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Android example source code file (Application.java)

This example Android source code file (Application.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, application, componentcallbacks, content, contextwrapper

The Application.java Android example source code

/*
 * 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.app;

import android.content.ComponentCallbacks;
import android.content.Context;
import android.content.ContextWrapper;
import android.content.res.Configuration;

/**
 * Base class for those who need to maintain global application state. You can
 * provide your own implementation by specifying its name in your
 * AndroidManifest.xml's <application> tag, which will cause that class
 * to be instantiated for you when the process for your application/package is
 * created.
 */
public class Application extends ContextWrapper implements ComponentCallbacks {
    
    public Application() {
        super(null);
    }

    /**
     * Called when the application is starting, before any other application
     * objects have been created.  Implementations should be as quick as
     * possible (for example using lazy initialization of state) since the time
     * spent in this function directly impacts the performance of starting the
     * first activity, service, or receiver in a process.
     * If you override this method, be sure to call super.onCreate().
     */
    public void onCreate() {
    }

    /**
     * Called when the application is stopping.  There are no more application
     * objects running and the process will exit.  <em>Note: never depend on
     * this method being called; in many cases an unneeded application process
     * will simply be killed by the kernel without executing any application
     * code.</em>
     * If you override this method, be sure to call super.onTerminate().
     */
    public void onTerminate() {
    }
    
    public void onConfigurationChanged(Configuration newConfig) {
    }
    
    public void onLowMemory() {
    }
    
    // ------------------ Internal API ------------------
    
    /**
     * @hide
     */
    /* package */ final void attach(Context context) {
        attachBaseContext(context);
    }

}

Other Android examples (source code examples)

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