1 /* 2 * Copyright (C) 2017 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.settings.applications.assist; 18 19 import android.content.ComponentName; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.content.pm.PackageManager; 23 import android.content.pm.ResolveInfo; 24 import android.provider.Settings; 25 import android.service.voice.VoiceInteractionService; 26 import android.service.voice.VoiceInteractionServiceInfo; 27 import android.speech.RecognitionService; 28 import android.text.TextUtils; 29 import android.util.Log; 30 31 import com.android.internal.app.AssistUtils; 32 import com.android.internal.logging.nano.MetricsProto; 33 import com.android.settings.R; 34 import com.android.settings.applications.defaultapps.DefaultAppPickerFragment; 35 36 import com.android.settingslib.applications.DefaultAppInfo; 37 import com.android.settingslib.widget.CandidateInfo; 38 39 import java.util.ArrayList; 40 import java.util.List; 41 42 public class DefaultAssistPicker extends DefaultAppPickerFragment { 43 44 private static final String TAG = "DefaultAssistPicker"; 45 private static final Intent ASSIST_SERVICE_PROBE = 46 new Intent(VoiceInteractionService.SERVICE_INTERFACE); 47 private static final Intent ASSIST_ACTIVITY_PROBE = 48 new Intent(Intent.ACTION_ASSIST); 49 private final List<Info> mAvailableAssistants = new ArrayList<>(); 50 51 private AssistUtils mAssistUtils; 52 53 @Override 54 public int getMetricsCategory() { 55 return MetricsProto.MetricsEvent.DEFAULT_ASSIST_PICKER; 56 } 57 58 @Override 59 protected boolean shouldShowItemNone() { 60 return true; 61 } 62 63 @Override 64 public void onAttach(Context context) { 65 super.onAttach(context); 66 mAssistUtils = new AssistUtils(context); 67 } 68 69 @Override 70 protected int getPreferenceScreenResId() { 71 return R.xml.default_assist_settings; 72 } 73 74 @Override 75 protected List<DefaultAppInfo> getCandidates() { 76 mAvailableAssistants.clear(); 77 addAssistServices(); 78 addAssistActivities(); 79 80 final List<String> packages = new ArrayList<>(); 81 final List<DefaultAppInfo> candidates = new ArrayList<>(); 82 for (Info info : mAvailableAssistants) { 83 final String packageName = info.component.getPackageName(); 84 if (packages.contains(packageName)) { 85 // A service appears before an activity thus overrides it if from the same package. 86 continue; 87 } 88 packages.add(packageName); 89 candidates.add(new DefaultAppInfo(getContext(), mPm, mUserId, info.component)); 90 } 91 return candidates; 92 } 93 94 @Override 95 protected String getDefaultKey() { 96 final ComponentName cn = getCurrentAssist(); 97 if (cn != null) { 98 return new DefaultAppInfo(getContext(), mPm, mUserId, cn).getKey(); 99 } 100 return null; 101 } 102 103 @Override 104 protected String getConfirmationMessage(CandidateInfo appInfo) { 105 if (appInfo == null) { 106 return null; 107 } 108 return getContext().getString(R.string.assistant_security_warning, appInfo.loadLabel()); 109 } 110 111 @Override 112 protected boolean setDefaultKey(String key) { 113 if (TextUtils.isEmpty(key)) { 114 setAssistNone(); 115 return true; 116 } 117 ComponentName cn = ComponentName.unflattenFromString(key); 118 final Info info = findAssistantByPackageName(cn.getPackageName()); 119 if (info == null) { 120 setAssistNone(); 121 return true; 122 } 123 124 if (info.isVoiceInteractionService()) { 125 setAssistService(info); 126 } else { 127 setAssistActivity(info); 128 } 129 return true; 130 } 131 132 public ComponentName getCurrentAssist() { 133 return mAssistUtils.getAssistComponentForUser(mUserId); 134 } 135 136 private void addAssistServices() { 137 final PackageManager pm = mPm.getPackageManager(); 138 final List<ResolveInfo> services = pm.queryIntentServices( 139 ASSIST_SERVICE_PROBE, PackageManager.GET_META_DATA); 140 for (ResolveInfo resolveInfo : services) { 141 VoiceInteractionServiceInfo voiceInteractionServiceInfo = 142 new VoiceInteractionServiceInfo(pm, resolveInfo.serviceInfo); 143 if (!voiceInteractionServiceInfo.getSupportsAssist()) { 144 continue; 145 } 146 147 mAvailableAssistants.add(new Info( 148 new ComponentName(resolveInfo.serviceInfo.packageName, 149 resolveInfo.serviceInfo.name), 150 voiceInteractionServiceInfo)); 151 } 152 } 153 154 private void addAssistActivities() { 155 final PackageManager pm = mPm.getPackageManager(); 156 final List<ResolveInfo> activities = pm.queryIntentActivities( 157 ASSIST_ACTIVITY_PROBE, PackageManager.MATCH_DEFAULT_ONLY); 158 for (ResolveInfo resolveInfo : activities) { 159 mAvailableAssistants.add(new Info( 160 new ComponentName(resolveInfo.activityInfo.packageName, 161 resolveInfo.activityInfo.name))); 162 } 163 } 164 165 private Info findAssistantByPackageName(String packageName) { 166 for (Info info : mAvailableAssistants) { 167 if (TextUtils.equals(info.component.getPackageName(), packageName)) { 168 return info; 169 } 170 } 171 return null; 172 } 173 174 private void setAssistNone() { 175 Settings.Secure.putString(getContext().getContentResolver(), 176 Settings.Secure.ASSISTANT, ""); 177 Settings.Secure.putString(getContext().getContentResolver(), 178 Settings.Secure.VOICE_INTERACTION_SERVICE, ""); 179 Settings.Secure.putString(getContext().getContentResolver(), 180 Settings.Secure.VOICE_RECOGNITION_SERVICE, getDefaultRecognizer()); 181 } 182 183 private void setAssistService(Info serviceInfo) { 184 final String serviceComponentName = serviceInfo.component. 185 flattenToShortString(); 186 final String serviceRecognizerName = new ComponentName( 187 serviceInfo.component.getPackageName(), 188 serviceInfo.voiceInteractionServiceInfo.getRecognitionService()) 189 .flattenToShortString(); 190 191 Settings.Secure.putString(getContext().getContentResolver(), 192 Settings.Secure.ASSISTANT, serviceComponentName); 193 Settings.Secure.putString(getContext().getContentResolver(), 194 Settings.Secure.VOICE_INTERACTION_SERVICE, serviceComponentName); 195 Settings.Secure.putString(getContext().getContentResolver(), 196 Settings.Secure.VOICE_RECOGNITION_SERVICE, serviceRecognizerName); 197 } 198 199 private void setAssistActivity(Info activityInfo) { 200 Settings.Secure.putString(getContext().getContentResolver(), 201 Settings.Secure.ASSISTANT, activityInfo.component.flattenToShortString()); 202 Settings.Secure.putString(getContext().getContentResolver(), 203 Settings.Secure.VOICE_INTERACTION_SERVICE, ""); 204 Settings.Secure.putString(getContext().getContentResolver(), 205 Settings.Secure.VOICE_RECOGNITION_SERVICE, getDefaultRecognizer()); 206 } 207 208 private String getDefaultRecognizer() { 209 final ResolveInfo resolveInfo = mPm.getPackageManager().resolveService( 210 new Intent(RecognitionService.SERVICE_INTERFACE), 211 PackageManager.GET_META_DATA); 212 if (resolveInfo == null || resolveInfo.serviceInfo == null) { 213 Log.w(TAG, "Unable to resolve default voice recognition service."); 214 return ""; 215 } 216 217 return new ComponentName(resolveInfo.serviceInfo.packageName, 218 resolveInfo.serviceInfo.name).flattenToShortString(); 219 } 220 221 static class Info { 222 public final ComponentName component; 223 public final VoiceInteractionServiceInfo voiceInteractionServiceInfo; 224 225 Info(ComponentName component) { 226 this.component = component; 227 this.voiceInteractionServiceInfo = null; 228 } 229 230 Info(ComponentName component, VoiceInteractionServiceInfo voiceInteractionServiceInfo) { 231 this.component = component; 232 this.voiceInteractionServiceInfo = voiceInteractionServiceInfo; 233 } 234 235 public boolean isVoiceInteractionService() { 236 return voiceInteractionServiceInfo != null; 237 } 238 } 239 } 240
