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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:45 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:45 -0800
commitd83a98f4ce9cfa908f5c54bbd70f03eec07e7553 (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /core/java/android/content/ComponentCallbacks.java
parent076357b8567458d4b6dfdcf839ef751634cd2bfb (diff)
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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.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}).
- */
-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.
- *
- * @param newConfig The new device configuration.
- */
- void onConfigurationChanged(Configuration newConfig);
-
- /**
- * This is called when the overall system is running low on memory, and
- * would like actively running process to try to tighten their belt. While
- * the exact point at which this will be called is not defined, generally
- * it will happen around the time 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>Applications that want to be nice can implement this method to release
- * any caches or other unnecessary resources they may be holding on to.
- * The system will perform a gc for you after returning from this method.
- */
- void onLowMemory();
-}