Java tutorial
/* * Copyright 2012 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.pld.h4414.sportify; import android.app.ActionBar; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.AsyncTask; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.view.ViewPager; import android.app.FragmentTransaction; import android.os.Bundle; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; import com.google.android.gms.maps.SupportMapFragment; import java.io.InputStream; public class ViewPagerActivity extends FragmentActivity implements ActionBar.TabListener, ViewPager.OnPageChangeListener { /** * The {@link android.support.v4.view.PagerAdapter} that will provide fragments for each of the * three primary sections of the app. We use a {@link android.support.v4.app.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.v4.app.FragmentStatePagerAdapter}. */ AppSectionsPagerAdapter mAppSectionsPagerAdapter; /** * The {@link ViewPager} that will display the three primary sections of the app, one at a * time. */ ViewPager mViewPager; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_view_pager); // Create the adapter that will return a fragment for each of the three primary sections // of the app. mAppSectionsPagerAdapter = new AppSectionsPagerAdapter(getSupportFragmentManager()); // Set up the action bar. final ActionBar actionBar = getActionBar(); // Specify that the Home/Up buttonProfile should not be enabled, since there is no hierarchical // parent. actionBar.setHomeButtonEnabled(false); // Specify that we will be displaying tabs in the action bar. actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); // Set up the ViewPager, attaching the adapter and setting up a listener for when the // user swipes between sections. mViewPager = (ViewPager) findViewById(R.id.pager); mViewPager.setAdapter(mAppSectionsPagerAdapter); mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() { @Override public void onPageSelected(int position) { // When swiping between different app sections, select the corresponding tab. // We can also use ActionBar.Tab#select() to do this if we have a reference to the // Tab. actionBar.setSelectedNavigationItem(position); } }); // For each of the sections in the app, add a tab to the action bar. for (int i = 0; i < mAppSectionsPagerAdapter.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 // listener for when this tab is selected. actionBar.addTab( actionBar.newTab().setIcon(mAppSectionsPagerAdapter.getPageIcon(i)).setTabListener(this)); } /* That will be used for v2 or next FloatingActionButton fabButton = new FloatingActionButton.Builder(this) .withDrawable(getResources().getDrawable(R.drawable.ic_add)) .withButtonColor(Color.WHITE) .withGravity(Gravity.BOTTOM | Gravity.RIGHT) .withMargins(0, 0, 16, 16) .create(); */ } @Override public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } @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 onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { } @Override public void onPageSelected(int position) { } @Override public void onPageScrollStateChanged(int state) { } /** * A {@link FragmentPagerAdapter} that returns a fragment corresponding to one of the primary * sections of the app. */ public static class AppSectionsPagerAdapter extends FragmentPagerAdapter { public AppSectionsPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int i) { switch (i) { case 0: // return new GmapsFragment(); GmapsFragment mapFragment = new GmapsFragment(); return mapFragment.newInstance(); case 1: return new SportifyActionFragment(); case 2: return new FriendsFragment(); case 3: return new UserFragment(); default: return new UserFragment(); } } @Override public int getCount() { return 4; } @Override public CharSequence getPageTitle(int position) { return "Section " + (position + 1); } public int getPageIcon(int position) { switch (position) { case 0: return R.drawable.ic_sportify; case 1: return R.drawable.ic_add; case 2: return R.drawable.ic_friends; case 3: return R.drawable.ic_user; default: return R.drawable.ic_sportify; } } } /** * You can create here a gmaps fragment following the dummy fragment model */ public static class GmapsFragment extends SupportMapFragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_gmaps, container, false); //the following part can be useful to navigate between the two modes (list and maps) /* // Demonstration of navigating to external activities. rootView.findViewById(R.id.demo_external_activity) .setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { // Create an intent that asks the user to pick a photo, but using // FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, ensures that relaunching // the application from the device home screen does not return // to the external activity. Intent externalActivityIntent = new Intent(Intent.ACTION_PICK); externalActivityIntent.setType("image/*"); externalActivityIntent.addFlags( Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); startActivity(externalActivityIntent); } });*/ return rootView; } } /** * A dummy fragment representing a section of the app, but that simply displays dummy text. */ public static class UserFragment extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.activity_user_profile, container, false); // Here retrieve the photo and the name of the user if he's connected Intent intent = getActivity().getIntent(); if (intent.getBooleanExtra("validPerson", false)) { String first_name = intent.getStringExtra("givenName"); String family_name = intent.getStringExtra("familyName"); String imgUrl = intent.getStringExtra("urlImage"); // show his sports in the gridview new DownloadImageTask((ImageView) rootView.findViewById(R.id.imageView)).execute(imgUrl); TextView text_name = (TextView) rootView.findViewById(R.id.name); text_name.setText(first_name + " " + family_name); } else { ((TextView) rootView.findViewById(R.id.name)).setText("no user"); } return rootView; } private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> { ImageView bmImage; public DownloadImageTask(ImageView bmImage) { this.bmImage = bmImage; } protected Bitmap doInBackground(String... urls) { String urldisplay = urls[0]; Bitmap mIcon11 = null; try { InputStream in = new java.net.URL(urldisplay).openStream(); mIcon11 = BitmapFactory.decodeStream(in); } catch (Exception e) { Log.e("Error", e.getMessage()); e.printStackTrace(); } return mIcon11; } protected void onPostExecute(Bitmap result) { bmImage.setImageBitmap(result); } } } /** * A fragment showing the principal action buttons of the app */ public static class SportifyActionFragment extends Fragment { @Override public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { final View rootView = inflater.inflate(R.layout.fragment_sportify_action, container, false); View createButton = rootView.findViewById(R.id.createEventButton); /* //create animation for adding the buttons LayoutTransition showButtons = new LayoutTransition(); ObjectAnimator anim = ObjectAnimator.ofFloat(createButton, "rotation", 0, 90); anim.setDuration(6000); showButtons.setAnimator(LayoutTransition.CHANGE_APPEARING, anim); container.setLayoutTransition(showButtons);*/ //click listener of the buttons createButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { /* AnimatorSet buttonSet = (AnimatorSet) AnimatorInflater.loadAnimator(getActivity(), R.animator.fab_animation); buttonSet.setTarget(view); buttonSet.start();*/ //transition to another activity here Intent oldIntent = getActivity().getIntent(); String email = oldIntent.getStringExtra("email"); Intent intent = new Intent(getActivity(), ModalCreateActivity.class); intent.putExtra("email", email); startActivity(intent); } }); rootView.findViewById(R.id.joinEventButton).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { //transition to another activity here Intent intent = new Intent(getActivity(), ModalFilterActivity.class); startActivity(intent); } }); return rootView; } } /** * A fragment showing the friends section */ public static class FriendsFragment extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_friends, container, false); //click listener of the buttons /*rootView.findViewById(R.id.demo_external_activity) .setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { } });*/ return rootView; } } }