当 android 用作主机时，我试图绕过 android 上的 USB 权限，我点击了此链接，它提供了在 Android 4.x 上执行此操作的方法 bypass android usb host permission confirmation dialog
但是，这在 Android 9.0 上不起作用。查看AOSP源代码后发现，IUsbManager接口(interface)的改动还是蛮多的。我尝试对添加的新方法进行 stub ，并且在此过程中我还必须为 android.hardware.usb 包下的另外两个类创建 stub ，名称为 UsbPort 和 UsbPortStatus。
这是我为 android 9.0 编写的代码，但它不起作用。当我调用 grantDevicePermission 时，我不断收到 NoSuchMethod 异常。 ServiceManager.java 的代码与链接中的代码相同，因此我没有将其粘贴到此处。
帮助将不胜感激!
IUsbManager接口(interface):
package android.hardware.usb;
import android.os.IBinder;
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_isFunctionEnabled = (android.os.IBinder.FIRST_CALL_TRANSACTION + 14);
static final int TRANSACTION_setCurrentFunctions = (android.os.IBinder.FIRST_CALL_TRANSACTION + 15);
static final int TRANSACTION_setCurrentFunction = (android.os.IBinder.FIRST_CALL_TRANSACTION + 16);
static final int TRANSACTION_getCurrentFunctions = (android.os.IBinder.FIRST_CALL_TRANSACTION + 17);
static final int TRANSACTION_setScreenUnlockedFunctions = (android.os.IBinder.FIRST_CALL_TRANSACTION + 18);
static final int TRANSACTION_getScreenUnlockedFunctions = (android.os.IBinder.FIRST_CALL_TRANSACTION + 19);
static final int TRANSACTION_getControlFd = (android.os.IBinder.FIRST_CALL_TRANSACTION + 20);
static final int TRANSACTION_allowUsbDebugging = (android.os.IBinder.FIRST_CALL_TRANSACTION + 21);
static final int TRANSACTION_denyUsbDebugging = (android.os.IBinder.FIRST_CALL_TRANSACTION + 22);
static final int TRANSACTION_clearUsbDebuggingKeys = (android.os.IBinder.FIRST_CALL_TRANSACTION + 23);
static final int TRANSACTION_getPorts = (android.os.IBinder.FIRST_CALL_TRANSACTION + 24);
static final int TRANSACTION_getPortStatus = (android.os.IBinder.FIRST_CALL_TRANSACTION + 25);
static final int TRANSACTION_setPortRoles = (android.os.IBinder.FIRST_CALL_TRANSACTION + 26);
static final int TRANSACTION_setUsbDeviceConnectionHandler = (android.os.IBinder.FIRST_CALL_TRANSACTION + 27);
}
/* 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, java.lang.String packageName) 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, java.lang.String packageName) 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;
/* Returns true if the specified USB function is enabled. */
public boolean isFunctionEnabled(java.lang.String function) throws android.os.RemoteException;
/* Sets the current USB function. */
public void setCurrentFunctions(long functions) throws android.os.RemoteException;
/* Sets the current USB function. */
public void setCurrentFunction( java.lang.String function, boolean usbDataUnlocked ) throws android.os.RemoteException;
/* Gets the current USB functions. */
public long getCurrentFunctions() throws android.os.RemoteException;
/* Sets the screen unlocked USB function(s), which will be set automatically
* when the screen is unlocked.
*/
public void setScreenUnlockedFunctions(long functions) throws android.os.RemoteException;
/* Gets the current screen unlocked functions. */
public long getScreenUnlockedFunctions() throws android.os.RemoteException;
/* Get the functionfs control handle for the given function. Usb
* descriptors will already be written, and the handle will be
* ready to use.
*/
public android.os.ParcelFileDescriptor getControlFd(long function) 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;
/* Gets the list of USB ports. */
public android.hardware.usb.UsbPort[] getPorts() throws android.os.RemoteException;
/* Gets the status of the specified USB port. */
public android.hardware.usb.UsbPortStatus getPortStatus(java.lang.String portId) throws android.os.RemoteException;
/* Sets the port's current role. */
public void setPortRoles(java.lang.String portId, int powerRole, int dataRole) throws android.os.RemoteException;
/* Sets USB device connection handler. */
public void setUsbDeviceConnectionHandler(android.content.ComponentName usbDeviceConnectionHandler) throws android.os.RemoteException;
}
UsbPort.java:
package android.hardware.usb;
public class UsbPort implements android.os.Parcelable {
/** @hide */
public UsbPort(String id, int supportedModes) {
throw new RuntimeException( "Stub!" );
}
/**
* Gets the unique id of the port.
*
* @return The unique id of the port; not intended for display.
*/
public String getId() {
throw new RuntimeException( "Stub!" );
}
/**
* Gets the supported modes of the port.
* <p>
* The actual mode of the port may vary depending on what is plugged into it.
* </p>
*
*/
public int getSupportedModes() {
throw new RuntimeException( "Stub!" );
}
/**
* Combines one power and one data role together into a unique value with
* exactly one bit set. This can be used to efficiently determine whether
* a combination of roles is supported by testing whether that bit is present
* in a bit-field.
*
*/
public static int combineRolesAsBit(int powerRole, int dataRole) {
throw new RuntimeException( "Stub!" );
}
/** @hide */
public static String modeToString(int mode) {
throw new RuntimeException( "Stub!" );
}
/** @hide */
public static String powerRoleToString(int role) {
throw new RuntimeException( "Stub!" );
}
/** @hide */
public static String dataRoleToString(int role) {
throw new RuntimeException( "Stub!" );
}
/** @hide */
public static String roleCombinationsToString(int combo) {
throw new RuntimeException( "Stub!" );
}
/** @hide */
public static void checkMode(int powerRole) {
throw new RuntimeException( "Stub!" );
}
/** @hide */
public static void checkPowerRole(int dataRole) {
throw new RuntimeException( "Stub!" );
}
/** @hide */
public static void checkDataRole(int mode) {
throw new RuntimeException( "Stub!" );
}
/** @hide */
public static void checkRoles(int powerRole, int dataRole) {
throw new RuntimeException( "Stub!" );
}
/** @hide */
public boolean isModeSupported(int mode) {
throw new RuntimeException( "Stub!" );
}
@Override
public String toString() {
throw new RuntimeException( "Stub!" );
}
@Override
public int describeContents() {
throw new RuntimeException( "Stub!" );
}
@Override
public void writeToParcel(android.os.Parcel dest, int flags) {
throw new RuntimeException( "Stub!" );
}
public static final android.os.Parcelable.Creator<UsbPort> CREATOR =
new android.os.Parcelable.Creator<UsbPort>() {
@Override
public UsbPort createFromParcel(android.os.Parcel in) {
throw new RuntimeException( "Stub!" );
}
@Override
public UsbPort[] newArray(int size) {
throw new RuntimeException( "Stub!" );
}
};
}
UsbPortStatus.java:
package android.hardware.usb;
public class UsbPortStatus implements android.os.Parcelable {
/** @hide */
public UsbPortStatus(int currentMode, int currentPowerRole, int currentDataRole,
int supportedRoleCombinations) {
throw new RuntimeException( "Stub!" );
}
/**
* Returns true if there is anything connected to the port.
*
*/
public boolean isConnected() {
throw new RuntimeException( "Stub!" );
}
/**
* Gets the current mode of the port.
*
*/
public int getCurrentMode() {
throw new RuntimeException( "Stub!" );
}
/**
* Gets the current power role of the port.
*
*/
public int getCurrentPowerRole() {
throw new RuntimeException( "Stub!" );
}
/**
* Gets the current data role of the port.
*
*/
public int getCurrentDataRole() {
throw new RuntimeException( "Stub!" );
}
/**
* Returns true if the specified power and data role combination is supported
* given what is currently connected to the port.
*
*/
public boolean isRoleCombinationSupported(int powerRole, int dataRole) {
throw new RuntimeException( "Stub!" );
}
/** @hide */
public int getSupportedRoleCombinations() {
throw new RuntimeException( "Stub!" );
}
@Override
public String toString() {
throw new RuntimeException( "Stub!" );
}
@Override
public int describeContents() {
throw new RuntimeException( "Stub!" );
}
@Override
public void writeToParcel(android.os.Parcel dest, int flags) {
throw new RuntimeException( "Stub!" );
}
public static final android.os.Parcelable.Creator<UsbPortStatus> CREATOR =
new android.os.Parcelable.Creator<UsbPortStatus>() {
@Override
public UsbPortStatus createFromParcel(android.os.Parcel in) {
throw new RuntimeException( "Stub!" );
}
@Override
public UsbPortStatus[] newArray(int size) {
throw new RuntimeException( "Stub!" );
}
};
}
最佳答案
对非 SDK 接口(interface)的新限制 (Android 9):https://developer.android.com/distribute/best-practices/develop/restrictions-non-sdk-interfaces
可以通过以下方式解决:
adb shell
su
settings put global hidden_api_policy_pre_p_apps 1
settings put global hidden_api_policy_p_apps 1
关于java - 绕过 android-usb-主机-权限-确认-对话框，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55307486/