/* * Copyright (C) 2015 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package android.annotation; import static java.lang.annotation.ElementType.CONSTRUCTOR; import static java.lang.annotation.ElementType.METHOD; import static java.lang.annotation.ElementType.TYPE; import static java.lang.annotation.RetentionPolicy.SOURCE; import android.os.Looper; import java.lang.annotation.Retention; import java.lang.annotation.Target; /** * Denotes that the annotated method or constructor should only be called on the * UI thread. If the annotated element is a class, then all methods in the class * should be called on the UI thread. *

* Example: * *

 * 
 *  @UiThread
 *  public abstract void setText(@NonNull String text) { ... }
 * 
 * 
* * @memberDoc This method must be called on the thread that originally created * this UI element. This is typically the * {@linkplain Looper#getMainLooper() main thread} of your app. * @hide */ @Retention(SOURCE) @Target({METHOD,CONSTRUCTOR,TYPE}) public @interface UiThread { }