Java tutorial
/* * Copyright (C) 2014 - Gareth Llewellyn * * This file is part of AnOnionooid - https://networksaremadeofstring.com/anonionooid/ * * This program is free software: you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see <http://www.gnu.org/licenses/> */ package com.networksaremadeofstring.anonionooid; import java.util.Locale; import android.app.Activity; import android.app.ActionBar; import android.app.Fragment; import android.app.FragmentManager; import android.app.FragmentTransaction; import android.content.Context; import android.content.Intent; import android.os.AsyncTask; import android.support.v13.app.FragmentPagerAdapter; import android.os.Bundle; import android.support.v4.view.ViewPager; import android.view.Gravity; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; import android.widget.Toast; import com.networksaremadeofstring.anonionooid.API.Ooo; import com.networksaremadeofstring.anonionooid.API.Relay; import com.networksaremadeofstring.anonionooid.R; import com.networksaremadeofstring.anonionooid.cache.LocalCache; public class RelayDetailsSwipe extends Activity implements ActionBar.TabListener { /** * The {@link android.support.v4.view.PagerAdapter} that will provide * fragments for each of the sections. We use a * {@link FragmentPagerAdapter} derivative, which will keep every * loaded fragment in memory. If this becomes too memory intensive, it * may be best to switch to a * {@link android.support.v13.app.FragmentStatePagerAdapter}. */ SectionsPagerAdapter mSectionsPagerAdapter; Bundle arguments; Context mContext; LocalCache lc = null; boolean isFavourite = false; MenuItem favourite; /** * The {@link ViewPager} that will host the section contents. */ ViewPager mViewPager; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_relay_details_swipe); // Set up the action bar. final ActionBar actionBar = getActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); mContext = this; if (null == lc) lc = new LocalCache(mContext); lc.open(); isFavourite = lc.isAFavourite(getIntent().getStringExtra(Ooo.ARG_ITEM_ID)); lc.close(); // Show the Up button in the action bar. actionBar.setDisplayHomeAsUpEnabled(true); actionBar.setIcon(R.drawable.ab_icon); try { //fingerprint = actionBar.setSubtitle(getIntent().getStringExtra(Ooo.ARG_ITEM_ID)); } catch (Exception e) { e.printStackTrace(); } if (savedInstanceState == null) { // Create the detail fragment and add it to the activity // using a fragment transaction. arguments = new Bundle(); arguments.putString(Ooo.ARG_ITEM_ID, getIntent().getStringExtra(Ooo.ARG_ITEM_ID)); /*RelayDetailFragment fragment = new RelayDetailFragment(); fragment.setArguments(arguments); getFragmentManager().beginTransaction() .add(R.id.relay_detail_container, fragment) .commit();*/ } // Create the adapter that will return a fragment for each of the three // primary sections of the activity. mSectionsPagerAdapter = new SectionsPagerAdapter(getFragmentManager()); // Set up the ViewPager with the sections adapter. mViewPager = (ViewPager) findViewById(R.id.pager); mViewPager.setAdapter(mSectionsPagerAdapter); // When swiping between different sections, select the corresponding // tab. We can also use ActionBar.Tab#select() to do this if we have // a reference to the Tab. mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() { @Override public void onPageSelected(int position) { actionBar.setSelectedNavigationItem(position); } }); // For each of the sections in the app, add a tab to the action bar. for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) { // Create a tab with text corresponding to the page title defined by // the adapter. Also specify this Activity object, which implements // the TabListener interface, as the callback (listener) for when // this tab is selected. actionBar .addTab(actionBar.newTab().setText(mSectionsPagerAdapter.getPageTitle(i)).setTabListener(this)); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.relay_details_swipe, menu); favourite = menu.findItem(R.id.action_favorite); if (isFavourite) favourite.setIcon(getResources().getDrawable(R.drawable.ic_favourite_solid)); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == android.R.id.home) { // This ID represents the Home or Up button. In the case of this // activity, the Up button is shown. For // more details, see the Navigation pattern on Android Design: // // http://developer.android.com/design/patterns/navigation.html#up-vs-back // navigateUpTo(new Intent(this, RelayListActivity.class)); return true; } else if (id == R.id.action_favorite) { new AsyncTask<Void, Void, Boolean>() { @Override protected Boolean doInBackground(Void... params) { try { if (null == lc) lc = new LocalCache(mContext); lc.open(); boolean result; if (isFavourite) { result = lc.removeFavRelay(getIntent().getStringExtra(Ooo.ARG_ITEM_ID)); } else { result = lc.addFavRelay(getIntent().getStringExtra(Ooo.ARG_ITEM_ID), getIntent().getStringExtra(Ooo.ARG_relay_nickname)); } lc.close(); return result; } catch (Exception e) { e.printStackTrace(); if (null != lc) lc.close(); return false; } } @Override protected void onPostExecute(Boolean success) { if (success) { if (isFavourite) { Toast.makeText(mContext, getString(R.string.favResultRemoveSuccess), Toast.LENGTH_SHORT) .show(); favourite.setIcon(getResources().getDrawable(R.drawable.ic_favourite)); isFavourite = false; } else { Toast.makeText(mContext, getString(R.string.favResultAddSuccess), Toast.LENGTH_SHORT) .show(); favourite.setIcon(getResources().getDrawable(R.drawable.ic_favourite_solid)); } } else { if (isFavourite) { Toast.makeText(mContext, getString(R.string.favResultRemoveFailure), Toast.LENGTH_SHORT) .show(); } else { Toast.makeText(mContext, getString(R.string.favResultAddFailure), Toast.LENGTH_SHORT) .show(); } } } }.execute(null, null, null); } return super.onOptionsItemSelected(item); } @Override protected void onResume() { super.onResume(); /*if(isFavourite) favourite.setIcon(getResources().getDrawable(R.drawable.ic_favourite_solid));*/ } @Override public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { // When the given tab is selected, switch to the corresponding page in // the ViewPager. mViewPager.setCurrentItem(tab.getPosition()); } @Override public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } @Override public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } /** * A {@link FragmentPagerAdapter} that returns a fragment corresponding to * one of the sections/tabs/pages. */ public class SectionsPagerAdapter extends FragmentPagerAdapter { public SectionsPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int position) { // getItem is called to instantiate the fragment for the given page. // Return a PlaceholderFragment (defined as a static inner class below). //return PlaceholderFragment.newInstance(position + 1); Fragment getFragment = null; switch (position) { case 0: { getFragment = new RelayGeneralDetailsFragment(); } break; case 1: { getFragment = new RelayMetaDetailsFragment(); } break; case 2: { getFragment = new RelayGraphDetailsFragment(); } break; } getFragment.setArguments(arguments); return getFragment; } @Override public int getCount() { // Show 3 total pages. return 3; } @Override public CharSequence getPageTitle(int position) { Locale l = Locale.getDefault(); switch (position) { case 0: return getString(R.string.title_section1).toUpperCase(l); case 1: return getString(R.string.title_section2).toUpperCase(l); case 2: return getString(R.string.title_section3).toUpperCase(l); } return null; } } /** * A placeholder fragment containing a simple view. */ public static class PlaceholderFragment extends Fragment { /** * The fragment argument representing the section number for this * fragment. */ private static final String ARG_SECTION_NUMBER = "section_number"; /** * Returns a new instance of this fragment for the given section * number. */ public static PlaceholderFragment newInstance(int sectionNumber) { PlaceholderFragment fragment = new PlaceholderFragment(); Bundle args = new Bundle(); args.putInt(ARG_SECTION_NUMBER, sectionNumber); fragment.setArguments(args); return fragment; } public PlaceholderFragment() { } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_relay_details_swipe, container, false); return rootView; } } }