Java tutorial
/* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this file, * You can obtain one at http://mozilla.org/MPL/2.0/. */ package org.mozilla.gecko; import android.content.ComponentName; import android.content.Intent; import android.support.v4.app.FragmentActivity; public class GeckoActivity extends FragmentActivity implements GeckoActivityStatus { // has this activity recently started another Gecko activity? private boolean mGeckoActivityOpened; /** * Display any resources that show strings or encompass locale-specific * representations. * * onLocaleReady must always be called on the UI thread. */ public void onLocaleReady(final String locale) { } @Override public void onPause() { super.onPause(); if (getApplication() instanceof GeckoApplication) { ((GeckoApplication) getApplication()).onActivityPause(this); } } @Override public void onResume() { super.onResume(); if (getApplication() instanceof GeckoApplication) { ((GeckoApplication) getApplication()).onActivityResume(this); mGeckoActivityOpened = false; } } @Override public void onCreate(android.os.Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (AppConstants.MOZ_ANDROID_ANR_REPORTER) { ANRReporter.register(getApplicationContext()); } } @Override public void onDestroy() { if (AppConstants.MOZ_ANDROID_ANR_REPORTER) { ANRReporter.unregister(); } super.onDestroy(); } @Override public void startActivity(Intent intent) { mGeckoActivityOpened = checkIfGeckoActivity(intent); super.startActivity(intent); } @Override public void startActivityForResult(Intent intent, int request) { mGeckoActivityOpened = checkIfGeckoActivity(intent); super.startActivityForResult(intent, request); } private static boolean checkIfGeckoActivity(Intent intent) { // Whenever we call our own activity, the component and its package name is set. // If we call an activity from another package, or an open intent (leaving android to resolve) // component has a different package name or it is null. ComponentName component = intent.getComponent(); return (component != null && AppConstants.ANDROID_PACKAGE_NAME.equals(component.getPackageName())); } @Override public boolean isGeckoActivityOpened() { return mGeckoActivityOpened; } public boolean isApplicationInBackground() { return ((GeckoApplication) getApplication()).isApplicationInBackground(); } @Override public void onLowMemory() { MemoryMonitor.getInstance().onLowMemory(); super.onLowMemory(); } @Override public void onTrimMemory(int level) { MemoryMonitor.getInstance().onTrimMemory(level); super.onTrimMemory(level); } }