0, _arg1, _arg2);
reply.writeNoException();
return true;
}
case TRANSACTION_requestAccessoryPermission:
{
data.enforceInterface(DESCRIPTOR);
android.hardware.usb.UsbAccessory _arg0;
if ((0!=data.readInt())) {
_arg0 = android.hardware.usb.UsbAccessory.CREATOR.createFromParcel(data);
}
else {
_arg0 = null;
}
java.lang.String _arg1;
_arg1 = data.readString();
android.app.PendingIntent _arg2;
if ((0!=data.readInt())) {
_arg2 = android.app.PendingIntent.CREATOR.createFromParcel(data);
}
else {
_arg2 = null;
}
this.requestAccessoryPermission(_arg0, _arg1, _arg2);
reply.writeNoException();
return true;
}
case TRANSACTION_grantDevicePermission:
{
data.enforceInterface(DESCRIPTOR);
android.hardware.usb.UsbDevice _arg0;
if ((0!=data.readInt())) {
_arg0 = android.hardware.usb.UsbDevice.CREATOR.createFromParcel(data);
}
else {
_arg0 = null;
}
int _arg1;
_arg1 = data.readInt();
this.grantDevicePermission(_arg0, _arg1);
reply.writeNoException();
return true;
}
case TRANSACTION_grantAccessoryPermission:
{
data.enforceInterface(DESCRIPTOR);
android.hardware.usb.UsbAccessory _arg0;
if ((0!=data.readInt())) {
_arg0 = android.hardware.usb.UsbAccessory.CREATOR.createFromParcel(data);
}
else {
_arg0 = null;
}
int _arg1;
_arg1 = data.readInt();
this.grantAccessoryPermission(_arg0, _arg1);
reply.writeNoException();
return true;
}
case TRANSACTION_hasDefaults:
{
data.enforceInterface(DESCRIPTOR);
java.lang.String _arg0;
_arg0 = data.readString();
int _arg1;
_arg1 = data.readInt();
boolean _result = this.hasDefaults(_arg0, _arg1);
reply.writeNoException();
reply.writeInt(((_result)?(1):(0)));
return true;
}
case TRANSACTION_clearDefaults:
{
data.enforceInterface(DESCRIPTOR);
java.lang.String _arg0;
_arg0 = data.readString();
int _arg1;
_arg1 = data.readInt();
this.clearDefaults(_arg0, _arg1);
reply.writeNoException();
return true;
}
case TRANSACTION_setCurrentFunction:
{
data.enforceInterface(DESCRIPTOR);
java.lang.String _arg0;
_arg0 = data.readString();
boolean _arg1;
_arg1 = (0!=data.readInt());
this.setCurrentFunction(_arg0, _arg1);
reply.writeNoException();
return true;
}
case TRANSACTION_setMassStorageBackingFile:
{
data.enforceInterface(DESCRIPTOR);
java.lang.String _arg0;
_arg0 = data.readString();
this.setMassStorageBackingFile(_arg0);
reply.writeNoException();
return true;
}
case TRANSACTION_allowUsbDebugging:
{
data.enforceInterface(DESCRIPTOR);
boolean _arg0;
_arg0 = (0!=data.readInt());
java.lang.String _arg1;
_arg1 = data.readString();
this.allowUsbDebugging(_arg0, _arg1);
reply.writeNoException();
return true;
}
case TRANSACTION_denyUsbDebugging:
{
data.enforceInterface(DESCRIPTOR);
this.denyUsbDebugging();
reply.writeNoException();
return true;
}
case TRANSACTION_clearUsbDebuggingKeys:
{
data.enforceInterface(DESCRIPTOR);
this.clearUsbDebuggingKeys();
reply.writeNoException();
return true;
}
}
return super.onTransact(code, data, reply, flags);
}
private static class Proxy implements android.hardware.usb.IUsbManager
{
private android.os.IBinder mRemote;
Proxy(android.os.IBinder remote)
{
mRemote = remote;
}
@Override public android.os.IBinder asBinder()
{
return mRemote;
}
public java.lang.String getInterfaceDescriptor()
{
return DESCRIPTOR;
}
/* Returns a list of all currently attached USB devices */
@Override public void getDeviceList(android.os.Bundle devices) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_getDeviceList, _data, _reply, 0);
_reply.readException();
if ((0!=_reply.readInt())) {
devices.readFromParcel(_reply);
}
}
finally {
_reply.recycle();
_data.recycle();
}
}
/* Returns a file descriptor for communicating with the USB device.
* The native fd can be passed to usb_device_new() in libusbhost.
*/
@Override public android.os.ParcelFileDescriptor openDevice(java.lang.String deviceName) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
android.os.ParcelFileDescriptor _result;
try {
_data.writeInterfaceToken(DESCRIPTOR);
_data.writeString(deviceName);
mRemote.transact(Stub.TRANSACTION_openDevice, _data, _reply, 0);
_reply.readException();
if ((0!=_reply.readInt())) {
_result = android.os.ParcelFileDescriptor.CREATOR.createFromParcel(_reply);
}
else {
_result = null;
}
}
finally {
_reply.recycle();
_data.recycle();
}
return _result;
}
/* Returns the currently attached USB accessory */
@Override public android.hardware.usb.UsbAccessory getCurrentAccessory() throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
android.hardware.usb.UsbAccessory _result;
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_getCurrentAccessory, _data, _reply, 0);
_reply.readException();
if ((0!=_reply.readInt())) {
_result = android.hardware.usb.UsbAccessory.CREATOR.createFromParcel(_reply);
}
else {
_result = null;
}
}
finally {
_reply.recycle();
_data.recycle();
}
return _result;
}
/* Returns a file descriptor for communicating with the USB accessory.
* This file descriptor can be used with standard Java file operations.
*/
@Override public android.os.ParcelFileDescriptor openAccessory(android.hardware.usb.UsbAccessory accessory) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
android.os.ParcelFileDescriptor _result;
try {
_data.writeInterfaceToken(DESCRIPTOR);
if ((accessory!=null)) {
_data.writeInt(1);
accessory.writeToParcel(_data, 0);
}
else {
_data.writeInt(0);
}
mRemote.transact(Stub.TRANSACTION_openAccessory, _data, _reply, 0);
_reply.readException();
if ((0!=_reply.readInt())) {
_result = android.os.ParcelFileDescriptor.CREATOR.createFromParcel(_reply);
}
else {
_result = null;
}
}
finally {
_reply.recycle();
_data.recycle();
}
return _result;
}
/* Sets the default package for a USB device
* (or clears it if the package name is null)
*/
@Override public void setDevicePackage(android.hardware.usb.UsbDevice device, java.lang.String packageName, int userId) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
if ((device!=null)) {
_data.writeInt(1);
device.writeToParcel(_data, 0);
}
else {
_data.writeInt(0);
}
_data.writeString(packageName);
_data.writeInt(userId);
mRemote.transact(Stub.TRANSACTION_setDevicePackage, _data, _reply, 0);
_reply.readException();
}
finally {
_reply.recycle();
_data.recycle();
}
}
/* Sets the default package for a USB accessory
* (or clears it if the package name is null)
*/
@Override public void setAccessoryPackage(android.hardware.usb.UsbAccessory accessory, java.lang.String packageName, int userId) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
if ((accessory!=null)) {
_data.writeInt(1);
accessory.writeToParcel(_data, 0);
}
else {
_data.writeInt(0);
}
_data.writeString(packageName);
_data.writeInt(userId);
mRemote.transact(Stub.TRANSACTION_setAccessoryPackage, _data, _reply, 0);
_reply.readException();
}
finally {
_reply.recycle();
_data.recycle();
}
}
/* Returns true if the caller has permission to access the device. */
@Override public boolean hasDevicePermission(android.hardware.usb.UsbDevice device) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
boolean _result;
try {
_data.writeInterfaceToken(DESCRIPTOR);
if ((device!=null)) {
_data.writeInt(1);
device.writeToParcel(_data, 0);
}
else {
_data.writeInt(0);
}
mRemote.transact(Stub.TRANSACTION_hasDevicePermission, _data, _reply, 0);
_reply.readException();
_result = (0!=_reply.readInt());
}
finally {
_reply.recycle();
_data.recycle();
}
return _result;
}
/* Returns true if the caller has permission to access the accessory. */
@Override public boolean hasAccessoryPermission(android.hardware.usb.UsbAccessory accessory) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
boolean _result;
try {
_data.writeInterfaceToken(DESCRIPTOR);
if ((accessory!=null)) {
_data.writeInt(1);
accessory.writeToParcel(_data, 0);
}
else {
_data.writeInt(0);
}
mRemote.transact(Stub.TRANSACTION_hasAccessoryPermission, _data, _reply, 0);
_reply.readException();
_result = (0!=_reply.readInt());
}
finally {
_reply.recycle();
_data.recycle();
}
return _result;
}
/* 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.
*/
@Override public void requestDevicePermission(android.hardware.usb.UsbDevice device, java.lang.String packageName, android.app.PendingIntent pi) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
if ((device!=null)) {
_data.writeInt(1);
device.writeToParcel(_data, 0);
}
else {
_data.writeInt(0);
}
_data.writeString(packageName);
if ((pi!=null)) {
_data.writeInt(1);
pi.writeToParcel(_data, 0);
}
else {
_data.writeInt(0);
}
mRemote.transact(Stub.TRANSACTION_requestDevicePermission, _data, _reply, 0);
_reply.readException();
}
finally {
_reply.recycle();
_data.recycle();
}
}
/* 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.
*/
@Override public void requestAccessoryPermission(android.hardware.usb.UsbAccessory accessory, java.lang.String packageName, android.app.PendingIntent pi) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
if ((accessory!=null)) {
_data.writeInt(1);
accessory.writeToParcel(_data, 0);
}
else {
_data.writeInt(0);
}
_data.writeString(packageName);
if ((pi!=null)) {
_data.writeInt(1);
pi.writeToParcel(_data, 0);
}
else {
_data.writeInt(0);
}
mRemote.transact(Stub.TRANSACTION_requestAccessoryPermission, _data, _reply, 0);
_reply.readException();
}
finally {
_reply.recycle();
_data.recycle();
}
}
/* Grants permission for the given UID to access the device */
@Override public void grantDevicePermission(android.hardware.usb.UsbDevice device, int uid) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
if ((device!=null)) {
_data.writeInt(1);
device.writeToParcel(_data, 0);
}
else {
_data.writeInt(0);
}
_data.writeInt(uid);
mRemote.transact(Stub.TRANSACTION_grantDevicePermission, _data, _reply, 0);
_reply.readException();
}
finally {
_reply.recycle();
_data.recycle();
}
}
/* Grants permission for the given UID to access the accessory */
@Override public void grantAccessoryPermission(android.hardware.usb.UsbAccessory accessory, int uid) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
if ((accessory!=null)) {
_data.writeInt(1);
accessory.writeToParcel(_data, 0);
}
else {
_data.writeInt(0);
}
_data.writeInt(uid);
mRemote.transact(Stub.TRANSACTION_grantAccessoryPermission, _data, _reply, 0);
_reply.readException();
}
finally {
_reply.recycle();
_data.recycle();
}
}
/* Returns true if the USB manager has default preferences or permissions for the package */
@Override public boolean hasDefaults(java.lang.String packageName, int userId) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
boolean _result;
try {
_data.writeInterfaceToken(DESCRIPTOR);
_data.writeString(packageName);
_data.writeInt(userId);
mRemote.transact(Stub.TRANSACTION_hasDefaults, _data, _reply, 0);
_reply.readException();
_result = (0!=_reply.readInt());
}
finally {
_reply.recycle();
_data.recycle();
}
return _result;
}
/* Clears default preferences and permissions for the package */
@Override public void clearDefaults(java.lang.String packageName, int userId) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
_data.writeString(packageName);
_data.writeInt(userId);
mRemote.transact(Stub.TRANSACTION_clearDefaults, _data, _reply, 0);
_reply.readException();
}
finally {
_reply.recycle();
_data.recycle();
}
}
/* Sets the current USB function. */
@Override public void setCurrentFunction(java.lang.String function, boolean makeDefault) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
_data.writeString(function);
_data.writeInt(((makeDefault)?(1):(0)));
mRemote.transact(Stub.TRANSACTION_setCurrentFunction, _data, _reply, 0);
_reply.readException();
}
finally {
_reply.recycle();
_data.recycle();
}
}
/* Sets the file path for USB mass storage backing file. */
@Override public void setMassStorageBackingFile(java.lang.String path) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
_data.writeString(path);
mRemote.transact(Stub.TRANSACTION_setMassStorageBackingFile, _data, _reply, 0);
_reply.readException();
}
finally {
_reply.recycle();
_data.recycle();
}
}
/* Allow USB debugging from the attached host. If alwaysAllow is true, add the
* the public key to list of host keys that the user has approved.
*/
@Override public void allowUsbDebugging(boolean alwaysAllow, java.lang.String publicKey) throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
_data.writeInt(((alwaysAllow)?(1):(0)));
_data.writeString(publicKey);
mRemote.transact(Stub.TRANSACTION_allowUsbDebugging, _data, _reply, 0);
_reply.readException();
}
finally {
_reply.recycle();
_data.recycle();
}
}
/* Deny USB debugging from the attached host */
@Override public void denyUsbDebugging() throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_denyUsbDebugging, _data, _reply, 0);
_reply.readException();
}
finally {
_reply.recycle();
_data.recycle();
}
}
/* Clear public keys installed for secure USB debugging */
@Override public void clearUsbDebuggingKeys() throws android.os.RemoteException
{
android.os.Parcel _data = android.os.Parcel.obtain();
android.os.Parcel _reply = android.os.Parcel.obtain();
try {
_data.writeInterfaceToken(DESCRIPTOR);
mRemote.transact(Stub.TRANSACTION_clearUsbDebuggingKeys, _data, _reply, 0);
_reply.readException();
}
finally {
_reply.recycle();
_data.recycle();
}
}
}
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);
static final int TRANSACTION_allowUsbDebugging = (android.os.IBinder.FIRST_CALL_TRANSACTION + 16);
static final int TRANSACTION_denyUsbDebugging = (android.os.IBinder.FIRST_CALL_TRANSACTION + 17);
static final int TRANSACTION_clearUsbDebuggingKeys = (android.os.IBinder.FIRST_CALL_TRANSACTION + 18);
}
/* 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, int userId) 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, int userId) 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, int userId) throws android.os.RemoteException;
/* Clears default preferences and permissions for the package */
public void clearDefaults(java.lang.String packageName, int userId) 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;
/* Allow USB debugging from the attached host. If alwaysAllow is true, add the
* the public key to list of host keys that the user has approved.
*/
public void allowUsbDebugging(boolean alwaysAllow, java.lang.String publicKey) throws android.os.RemoteException;
/* Deny USB debugging from the attached host */
public void denyUsbDebugging() throws android.os.RemoteException;
/* Clear public keys installed for secure USB debugging */
public void clearUsbDebuggingKeys() throws android.os.RemoteException;
}
3）建立android.os.ServiceManager.java替换源码
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!" );
}
}
4）建立响应app申请的BroadcastReceiver类，com.harvbot.usbpermissionissuer.LaunchReceiver.java
package com.harvbot.usbpermissionissuer;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.res.XmlResourceParser;
import android.hardware.usb.IUsbManager;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbManager;
import android.os.IBinder;
import android.os.ServiceManager;
import android.text.TextUtils;
import android.util.Log;
import org.json.JSONObject;
import org.xmlpull.v1.XmlPullParserException;
import com.harvbot.usbpermissionissuer.logging.LogManager;
public class LaunchReceiver extends BroadcastReceiver
{
private final String TAG = "com.harvbot.usb";
private final String ACTION_USB_PERMISSION_ISSUER = "ACTION_USB_PERMISSION_ISSUER";
private LogManager logger;
public void onReceive( Context context, Intent intent )
{
logger = new LogManager(context);
String action = intent.getAction();
if( action != null && action.equals( ACTION_USB_PERMISSION_ISSUER ) )
{
logger.log("Receiver event processing.");
try {
UsbDeviceDescriptor deviceFilter = new UsbDeviceDescriptor();
deviceFilter.packageName = intent.getStringExtra("packageName");
deviceFilter.vendorId = intent.getIntExtra("vendorId", -1);
deviceFilter.productId = intent.getIntExtra("productId", -1);
deviceFilter.deviceClass = intent.getIntExtra("deviceClass", -1);
deviceFilter.deviceSubclass = intent.getIntExtra("deviceSubclass", -1);
if(TextUtils.isEmpty(deviceFilter.packageName)){
logger.log("PackageName is Null");
return;
}
PackageManager pm = context.getPackageManager();
ApplicationInfo ai = pm.getApplicationInfo(deviceFilter.packageName, 0);
UsbManager manager = (UsbManager) context.getSystemService(Context.USB_SERVICE);
IBinder b = ServiceManager.getService(Context.USB_SERVICE);
IUsbManager service = IUsbManager.Stub.asInterface(b);
HashMap<String, UsbDevice> deviceList = manager.getDeviceList();
logger.log("List of usb devices was loaded. Number of attached devices: " +
new Integer(deviceList.size()).toString());
if((deviceFilter.deviceClass != -1 && deviceFilter.deviceSubclass != -1) ||
(deviceFilter.productId != -1 && deviceFilter.vendorId != -1)) {
logger.log("The usb permission will be granted for application " + ai.packageName);
Iterator<UsbDevice> deviceIterator = deviceList.values().iterator();
while (deviceIterator.hasNext()) {
UsbDevice device = deviceIterator.next();
if ((device.getDeviceClass() == deviceFilter.deviceClass &&
device.getDeviceSubclass() == deviceFilter.deviceSubclass) ||
(device.getVendorId() == deviceFilter.vendorId &&
device.getProductId() == deviceFilter.productId)) {
try {
service.grantDevicePermission(device, ai.uid);
service.setDevicePackage(device, ai.packageName, ai.uid);
logger.log("Usb permission is granted for application " +
ai.packageName + " for device " + device.toString() +
" and user " + ai.uid + " is granted");
} catch (SecurityException se) {
logger.log(se.toString());
Log.e(TAG, se.toString());
}
}
}
} else {
logger.log("Device params is Error "+deviceFilter.toString());
}
}
catch(Exception e)
{
logger.log(e.toString());
Log.e(TAG, e.toString());
}
}
}
}额外需要的UsbDeviceDescriptor.java和StubService.java一并给出，日志实现自行替换
package com.harvbot.usbpermissionissuer;
//二选一，确定USB设备
public class UsbDeviceDescriptor {
public String packageName;
//第一组，确定USB设备
public int deviceClass;
public int deviceSubclass;
//第二级，确定USB设备
public int vendorId;
public int productId;
@Override
public String toString() {
return "packageName:" + packageName
+ ", deviceClass:" + deviceClass
+ ", deviceSubclass: " + deviceSubclass
+ ", vendorId: " + vendorId
+ ", productId: " + productId;
}
}
package com.harvbot.usbpermissionissuer;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;
public class StubService extends Service
{
private static final String TAG = "StubService";
@Override
public IBinder onBind(Intent intent) {
return null;
}
public void onDestroy() {
Log.d(TAG, "onDestroy");
}
@Override
public void onStart(Intent intent, int startid)
{
Log.d(TAG, "onStart");
}
}
5）以上关键文件工程化后生成usb-permission-issuer.apk,需要将其拷贝到android系统下的/system/prv-app目录下（该目录是系统预装apk路径），并修改其文件权限，例如777
备注：我的做法是直接下载了“kingroot”和“RE文件管理”，安装后，使用“kingroot”给“RE文件管理”开启root权限，然后通过“RE文件管理”将“usb-permission-issuer.apk”拷贝到/system/prv-app目录下，并修改其文件权限（选择文件长按，RE文件管理会出现更多功能菜单，里面有权限修改）
6）在需要的app进行动态广播申请，实例如下：
private void UsbInit()
{
UsbInitPermission(1);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
UsbInitPermission(2);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
UsbInitPermission(3);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
UsbInitPermission(4);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
static final String YOUR_APP_PACKAGE_NAMESPACE = "你的app-package";
static final String ACTION_USB_PERMISSION_APP = "ACTION_USB_PERMISSION_ISSUER";
private void UsbInitPermission(int id)
{
Intent intent_usb = new Intent();
intent_usb.setAction(ACTION_USB_PERMISSION_APP);
intent_usb.putExtra("packageName", YOUR_APP_PACKAGE_NAMESPACE);
//device_filter.xml里的字段
intent_usb.putExtra("vendorId", 1659);
switch(id)
{
case 1:
intent_usb.putExtra("productId", 8963);
break;
case 2:
intent_usb.putExtra("productId", 9553);
break;
case 3:
intent_usb.putExtra("productId", 8964);
break;
case 4:
intent_usb.putExtra("productId", 9475);
break;
}
//发送广播
sendBroadcast(intent_usb);
}然后再合适的地方调用UsbInit(),等待一段时间后会获得授权，再使用你的USB，这样就不会再有USB授权对话框弹出
7）如果懒得编译授权的apk，可以直接采用https://download.csdn.net/download/py8105/10313534，再完成5、6步骤。
