Java tutorial
/******************************************************************************* * Copyright 2015 ShopGun * * 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 com.shopgun.android.utils.lifecycle; import android.app.Activity; import android.content.Context; import android.content.res.Configuration; import android.os.Bundle; import android.support.v4.app.Fragment; import android.util.AttributeSet; import android.util.Log; import android.view.ContextMenu; import android.view.ContextMenu.ContextMenuInfo; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; public class LifecycleFragmentv4 extends Fragment { public static final String TAG = LifecycleFragmentv4.class.getSimpleName(); /** * Allows printLifecycleEvent() to print ALL life cycle events */ private boolean mPrintLifecycle = true; /** * Allows printMenuEvent() to print ALL menu events */ private boolean mPrintMenu = false; /** * Allows printOtherEvent() to print ALL other events (other than life cycle and menu) */ private boolean mPrintOther = false; /* * ######################################################################## * * Miscellaneous * * ######################################################################## */ @Override public void onConfigurationChanged(Configuration newConfig) { printMethod(mPrintOther); super.onConfigurationChanged(newConfig); } @Override public void onHiddenChanged(boolean hidden) { printMethod(mPrintOther); super.onHiddenChanged(hidden); } @Override public void onLowMemory() { printMethod(mPrintOther); super.onLowMemory(); } /* * ######################################################################## * * Menu's * * ######################################################################## */ @Override public boolean onOptionsItemSelected(MenuItem item) { printMethod(mPrintMenu); return super.onOptionsItemSelected(item); } @Override public void onOptionsMenuClosed(Menu menu) { printMethod(mPrintMenu); super.onOptionsMenuClosed(menu); } @Override public void onDestroyOptionsMenu() { printMethod(mPrintMenu); super.onDestroyOptionsMenu(); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { printMethod(mPrintMenu); super.onCreateContextMenu(menu, v, menuInfo); } @Override public boolean onContextItemSelected(MenuItem item) { printMethod(mPrintMenu); return super.onContextItemSelected(item); } /* * ######################################################################## * * Lifecycle * * ######################################################################## */ @Override public void onInflate(Activity activity, AttributeSet attrs, Bundle savedInstanceState) { printMethod(mPrintLifecycle); super.onInflate(activity, attrs, savedInstanceState); } @Override public void onInflate(Context context, AttributeSet attrs, Bundle savedInstanceState) { printMethod(mPrintLifecycle); super.onInflate(context, attrs, savedInstanceState); } @Override public void onAttach(Activity activity) { printMethod(mPrintLifecycle); super.onAttach(activity); } @Override public void onAttach(Context context) { printMethod(mPrintLifecycle); super.onAttach(context); } @Override public void onCreate(Bundle savedInstanceState) { printMethod(mPrintLifecycle); super.onCreate(savedInstanceState); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { printMethod(mPrintLifecycle); return super.onCreateView(inflater, container, savedInstanceState); } @Override public void onViewCreated(View view, Bundle savedInstanceState) { printMethod(mPrintLifecycle); super.onViewCreated(view, savedInstanceState); } @Override public void onActivityCreated(Bundle savedInstanceState) { printMethod(mPrintLifecycle); super.onActivityCreated(savedInstanceState); } @Override public void onViewStateRestored(Bundle savedInstanceState) { printMethod(mPrintLifecycle); super.onViewStateRestored(savedInstanceState); } @Override public void onStart() { printMethod(mPrintLifecycle); super.onStart(); } @Override public void onResume() { printMethod(mPrintLifecycle); super.onResume(); } @Override public void onPrepareOptionsMenu(Menu menu) { super.onPrepareOptionsMenu(menu); printMethod(mPrintLifecycle || mPrintMenu); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { printMethod(mPrintLifecycle || mPrintMenu); super.onCreateOptionsMenu(menu, inflater); } @Override public void onPause() { printMethod(mPrintLifecycle); super.onPause(); } @Override public void onSaveInstanceState(Bundle outState) { printMethod(mPrintLifecycle); super.onSaveInstanceState(outState); } @Override public void onStop() { printMethod(mPrintLifecycle); super.onStop(); } @Override public void onDestroyView() { printMethod(mPrintLifecycle); super.onDestroyView(); } @Override public void onDetach() { printMethod(mPrintLifecycle); super.onDetach(); } @Override public void onDestroy() { printMethod(mPrintLifecycle); super.onDestroy(); } protected void printMethod(boolean print) { if (print) { StackTraceElement ste = Thread.currentThread().getStackTrace()[3]; // String text = ste.getMethodName() + "(" + ste.getFileName() + ":" + ste.getLineNumber() + ")"; Log.d(getClass().getSimpleName(), ste.getMethodName()); } } }