Christine Chen | ee09a49 | 2013-08-06 16:02:29 -0700 | [diff] [blame^] | 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.phone; |
| 18 | |
| 19 | import android.app.ActivityManager; |
| 20 | import android.app.AlertDialog; |
| 21 | import android.app.Dialog; |
| 22 | import android.content.ComponentName; |
| 23 | import android.content.Context; |
| 24 | import android.content.DialogInterface; |
| 25 | import android.content.Intent; |
| 26 | import android.content.SharedPreferences; |
| 27 | import android.content.pm.ApplicationInfo; |
| 28 | import android.content.pm.PackageManager; |
| 29 | import android.content.pm.ResolveInfo; |
| 30 | import android.content.pm.ServiceInfo; |
| 31 | import android.content.res.Resources; |
| 32 | import android.graphics.drawable.Drawable; |
| 33 | import android.net.Uri; |
| 34 | import android.os.Handler; |
| 35 | import android.telephony.TelephonyManager; |
| 36 | import android.util.Log; |
| 37 | import android.view.LayoutInflater; |
| 38 | import android.view.View; |
| 39 | import android.view.ViewGroup; |
| 40 | import android.widget.BaseAdapter; |
| 41 | import android.widget.CheckBox; |
| 42 | import android.widget.CompoundButton; |
| 43 | import android.widget.ImageView; |
| 44 | import android.widget.TextView; |
| 45 | |
| 46 | import com.android.internal.telephony.Call; |
| 47 | import com.android.internal.telephony.Connection; |
| 48 | import com.android.internal.telephony.PhoneConstants; |
| 49 | import com.google.android.collect.Lists; |
| 50 | |
| 51 | import java.util.ArrayList; |
| 52 | import java.util.List; |
| 53 | |
| 54 | /** |
| 55 | * Helper class to manage the "Respond via Message" feature for incoming calls. |
| 56 | * |
| 57 | * @see com.android.phone.InCallScreen.internalRespondViaSms() |
| 58 | */ |
| 59 | public class RejectWithTextMessageManager { |
| 60 | |
| 61 | private static final String TAG = RejectWithTextMessageManager.class.getSimpleName(); |
| 62 | private static final boolean DBG = (PhoneGlobals.DBG_LEVEL >= 2); |
| 63 | |
| 64 | private static final String PERMISSION_SEND_RESPOND_VIA_MESSAGE = |
| 65 | "android.permission.SEND_RESPOND_VIA_MESSAGE"; |
| 66 | |
| 67 | /** The array of "canned responses"; see loadCannedResponses(). */ |
| 68 | private String[] mCannedResponses; |
| 69 | |
| 70 | /** SharedPreferences file name for our persistent settings. */ |
| 71 | private static final String SHARED_PREFERENCES_NAME = "respond_via_sms_prefs"; |
| 72 | |
| 73 | // Preference keys for the 4 "canned responses"; see RespondViaSmsManager$Settings. |
| 74 | // Since (for now at least) the number of messages is fixed at 4, and since |
| 75 | // SharedPreferences can't deal with arrays anyway, just store the messages |
| 76 | // as 4 separate strings. |
| 77 | private static final int NUM_CANNED_RESPONSES = 4; |
| 78 | private static final String KEY_CANNED_RESPONSE_PREF_1 = "canned_response_pref_1"; |
| 79 | private static final String KEY_CANNED_RESPONSE_PREF_2 = "canned_response_pref_2"; |
| 80 | private static final String KEY_CANNED_RESPONSE_PREF_3 = "canned_response_pref_3"; |
| 81 | private static final String KEY_CANNED_RESPONSE_PREF_4 = "canned_response_pref_4"; |
| 82 | private static final String KEY_PREFERRED_PACKAGE = "preferred_package_pref"; |
| 83 | private static final String KEY_INSTANT_TEXT_DEFAULT_COMPONENT = "instant_text_def_component"; |
| 84 | |
| 85 | /** |
| 86 | * Brings up the standard SMS compose UI. |
| 87 | */ |
| 88 | private void launchSmsCompose(String phoneNumber) { |
| 89 | if (DBG) log("launchSmsCompose: number " + phoneNumber); |
| 90 | |
| 91 | final Intent intent = getInstantTextIntent(phoneNumber, null, getSmsService()); |
| 92 | |
| 93 | if (DBG) log("- Launching SMS compose UI: " + intent); |
| 94 | PhoneGlobals.getInstance().startService(intent); |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Read the (customizable) canned responses from SharedPreferences, |
| 99 | * or from defaults if the user has never actually brought up |
| 100 | * the Settings UI. |
| 101 | * |
| 102 | * This method does disk I/O (reading the SharedPreferences file) |
| 103 | * so don't call it from the main thread. |
| 104 | * |
| 105 | * @see com.android.phone.RejectWithTextMessageManager.Settings |
| 106 | */ |
| 107 | public ArrayList<String> loadCannedResponses() { |
| 108 | if (DBG) log("loadCannedResponses()..."); |
| 109 | |
| 110 | final SharedPreferences prefs = PhoneGlobals.getInstance().getSharedPreferences( |
| 111 | SHARED_PREFERENCES_NAME, Context.MODE_PRIVATE); |
| 112 | final Resources res = PhoneGlobals.getInstance().getResources(); |
| 113 | |
| 114 | final ArrayList<String> responses = new ArrayList<String>(NUM_CANNED_RESPONSES); |
| 115 | |
| 116 | // Note the default values here must agree with the corresponding |
| 117 | // android:defaultValue attributes in respond_via_sms_settings.xml. |
| 118 | |
| 119 | responses.add(0, prefs.getString(KEY_CANNED_RESPONSE_PREF_1, |
| 120 | res.getString(R.string.respond_via_sms_canned_response_1))); |
| 121 | responses.add(1, prefs.getString(KEY_CANNED_RESPONSE_PREF_2, |
| 122 | res.getString(R.string.respond_via_sms_canned_response_2))); |
| 123 | responses.add(2, prefs.getString(KEY_CANNED_RESPONSE_PREF_3, |
| 124 | res.getString(R.string.respond_via_sms_canned_response_3))); |
| 125 | responses.add(3, prefs.getString(KEY_CANNED_RESPONSE_PREF_4, |
| 126 | res.getString(R.string.respond_via_sms_canned_response_4))); |
| 127 | return responses; |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * @return true if the "Respond via SMS" feature should be enabled |
| 132 | * for the specified incoming call. |
| 133 | * |
| 134 | * The general rule is that we *do* allow "Respond via SMS" except for |
| 135 | * the few (relatively rare) cases where we know for sure it won't |
| 136 | * work, namely: |
| 137 | * - a bogus or blank incoming number |
| 138 | * - a call from a SIP address |
| 139 | * - a "call presentation" that doesn't allow the number to be revealed |
| 140 | * |
| 141 | * In all other cases, we allow the user to respond via SMS. |
| 142 | * |
| 143 | * Note that this behavior isn't perfect; for example we have no way |
| 144 | * to detect whether the incoming call is from a landline (with most |
| 145 | * networks at least), so we still enable this feature even though |
| 146 | * SMSes to that number will silently fail. |
| 147 | */ |
| 148 | public static boolean allowRespondViaSmsForCall(Context context, Call ringingCall) { |
| 149 | // TODO(klp) implement this! |
| 150 | return true; |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Sends a text message without any interaction from the user. |
| 155 | */ |
| 156 | private void sendText(String phoneNumber, String message, ComponentName component) { |
| 157 | if (DBG) log("sendText: number " |
| 158 | + phoneNumber + ", message '" + message + "'"); |
| 159 | |
| 160 | PhoneGlobals.getInstance().startService(getInstantTextIntent(phoneNumber, message, |
| 161 | component)); |
| 162 | } |
| 163 | |
| 164 | private void sendTextAndExit(String phoneNumber, String message, ComponentName component, |
| 165 | boolean setDefaultComponent) { |
| 166 | // Send the selected message immediately with no user interaction. |
| 167 | sendText(phoneNumber, message, component); |
| 168 | |
| 169 | if (setDefaultComponent) { |
| 170 | final SharedPreferences prefs = PhoneGlobals.getInstance().getSharedPreferences( |
| 171 | SHARED_PREFERENCES_NAME, Context.MODE_PRIVATE); |
| 172 | prefs.edit() |
| 173 | .putString(KEY_INSTANT_TEXT_DEFAULT_COMPONENT, component.flattenToString()) |
| 174 | .apply(); |
| 175 | } |
| 176 | |
| 177 | // ...and show a brief confirmation to the user (since |
| 178 | // otherwise it's hard to be sure that anything actually |
| 179 | // happened.) |
| 180 | // TODO(klp): Ask the InCallUI to show a confirmation |
| 181 | |
| 182 | |
| 183 | // TODO: If the device is locked, this toast won't actually ever |
| 184 | // be visible! (That's because we're about to dismiss the call |
| 185 | // screen, which means that the device will return to the |
| 186 | // keyguard. But toasts aren't visible on top of the keyguard.) |
| 187 | // Possible fixes: |
| 188 | // (1) Is it possible to allow a specific Toast to be visible |
| 189 | // on top of the keyguard? |
| 190 | // (2) Artifically delay the dismissCallScreen() call by 3 |
| 191 | // seconds to allow the toast to be seen? |
| 192 | // (3) Don't use a toast at all; instead use a transient state |
| 193 | // of the InCallScreen (perhaps via the InCallUiState |
| 194 | // progressIndication feature), and have that state be |
| 195 | // visible for 3 seconds before calling dismissCallScreen(). |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * Queries the System to determine what packages contain services that can handle the instant |
| 200 | * text response Action AND have permissions to do so. |
| 201 | */ |
| 202 | private ArrayList<ComponentName> getPackagesWithInstantTextPermission() { |
| 203 | final PackageManager packageManager = PhoneGlobals.getInstance().getPackageManager(); |
| 204 | |
| 205 | final ArrayList<ComponentName> componentsWithPermission = new ArrayList<ComponentName>(); |
| 206 | |
| 207 | // Get list of all services set up to handle the Instant Text intent. |
| 208 | final List<ResolveInfo> infos = packageManager.queryIntentServices( |
| 209 | getInstantTextIntent("", null, null), 0); |
| 210 | |
| 211 | // Collect all the valid services |
| 212 | for (ResolveInfo resolveInfo : infos) { |
| 213 | final ServiceInfo serviceInfo = resolveInfo.serviceInfo; |
| 214 | if (serviceInfo == null) { |
| 215 | Log.w(TAG, "Ignore package without proper service."); |
| 216 | continue; |
| 217 | } |
| 218 | |
| 219 | // A Service is valid only if it requires the permission |
| 220 | // PERMISSION_SEND_RESPOND_VIA_MESSAGE |
| 221 | if (PERMISSION_SEND_RESPOND_VIA_MESSAGE.equals(serviceInfo.permission)) { |
| 222 | componentsWithPermission.add(new ComponentName(serviceInfo.packageName, |
| 223 | serviceInfo.name)); |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | return componentsWithPermission; |
| 228 | } |
| 229 | |
| 230 | /** |
| 231 | * @param phoneNumber Must not be null. |
| 232 | * @param message Can be null. If message is null, the returned Intent will be configured to |
| 233 | * launch the SMS compose UI. If non-null, the returned Intent will cause the specified message |
| 234 | * to be sent with no interaction from the user. |
| 235 | * @param component The component that should handle this intent. |
| 236 | * @return Service Intent for the instant response. |
| 237 | */ |
| 238 | private static Intent getInstantTextIntent(String phoneNumber, String message, |
| 239 | ComponentName component) { |
| 240 | final Uri uri = Uri.fromParts(Constants.SCHEME_SMSTO, phoneNumber, null); |
| 241 | final Intent intent = new Intent(TelephonyManager.ACTION_RESPOND_VIA_MESSAGE, uri); |
| 242 | if (message != null) { |
| 243 | intent.putExtra(Intent.EXTRA_TEXT, message); |
| 244 | } else { |
| 245 | intent.putExtra("exit_on_sent", true); |
| 246 | intent.putExtra("showUI", true); |
| 247 | } |
| 248 | if (component != null) { |
| 249 | intent.setComponent(component); |
| 250 | } |
| 251 | return intent; |
| 252 | } |
| 253 | |
| 254 | public void rejectCallWithNewMessage(Call call) { |
| 255 | launchSmsCompose(call.getLatestConnection().getAddress()); |
| 256 | } |
| 257 | |
| 258 | private ComponentName getSmsService() { |
| 259 | if (DBG) log("sendTextToDefaultActivity()..."); |
| 260 | final PackageManager packageManager = PhoneGlobals.getInstance().getPackageManager(); |
| 261 | |
| 262 | // Check to see if the default component to receive this intent is already saved |
| 263 | // and check to see if it still has the corrent permissions. |
| 264 | final SharedPreferences prefs = PhoneGlobals.getInstance(). |
| 265 | getSharedPreferences(SHARED_PREFERENCES_NAME, Context.MODE_PRIVATE); |
| 266 | final String flattenedName = prefs.getString(KEY_INSTANT_TEXT_DEFAULT_COMPONENT, null); |
| 267 | if (flattenedName != null) { |
| 268 | if (DBG) log("Default package was found." + flattenedName); |
| 269 | |
| 270 | final ComponentName componentName = ComponentName.unflattenFromString(flattenedName); |
| 271 | ServiceInfo serviceInfo = null; |
| 272 | try { |
| 273 | serviceInfo = packageManager.getServiceInfo(componentName, 0); |
| 274 | } catch (PackageManager.NameNotFoundException e) { |
| 275 | Log.w(TAG, "Default service does not have permission."); |
| 276 | } |
| 277 | |
| 278 | if (serviceInfo != null && |
| 279 | PERMISSION_SEND_RESPOND_VIA_MESSAGE.equals(serviceInfo.permission)) { |
| 280 | return componentName; |
| 281 | } else { |
| 282 | SharedPreferences.Editor editor = prefs.edit(); |
| 283 | editor.remove(KEY_INSTANT_TEXT_DEFAULT_COMPONENT); |
| 284 | editor.apply(); |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | final ArrayList<ComponentName> componentsWithPermission = |
| 289 | getPackagesWithInstantTextPermission(); |
| 290 | |
| 291 | final int size = componentsWithPermission.size(); |
| 292 | if (size == 0) { |
| 293 | Log.e(TAG, "No appropriate package receiving the Intent. Don't send anything"); |
| 294 | return null; |
| 295 | } else if (size == 1) { |
| 296 | return componentsWithPermission.get(0); |
| 297 | } else { |
| 298 | Log.v(TAG, "Choosing from one of the apps"); |
| 299 | // TODO(klp): Add an app picker. |
| 300 | return componentsWithPermission.get(0); |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | |
| 305 | public void rejectCallWithMessage(Call call, String message) { |
| 306 | final ComponentName componentName = getSmsService(); |
| 307 | |
| 308 | if (componentName != null) { |
| 309 | sendTextAndExit(call.getLatestConnection().getAddress(), message, componentName, |
| 310 | false); |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | private static void log(String msg) { |
| 315 | Log.d(TAG, msg); |
| 316 | } |
| 317 | } |