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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.systemui.usb;
     18 
     19 import com.android.internal.app.ResolverActivity;
     20 
     21 import android.content.ActivityNotFoundException;
     22 import android.content.Intent;
     23 import android.content.pm.ResolveInfo;
     24 import android.hardware.usb.IUsbManager;
     25 import android.hardware.usb.UsbAccessory;
     26 import android.hardware.usb.UsbDevice;
     27 import android.hardware.usb.UsbManager;
     28 import android.os.Bundle;
     29 import android.os.IBinder;
     30 import android.os.Parcelable;
     31 import android.os.RemoteException;
     32 import android.os.ServiceManager;
     33 import android.util.Log;
     34 import android.widget.CheckBox;
     35 
     36 import com.android.systemui.R;
     37 
     38 import java.util.ArrayList;
     39 
     40 /* Activity for choosing an application for a USB device or accessory */
     41 public class UsbResolverActivity extends ResolverActivity {
     42     public static final String TAG = "UsbResolverActivity";
     43     public static final String EXTRA_RESOLVE_INFOS = "rlist";
     44 
     45     private UsbDevice mDevice;
     46     private UsbAccessory mAccessory;
     47     private UsbDisconnectedReceiver mDisconnectedReceiver;
     48 
     49     @Override
     50     protected void onCreate(Bundle savedInstanceState) {
     51         Intent intent = getIntent();
     52         Parcelable targetParcelable = intent.getParcelableExtra(Intent.EXTRA_INTENT);
     53         if (!(targetParcelable instanceof Intent)) {
     54             Log.w("UsbResolverActivity", "Target is not an intent: " + targetParcelable);
     55             finish();
     56             return;
     57         }
     58         Intent target = (Intent)targetParcelable;
     59         ArrayList<ResolveInfo> rList = intent.getParcelableArrayListExtra(EXTRA_RESOLVE_INFOS);
     60         CharSequence title = getResources().getText(com.android.internal.R.string.chooseUsbActivity);
     61         super.onCreate(savedInstanceState, target, title, null, rList,
     62                 true /* Set alwaysUseOption to true to enable "always use this app" checkbox. */ );
     63 
     64         CheckBox alwaysUse = (CheckBox)findViewById(com.android.internal.R.id.alwaysUse);
     65         if (alwaysUse != null) {
     66             if (mDevice == null) {
     67                 alwaysUse.setText(R.string.always_use_accessory);
     68             } else {
     69                 alwaysUse.setText(R.string.always_use_device);
     70             }
     71         }
     72 
     73         mDevice = (UsbDevice)target.getParcelableExtra(UsbManager.EXTRA_DEVICE);
     74         if (mDevice != null) {
     75             mDisconnectedReceiver = new UsbDisconnectedReceiver(this, mDevice);
     76         } else {
     77             mAccessory = (UsbAccessory)target.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);
     78             if (mAccessory == null) {
     79                 Log.e(TAG, "no device or accessory");
     80                 finish();
     81                 return;
     82             }
     83             mDisconnectedReceiver = new UsbDisconnectedReceiver(this, mAccessory);
     84         }
     85     }
     86 
     87     @Override
     88     protected void onDestroy() {
     89         if (mDisconnectedReceiver != null) {
     90             unregisterReceiver(mDisconnectedReceiver);
     91         }
     92         super.onDestroy();
     93     }
     94 
     95     protected void onIntentSelected(ResolveInfo ri, Intent intent, boolean alwaysCheck) {
     96         try {
     97             IBinder b = ServiceManager.getService(USB_SERVICE);
     98             IUsbManager service = IUsbManager.Stub.asInterface(b);
     99             int uid = ri.activityInfo.applicationInfo.uid;
    100 
    101             if (mDevice != null) {
    102                 // grant permission for the device
    103                 service.grantDevicePermission(mDevice, uid);
    104                 // set or clear default setting
    105                 if (alwaysCheck) {
    106                     service.setDevicePackage(mDevice, ri.activityInfo.packageName);
    107                 } else {
    108                     service.setDevicePackage(mDevice, null);
    109                 }
    110             } else if (mAccessory != null) {
    111                 // grant permission for the accessory
    112                 service.grantAccessoryPermission(mAccessory, uid);
    113                 // set or clear default setting
    114                 if (alwaysCheck) {
    115                     service.setAccessoryPackage(mAccessory, ri.activityInfo.packageName);
    116                 } else {
    117                     service.setAccessoryPackage(mAccessory, null);
    118                 }
    119             }
    120 
    121             try {
    122                 startActivity(intent);
    123             } catch (ActivityNotFoundException e) {
    124                 Log.e(TAG, "startActivity failed", e);
    125             }
    126         } catch (RemoteException e) {
    127             Log.e(TAG, "onIntentSelected failed", e);
    128         }
    129     }
    130 }
    131