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Commit 580b6411 authored by Mike Lockwood's avatar Mike Lockwood
Browse files

Update USB accessory compatibility library to support new requestPermission API 



BUG: 4069037

Change-Id: Ieadb86fed577eeb7697d524e8a684ea6ea632f39
Signed-off-by: default avatarMike Lockwood <lockwood@android.com>
parent 607710ad

libs/usb/src/com/android/future/usb/UsbManager.java

+61 −5
Original line number Original line Diff line number Diff line
@@ -17,6 +17,7 @@ 




package com.android.future.usb;

package com.android.future.usb;





import android.app.PendingIntent;

import android.content.Context;

import android.content.Context;

import android.content.Intent;

import android.content.Intent;

import android.hardware.usb.IUsbManager;

import android.hardware.usb.IUsbManager;
@@ -55,28 +56,39 @@ public class UsbManager { 
    public static final String ACTION_USB_ACCESSORY_DETACHED =

    public static final String ACTION_USB_ACCESSORY_DETACHED =

            "android.hardware.usb.action.USB_ACCESSORY_DETACHED";

            "android.hardware.usb.action.USB_ACCESSORY_DETACHED";





    /**

     * Name of extra added to the {@link android.app.PendingIntent}

     * passed into {#requestPermission} or {#requestPermission}

     * containing a boolean value indicating whether the user granted permission or not.

     */

    public static final String EXTRA_PERMISSION_GRANTED = "permission";



    private final Context mContext;

    private final IUsbManager mService;

    private final IUsbManager mService;





    private UsbManager(IUsbManager service) {

    private UsbManager(Context context, IUsbManager service) {

        mContext = context;

        mService = service;

        mService = service;

    }

    }





    /**

    /**

     * Returns a new instance of this class.

     * Returns a new instance of this class.

     *

     *

     * @param context the caller's {@link android.content.Context}

     * @return UsbManager instance.

     * @return UsbManager instance.

     */

     */

    public static UsbManager getInstance() {

    public static UsbManager getInstance(Context context) {

        IBinder b = ServiceManager.getService(Context.USB_SERVICE);

        IBinder b = ServiceManager.getService(Context.USB_SERVICE);

        return new UsbManager(IUsbManager.Stub.asInterface(b));

        return new UsbManager(context, IUsbManager.Stub.asInterface(b));

    }

    }





    /**

    /**

     * Returns the {@link com.google.android.usb.UsbAccessory} for

     * Returns the {@link com.google.android.usb.UsbAccessory} for

     * a {@link #ACTION_USB_ACCESSORY_ATTACHED} or {@link #ACTION_USB_ACCESSORY_ATTACHED}

     * a {@link #ACTION_USB_ACCESSORY_ATTACHED} or {@link #ACTION_USB_ACCESSORY_ATTACHED}

     * broadcast Intent

     * broadcast Intent. This can also be used to retrieve the accessory from the result

     * of a call to {#requestPermission}.

     *

     *

     * @return UsbAccessory for the broadcast.

     * @return UsbAccessory for the intent.

     */

     */

    public static UsbAccessory getAccessory(Intent intent) {

    public static UsbAccessory getAccessory(Intent intent) {

        android.hardware.usb.UsbAccessory accessory =

        android.hardware.usb.UsbAccessory accessory =
@@ -124,4 +136,48 @@ public class UsbManager { 
            return null;

            return null;

        }

        }

    }

    }



    /**

     * Returns true if the caller has permission to access the accessory.

     * Permission might have been granted temporarily via

     * {@link #requestPermission(android.hardware.usb.UsbAccessory} or

     * by the user choosing the caller as the default application for the accessory.

     *

     * @param accessory to check permissions for

     * @return true if caller has permission

     */

    public boolean hasPermission(UsbAccessory accessory) {

        try {

            return mService.hasAccessoryPermission(new android.hardware.usb.UsbAccessory(

                        accessory.getManufacturer(),accessory.getModel(),

                        accessory.getType(), accessory.getVersion()));

        } catch (RemoteException e) {

            Log.e(TAG, "RemoteException in hasPermission", e);

            return false;

        }

    }



    /**

     * Requests temporary permission for the given package to access the accessory.

     * This may result in a system dialog being displayed to the user

     * if permission had not already been granted.

     * Success or failure is returned via the {@link android.app.PendingIntent} pi.

     * The boolean extra {@link #EXTRA_PERMISSION_GRANTED} will be attached to the

     * PendingIntent to indicate success or failure.

     * If successful, this grants the caller permission to access the device only

     * until the device is disconnected.

     *

     * @param accessory to request permissions for

     * @param pi PendingIntent for returning result

     */

    public void requestPermission(UsbAccessory accessory, PendingIntent pi) {

        try {

            mService.requestAccessoryPermission(new android.hardware.usb.UsbAccessory(

                        accessory.getManufacturer(),accessory.getModel(),

                        accessory.getType(), accessory.getVersion()),

                    mContext.getPackageName(), pi);

        } catch (RemoteException e) {

            Log.e(TAG, "RemoteException in requestPermission", e);

        }

    }

}
 
}

libs/usb/tests/AccessoryChat/src/com/android/accessorychat/AccessoryChat.java

+61 −16
Original line number Original line Diff line number Diff line
@@ -17,9 +17,11 @@ 
package com.android.accessorychat;

package com.android.accessorychat;





import android.app.Activity;

import android.app.Activity;

import android.app.PendingIntent;

import android.content.BroadcastReceiver;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Context;

import android.content.Intent;

import android.content.Intent;

import android.content.IntentFilter;

import android.os.Bundle;

import android.os.Bundle;

import android.os.Handler;

import android.os.Handler;

import android.os.Message;

import android.os.Message;
@@ -42,18 +44,47 @@ import java.io.IOException; 
public class AccessoryChat extends Activity implements Runnable, TextView.OnEditorActionListener {

public class AccessoryChat extends Activity implements Runnable, TextView.OnEditorActionListener {





    private static final String TAG = "AccessoryChat";

    private static final String TAG = "AccessoryChat";

    TextView mLog;



    EditText mEditText;

    private static final String ACTION_USB_PERMISSION =

    ParcelFileDescriptor mFileDescriptor;

            "com.android.accessorychat.action.USB_PERMISSION";

    FileInputStream mInputStream;



    FileOutputStream mOutputStream;

    private TextView mLog;

    private EditText mEditText;

    private ParcelFileDescriptor mFileDescriptor;

    private FileInputStream mInputStream;

    private FileOutputStream mOutputStream;

    private UsbManager mUsbManager;

    private PendingIntent mPermissionIntent;

    private boolean mPermissionRequestPending;





    private static final int MESSAGE_LOG = 1;

    private static final int MESSAGE_LOG = 1;





   private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {

        @Override

        public void onReceive(Context context, Intent intent) {

            if (ACTION_USB_PERMISSION.equals(intent.getAction())) {

                synchronized (this) {

                    UsbAccessory accessory = UsbManager.getAccessory(intent);

                    if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) {

                        openAccessory(accessory);

                    } else {

                        Log.d(TAG, "permission denied for accessory " + accessory);

                    }

                    mPermissionRequestPending = false;

                }

            }

        }

    };



    @Override

    @Override

    public void onCreate(Bundle savedInstanceState) {

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        super.onCreate(savedInstanceState);





        mUsbManager = UsbManager.getInstance(this);

        mPermissionIntent = PendingIntent.getBroadcast(this, 0, new Intent(ACTION_USB_PERMISSION), 0);

        IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);

        registerReceiver(mUsbReceiver, filter);



        setContentView(R.layout.accessory_chat);

        setContentView(R.layout.accessory_chat);

        mLog = (TextView)findViewById(R.id.log);

        mLog = (TextView)findViewById(R.id.log);

        mEditText = (EditText)findViewById(R.id.message);

        mEditText = (EditText)findViewById(R.id.message);
@@ -66,19 +97,18 @@ public class AccessoryChat extends Activity implements Runnable, TextView.OnEdit 




        Intent intent = getIntent();

        Intent intent = getIntent();

        Log.d(TAG, "intent: " + intent);

        Log.d(TAG, "intent: " + intent);

        UsbManager manager = UsbManager.getInstance();

        UsbAccessory[] accessories = mUsbManager.getAccessoryList();

        UsbAccessory[] accessories = manager.getAccessoryList();

        UsbAccessory accessory = (accessories == null ? null : accessories[0]);

        UsbAccessory accessory = (accessories == null ? null : accessories[0]);

        if (accessory != null) {

        if (accessory != null) {

            mFileDescriptor = manager.openAccessory(accessory);

            if (mUsbManager.hasPermission(accessory)) {

            if (mFileDescriptor != null) {

                openAccessory(accessory);

                FileDescriptor fd = mFileDescriptor.getFileDescriptor();

                mInputStream = new FileInputStream(fd);

                mOutputStream = new FileOutputStream(fd);

                Thread thread = new Thread(null, this, "AccessoryChat");

                thread.start();

            } else {

            } else {

                Log.d(TAG, "openAccessory fail");

                synchronized (mUsbReceiver) {

                    if (!mPermissionRequestPending) {

                        mUsbManager.requestPermission(accessory, mPermissionIntent);

                        mPermissionRequestPending = true;

                    }

                }

            }

            }

         } else {

         } else {

            Log.d(TAG, "mAccessory is null");

            Log.d(TAG, "mAccessory is null");
@@ -100,9 +130,24 @@ public class AccessoryChat extends Activity implements Runnable, TextView.OnEdit 




    @Override

    @Override

    public void onDestroy() {

    public void onDestroy() {

        unregisterReceiver(mUsbReceiver);

       super.onDestroy();

       super.onDestroy();

    }

    }





    private void openAccessory(UsbAccessory accessory) {

       mFileDescriptor = mUsbManager.openAccessory(accessory);

        if (mFileDescriptor != null) {

            FileDescriptor fd = mFileDescriptor.getFileDescriptor();

            mInputStream = new FileInputStream(fd);

            mOutputStream = new FileOutputStream(fd);

            Thread thread = new Thread(null, this, "AccessoryChat");

            thread.start();

            Log.d(TAG, "openAccessory succeeded");

        } else {

            Log.d(TAG, "openAccessory fail");

        }

    }



    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {

    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {

        if (actionId == EditorInfo.IME_ACTION_DONE && mOutputStream != null) {

        if (actionId == EditorInfo.IME_ACTION_DONE && mOutputStream != null) {

            try {

            try {