1 /* 2 * Copyright (C) 2014 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.inputmethod.compat; 18 19 import android.app.Notification; 20 import android.os.Build; 21 22 import java.lang.reflect.Field; 23 import java.lang.reflect.Method; 24 25 public class NotificationCompatUtils { 26 // Note that TextInfo.getCharSequence() is supposed to be available in API level 21 and later. 27 private static final Method METHOD_setColor = 28 CompatUtils.getMethod(Notification.Builder.class, "setColor", int.class); 29 private static final Method METHOD_setVisibility = 30 CompatUtils.getMethod(Notification.Builder.class, "setVisibility", int.class); 31 private static final Method METHOD_setCategory = 32 CompatUtils.getMethod(Notification.Builder.class, "setCategory", String.class); 33 private static final Method METHOD_setPriority = 34 CompatUtils.getMethod(Notification.Builder.class, "setPriority", int.class); 35 private static final Method METHOD_build = 36 CompatUtils.getMethod(Notification.Builder.class, "build"); 37 private static final Field FIELD_VISIBILITY_SECRET = 38 CompatUtils.getField(Notification.class, "VISIBILITY_SECRET"); 39 private static final int VISIBILITY_SECRET = null == FIELD_VISIBILITY_SECRET ? 0 40 : (Integer) CompatUtils.getFieldValue(null /* receiver */, null /* defaultValue */, 41 FIELD_VISIBILITY_SECRET); 42 private static final Field FIELD_CATEGORY_RECOMMENDATION = 43 CompatUtils.getField(Notification.class, "CATEGORY_RECOMMENDATION"); 44 private static final String CATEGORY_RECOMMENDATION = null == FIELD_CATEGORY_RECOMMENDATION ? "" 45 : (String) CompatUtils.getFieldValue(null /* receiver */, null /* defaultValue */, 46 FIELD_CATEGORY_RECOMMENDATION); 47 private static final Field FIELD_PRIORITY_LOW = 48 CompatUtils.getField(Notification.class, "PRIORITY_LOW"); 49 private static final int PRIORITY_LOW = null == FIELD_PRIORITY_LOW ? 0 50 : (Integer) CompatUtils.getFieldValue(null /* receiver */, null /* defaultValue */, 51 FIELD_PRIORITY_LOW); 52 53 private NotificationCompatUtils() { 54 // This class is non-instantiable. 55 } 56 57 // Sets the accent color 58 public static void setColor(final Notification.Builder builder, final int color) { 59 CompatUtils.invoke(builder, null, METHOD_setColor, color); 60 } 61 62 public static void setVisibilityToSecret(final Notification.Builder builder) { 63 CompatUtils.invoke(builder, null, METHOD_setVisibility, VISIBILITY_SECRET); 64 } 65 66 public static void setCategoryToRecommendation(final Notification.Builder builder) { 67 CompatUtils.invoke(builder, null, METHOD_setCategory, CATEGORY_RECOMMENDATION); 68 } 69 70 public static void setPriorityToLow(final Notification.Builder builder) { 71 CompatUtils.invoke(builder, null, METHOD_setPriority, PRIORITY_LOW); 72 } 73 74 @SuppressWarnings("deprecation") 75 public static Notification build(final Notification.Builder builder) { 76 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) { 77 // #build was added in API level 16, JELLY_BEAN 78 return (Notification) CompatUtils.invoke(builder, null, METHOD_build); 79 } 80 // #getNotification was deprecated in API level 16, JELLY_BEAN 81 return builder.getNotification(); 82 } 83 } 84
