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 onCreate(Bundle savedInstanceState)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 onDestroy()88 protected void onDestroy() { 89 if (mDisconnectedReceiver != null) { 90 unregisterReceiver(mDisconnectedReceiver); 91 } 92 super.onDestroy(); 93 } 94 onIntentSelected(ResolveInfo ri, Intent intent, boolean alwaysCheck)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