Java tutorial
/* * Instincts 2k17 * Copyright (C) 2017 Adithya J * * 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.pimp.instincts.activities; import android.content.ActivityNotFoundException; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.support.design.widget.TabLayout; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.view.ViewPager; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import com.pimp.instincts.R; public class AboutActivity extends AppCompatActivity { private SectionsPagerAdapter mSectionsPagerAdapter; private ViewPager mViewPager; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_about); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); toolbar.setTitle("About"); setSupportActionBar(toolbar); getSupportActionBar().setDisplayHomeAsUpEnabled(true); mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager()); mViewPager = (ViewPager) findViewById(R.id.container); mViewPager.setAdapter(mSectionsPagerAdapter); TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs); tabLayout.setupWithViewPager(mViewPager); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_about, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: onBackPressed(); break; case R.id.action_twitter: Intent browserIntent1 = new Intent(Intent.ACTION_VIEW, Uri.parse("https://twitter.com/ssn_instincts")); startActivity(browserIntent1); break; case R.id.action_facebook: Uri uri1 = Uri.parse("https://www.facebook.com/instincts.ssn"); try { this.getPackageManager().getPackageInfo("com.facebook.katana", 0); startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("fb://facewebmodal/f?href=" + uri1))); } catch (Exception e) { startActivity(new Intent(Intent.ACTION_VIEW, uri1)); } break; case R.id.action_instagram: Uri uri2 = Uri.parse("http://instagram.com/_u/ssninstincts"); try { Intent intent = new Intent(Intent.ACTION_VIEW, uri2); intent.setPackage("com.instagram.android"); startActivity(intent); } catch (ActivityNotFoundException e) { startActivity(new Intent(Intent.ACTION_VIEW, uri2)); } break; } return super.onOptionsItemSelected(item); } public static class PlaceholderFragment extends Fragment { private static final String ARG_SECTION_NUMBER = "section_number"; public PlaceholderFragment() { } 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; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView; switch (getArguments().getInt(ARG_SECTION_NUMBER)) { case 0: rootView = inflater.inflate(R.layout.fragment_our_team, container, false); break; case 1: rootView = inflater.inflate(R.layout.fragment_about_instincts, container, false); break; case 2: rootView = inflater.inflate(R.layout.fragment_committees, container, false); break; case 3: rootView = inflater.inflate(R.layout.fragment_about_ssn, container, false); break; default: rootView = inflater.inflate(R.layout.fragment_about_instincts, container, false); } return rootView; } } public class SectionsPagerAdapter extends FragmentPagerAdapter { public SectionsPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int position) { return PlaceholderFragment.newInstance(position); } @Override public int getCount() { return 4; } @Override public CharSequence getPageTitle(int position) { switch (position) { case 0: return "OUR TEAM"; case 1: return "INSTINCTS"; case 2: return "COMMITTEES"; case 3: return "SSN"; } return null; } } }