1 /* 2 * Copyright (C) 2019 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.dagger.qualifiers; 18 19 import static java.lang.annotation.RetentionPolicy.RUNTIME; 20 21 import java.lang.annotation.Documented; 22 import java.lang.annotation.Retention; 23 24 import javax.inject.Qualifier; 25 26 27 /** 28 * An annotation for injecting instances related to UI operations off the main-thread. 29 */ 30 @Qualifier 31 @Documented 32 @Retention(RUNTIME) 33 public @interface UiBackground { 34 } 35