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.customlocale2; 18 19 import android.app.Activity; 20 import android.content.BroadcastReceiver; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.util.Log; 24 25 //----------------------------------------------- 26 27 /** 28 * Broadcast receiver that can change the system's locale. 29 * <p/> 30 * This allows an external script such as an automated testing framework 31 * to easily trigger a locale change on an emulator as such: 32 * <pre> 33 * $ adb shell am broadcast -a com.android.intent.action.SET_LOCALE \ 34 * --es com.android.intent.extra.LOCALE en_US 35 * </pre> 36 */ 37 public class CustomLocaleReceiver extends BroadcastReceiver { 38 39 private static final String TAG = CustomLocaleReceiver.class.getSimpleName(); 40 private static final boolean DEBUG = true; 41 42 /** Intent action that triggers this receiver. */ 43 public static final String ACTION_SET_LOCALE = "com.android.intent.action.SET_LOCALE"; 44 /** An extra String that specifies the locale to set, in the form "en_US". */ 45 public static final String EXTRA_LOCALE = "com.android.intent.extra.LOCALE"; 46 47 @Override onReceive(Context context, Intent intent)48 public void onReceive(Context context, Intent intent) { 49 setResult(Activity.RESULT_CANCELED, null, null); 50 if (intent == null || ! ACTION_SET_LOCALE.equals(intent.getAction())) { 51 if (DEBUG) { 52 Log.d(TAG, "Invalid intent: " + (intent == null ? "null" : intent.toString())); 53 } 54 return; 55 } 56 57 String locale = intent.getStringExtra(EXTRA_LOCALE); 58 59 // Enforce the locale string is either in the form "ab" or "ab_cd" 60 boolean is_ok = locale != null; 61 is_ok = is_ok && (locale.length() == 2 || locale.length() == 5); 62 if (is_ok && locale.length() >= 2) { 63 is_ok = Character.isLetter(locale.charAt(0)) && 64 Character.isLetter(locale.charAt(1)); 65 } 66 if (is_ok && locale.length() == 5) { 67 is_ok = locale.charAt(2) == '_' && 68 Character.isLetter(locale.charAt(3)) && 69 Character.isLetter(locale.charAt(4)); 70 } 71 72 if (!is_ok && DEBUG) { 73 Log.e(TAG, "Invalid locale: expected ab_CD but got " + locale); 74 } else if (is_ok) { 75 ChangeLocale.changeSystemLocale(locale); 76 setResult(Activity.RESULT_OK, locale, null); 77 } 78 } 79 80 } 81 82 83