Add SDK 29 sources.
Test: N/A
Change-Id: Iedb7a31029e003928eb16f7e69ed147e72bb6235
diff --git a/android/content/ComponentCallbacks.java b/android/content/ComponentCallbacks.java
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+++ b/android/content/ComponentCallbacks.java
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+/*
+ * Copyright (C) 2006 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.content;
+
+import android.annotation.NonNull;
+import android.content.res.Configuration;
+
+/**
+ * The set of callback APIs that are common to all application components
+ * ({@link android.app.Activity}, {@link android.app.Service},
+ * {@link ContentProvider}, and {@link android.app.Application}).
+ *
+ * <p class="note"><strong>Note:</strong> You should also implement the {@link
+ * ComponentCallbacks2} interface, which provides the {@link
+ * ComponentCallbacks2#onTrimMemory} callback to help your app manage its memory usage more
+ * effectively.</p>
+ */
+public interface ComponentCallbacks {
+ /**
+ * Called by the system when the device configuration changes while your
+ * component is running. Note that, unlike activities, other components
+ * are never restarted when a configuration changes: they must always deal
+ * with the results of the change, such as by re-retrieving resources.
+ *
+ * <p>At the time that this function has been called, your Resources
+ * object will have been updated to return resource values matching the
+ * new configuration.
+ *
+ * <p>For more information, read <a href="{@docRoot}guide/topics/resources/runtime-changes.html"
+ * >Handling Runtime Changes</a>.
+ *
+ * @param newConfig The new device configuration.
+ */
+ void onConfigurationChanged(@NonNull Configuration newConfig);
+
+ /**
+ * This is called when the overall system is running low on memory, and
+ * actively running processes should trim their memory usage. While
+ * the exact point at which this will be called is not defined, generally
+ * it will happen when all background process have been killed.
+ * That is, before reaching the point of killing processes hosting
+ * service and foreground UI that we would like to avoid killing.
+ *
+ * <p>You should implement this method to release
+ * any caches or other unnecessary resources you may be holding on to.
+ * The system will perform a garbage collection for you after returning from this method.
+ * <p>Preferably, you should implement {@link ComponentCallbacks2#onTrimMemory} from
+ * {@link ComponentCallbacks2} to incrementally unload your resources based on various
+ * levels of memory demands. That API is available for API level 14 and higher, so you should
+ * only use this {@link #onLowMemory} method as a fallback for older versions, which can be
+ * treated the same as {@link ComponentCallbacks2#onTrimMemory} with the {@link
+ * ComponentCallbacks2#TRIM_MEMORY_COMPLETE} level.</p>
+ */
+ void onLowMemory();
+}
