Java tutorial
/* * Copyright (C) 2013 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 com.eugene.fithealthmaingit; import android.content.DialogInterface; import android.content.Intent; import android.graphics.Typeface; import android.os.Bundle; import android.os.Handler; import android.preference.PreferenceManager; import android.support.design.widget.NavigationView; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.text.Spannable; import android.text.SpannableString; import android.view.Menu; import android.view.MenuItem; import android.view.SubMenu; import android.view.View; import android.widget.ArrayAdapter; import android.widget.TextView; import com.eugene.fithealthmaingit.CalTesting.CalendarTesting; import com.eugene.fithealthmaingit.Custom.CustomTypefaceSpan; import com.eugene.fithealthmaingit.HomeScreenWidget.FitHealthWidget; import com.eugene.fithealthmaingit.UI.ChooseAddMealActivity; import com.eugene.fithealthmaingit.UI.Dialogs.FragmentSuggestionDialog; import com.eugene.fithealthmaingit.UI.Dialogs.UpdateWeightDialogFragment; import com.eugene.fithealthmaingit.UI.MealView.MealViewActivity; import com.eugene.fithealthmaingit.UI.NavFragments.FragmentBlankLoading; import com.eugene.fithealthmaingit.UI.NavFragments.FragmentFitbit; import com.eugene.fithealthmaingit.UI.NavFragments.FragmentHealth; import com.eugene.fithealthmaingit.UI.NavFragments.FragmentJournalMainHome; import com.eugene.fithealthmaingit.UI.NavFragments.FragmentNutritionPager; import com.eugene.fithealthmaingit.UI.NavFragments.FragmentSearch; import com.eugene.fithealthmaingit.UI.NavFragments.FragmentWeight; import com.eugene.fithealthmaingit.UI.QuickAddActivity; import com.eugene.fithealthmaingit.UI.UserInformationActivity; import com.eugene.fithealthmaingit.Utilities.Globals; import java.util.Date; public class MainActivity extends AppCompatActivity implements FragmentJournalMainHome.FragmentCallbacks, FragmentNutritionPager.FragmentCallbacks, FragmentWeight.FragmentCallbacks, FragmentHealth.FragmentCallbacks, UpdateWeightDialogFragment.FragmentCallbacks, FragmentFitbit.FragmentCallbacks { private DrawerLayout mNavigationDrawer; private Fragment fragment; public static final String NAV_ITEM_ID = "navItemId"; private int mNavItemId; private static final String FIRST_FRAGMENT_ADDED = "is_first_fragment_added"; private boolean isFirstFragmentAdded = false; private static String FRAGMENT_TAG = ""; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if (savedInstanceState != null) { mNavItemId = savedInstanceState.getInt(NAV_ITEM_ID); isFirstFragmentAdded = savedInstanceState.getBoolean(FIRST_FRAGMENT_ADDED); } else { mNavItemId = R.id.nav_journal; } mNavigationDrawer = (DrawerLayout) findViewById(R.id.drawer_layout); // Set menu header text to User Name TextView mHeaderText = (TextView) findViewById(R.id.txtName); mHeaderText.setText(PreferenceManager.getDefaultSharedPreferences(this).getString(Globals.USER_NAME, "")); /** * Initiate NavigationView * Inflate Menu based on FitBit connection status */ NavigationView mNavigationView = (NavigationView) findViewById(R.id.nav); if (PreferenceManager.getDefaultSharedPreferences(this).getString("FITBIT_ACCESS_TOKEN", "").equals("")) { mNavigationView.inflateMenu(R.menu.drawer); } else { mNavigationView.inflateMenu(R.menu.drawer_fitbit); } mNavigationView.getMenu().findItem(mNavItemId).setChecked(true); mNavigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() { @Override public boolean onNavigationItemSelected(MenuItem menuItem) { if (menuItem.getItemId() != R.id.nav_settings) { mNavItemId = menuItem.getItemId(); switchFragment(menuItem.getItemId()); menuItem.setChecked(true); Fragment loading = new FragmentBlankLoading(); Bundle b = new Bundle(); b.putInt(NAV_ITEM_ID, mNavItemId); loading.setArguments(b); getSupportFragmentManager().beginTransaction().replace(R.id.container, loading).commit(); } else { startActivity(new Intent(MainActivity.this, UserInformationActivity.class)); } handleNavigationDrawer(); return false; } }); // Nav Menu Fonts Menu m = mNavigationView.getMenu(); for (int i = 0; i < m.size(); i++) { MenuItem mi = m.getItem(i); //for aapplying a font to subMenu ... SubMenu subMenu = mi.getSubMenu(); if (subMenu != null && subMenu.size() > 0) { for (int j = 0; j < subMenu.size(); j++) { MenuItem subMenuItem = subMenu.getItem(j); applyFontToMenuItem(subMenuItem); } } //the method we have create in activity applyFontToMenuItem(mi); } switchFragment(mNavItemId); /** * Handles Home Screen Widget * Search and Add */ Intent widgetIntent = this.getIntent(); if (widgetIntent != null) { if (widgetIntent.getAction() != null && savedInstanceState == null) { if (widgetIntent.getAction().equals(FitHealthWidget.ACTION_SEARCH)) { // Post delay to allow the app to open and not interfere with animation final Handler handler = new Handler(); handler.postDelayed(new Runnable() { @Override public void run() { getSupportFragmentManager().beginTransaction() .replace(R.id.containerSearch, new FragmentSearch()).addToBackStack(null) .commit(); } }, 100); } if (widgetIntent.getAction().equals(FitHealthWidget.ACTION_ADD)) { widgetAdd(); } } } } // Set Nav Menu Fonts private void applyFontToMenuItem(MenuItem mi) { Typeface font = Typeface.createFromAsset(getAssets(), "fonts/Roboto-Regular.ttf"); SpannableString mNewTitle = new SpannableString(mi.getTitle()); mNewTitle.setSpan(new CustomTypefaceSpan("", font), 0, mNewTitle.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE); mi.setTitle(mNewTitle); } /** * Handles Navigation Logic */ private void switchFragment(int menuId) { switch (menuId) { case R.id.nav_journal: fragment = new FragmentJournalMainHome(); FRAGMENT_TAG = "JOURNAL"; break; case R.id.nav_nutrition: fragment = new FragmentNutritionPager(); FRAGMENT_TAG = "NUTRITION"; break; case R.id.nav_weight: fragment = new FragmentWeight(); FRAGMENT_TAG = "WEIGHT"; break; case R.id.nav_health: fragment = new FragmentHealth(); FRAGMENT_TAG = "HEALTH"; break; case R.id.nav_fitbit: fragment = new FragmentFitbit(); FRAGMENT_TAG = "FITBIT"; break; default: break; } if (fragment != null && !isFirstFragmentAdded) { getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment, FRAGMENT_TAG).commit(); isFirstFragmentAdded = true; } if (mNavigationDrawer != null) mNavigationDrawer.setDrawerListener(new DrawerLayout.DrawerListener() { @Override public void onDrawerClosed(View drawerView) { // Check to see if fragment is NUTRITION, has child fragments. if (fragment != null && isFirstFragmentAdded && getSupportFragmentManager().findFragmentByTag("NUTRITION") == null) { getSupportFragmentManager().beginTransaction() .replace(R.id.container, fragment, FRAGMENT_TAG).commit(); isFirstFragmentAdded = true; } } @Override public void onDrawerSlide(View drawerView, float slideOffset) { } @Override public void onDrawerOpened(View drawerView) { } @Override public void onDrawerStateChanged(int newState) { } }); } /** * Interface within all of the fragments controlled by MainActivityController * Menu icon click within the fragments toolbar * Opens navigation drawer */ @Override public void openNavigationDrawer() { handleNavigationDrawer(); } /** * Fragment Journal Main Home Listeners */ /** * Interface within FragmentJournalMainHome * Opens Quick add activity * * @param mealType (snack, breakfast, lunch, dinner) */ @Override public void openQuickAdd(String mealType) { Intent i = new Intent(this, QuickAddActivity.class); i.putExtra(Globals.MEAL_TYPE, mealType); startActivity(i); overridePendingTransition(0, 0); } /** * Interface within FragmentJournalMainHome * Opens MealViewActivity * List onItemClickListener * * @param mId selected meal Id * @param MealType (snack, breakfast, lunch, dinner) * @param position current item selected position * @param d date the item was added */ @Override public void viewMeal(int mId, String MealType, int position, Date d) { Intent i = new Intent(this, MealViewActivity.class); i.putExtra(Globals.DATA_ID, mId); i.putExtra(Globals.MEAL_TYPE, MealType); i.putExtra(Globals.MEAL_POSITION, position); i.putExtra(Globals.MEAL_DATE, d); startActivity(i); overridePendingTransition(0, 0); } /** * Interface within FragmentJournalMainHome * Open suggestion FragmentSuggestionDialog * * @param mealType (snack, breakfast, lunch, dinner) * @param d current date of the fragment */ @Override public void viewSuggestion(String mealType, Date d) { FragmentManager fm = getSupportFragmentManager(); FragmentSuggestionDialog suggestionFragment = new FragmentSuggestionDialog(); Bundle bundle = new Bundle(); bundle.putString(Globals.MEAL_TYPE, mealType); bundle.putSerializable(Globals.SUGGESTION_DATE, d); suggestionFragment.setArguments(bundle); suggestionFragment.show(fm, FragmentSuggestionDialog.TAG); } /** * Interface within FragmentJournalMainHome * Opens FragmentSearch * Search icon menu Item click, quick search to speed up adding meal entries */ @Override public void searchFragment() { getSupportFragmentManager().beginTransaction().replace(R.id.containerSearch, new FragmentSearch()) .addToBackStack(null).commit(); } public static final int ACTIVITY_ONE_REQUEST = 1; // The request code for ActivityOne public final static String ACTIVITY_ONE_RESULT = "activity_one"; // Data Argument For Activity One @Override public void openCal() { Intent activityOne = new Intent(this, CalendarTesting.class); startActivityForResult(activityOne, ACTIVITY_ONE_REQUEST); } @Override protected void onSaveInstanceState(final Bundle outState) { super.onSaveInstanceState(outState); outState.putInt(NAV_ITEM_ID, mNavItemId); outState.putBoolean(FIRST_FRAGMENT_ADDED, isFirstFragmentAdded); } /** * Used to handle the closing and opening of the Navigation Drawer. * Prevent repetitive statements */ private void handleNavigationDrawer() { if (mNavigationDrawer != null) { if (mNavigationDrawer.isDrawerOpen(GravityCompat.START)) { mNavigationDrawer.closeDrawer(GravityCompat.START); } else { mNavigationDrawer.openDrawer(GravityCompat.START); } } } /** * Interface within UpdateWeightDialogFragment * Restarts FragmentWeight to refresh the new new weight saved * Easier to recall fragment, rather than */ @Override public void updateWeight() { getSupportFragmentManager().beginTransaction().replace(R.id.container, new FragmentWeight(), "WEIGHT") .commit(); } /** * Initiate FitBit * * @param s calories burned */ public void FitBitCaloriesBurned(String s) { FragmentJournalMainHome fragmentMain = (FragmentJournalMainHome) getSupportFragmentManager() .findFragmentByTag("JOURNAL"); if (fragmentMain != null) { fragmentMain.FitBit(s); } } public void FitBitLoading() { FragmentJournalMainHome fragmentMain = (FragmentJournalMainHome) getSupportFragmentManager() .findFragmentByTag("JOURNAL"); if (fragmentMain != null) { fragmentMain.FitBitLoading(); } } private void widgetAdd() { AlertDialog.Builder builderSingle = new AlertDialog.Builder(MainActivity.this).setTitle("Choose Meal: "); final ArrayAdapter<String> mAdapterMoveMeal = new ArrayAdapter<>(MainActivity.this, android.R.layout.simple_list_item_1); mAdapterMoveMeal.add("Snack"); mAdapterMoveMeal.add("Breakfast"); mAdapterMoveMeal.add("Lunch"); mAdapterMoveMeal.add("Dinner"); builderSingle.setNegativeButton("cancel", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); builderSingle.setAdapter(mAdapterMoveMeal, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { String strName = mAdapterMoveMeal.getItem(which); Intent i = new Intent(MainActivity.this, ChooseAddMealActivity.class); i.putExtra(Globals.MEAL_TYPE, strName); startActivity(i); } }); builderSingle.show(); } /** * Get the Results from the Other Activities * * @param requestCode In this case either 1 = ACTIVITY_ONE_REQUEST or 2 = ACTIVITY_TWO_REQUEST * @param resultCode Determines whether the request was successful. * @param data The being sent from other activities via Intent */ @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == ACTIVITY_ONE_REQUEST && resultCode == RESULT_OK) { if (data.hasExtra(ACTIVITY_ONE_RESULT)) { Date result = (Date) data.getExtras().get(ACTIVITY_ONE_RESULT); Fragment fragmentJournalMainHome = new FragmentJournalMainHome(); Bundle bundle = new Bundle(); bundle.putSerializable("DATE", result); fragmentJournalMainHome.setArguments(bundle); if (fragmentJournalMainHome != null && result != new Date()) getSupportFragmentManager().beginTransaction() .replace(R.id.container, fragmentJournalMainHome, "JOURNAL").commitAllowingStateLoss(); } } } }