Java tutorial
/* * Copyright 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 gr.ellak.ma.emergencyroad; import android.graphics.Color; import android.os.Bundle; 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.ActionBarActivity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import java.util.ArrayList; import java.util.List; public class SlidingTabsColorsFragment extends Fragment { static class SamplePagerItem { private final CharSequence mTitle; private final int mIndicatorColor; private final int mDividerColor; SamplePagerItem(CharSequence title, int indicatorColor, int dividerColor) { mTitle = title; mIndicatorColor = indicatorColor; mDividerColor = dividerColor; } Fragment createFragment(int pos) { switch (pos) { case 0: return new LoginFragment(); case 1: return new RegisterFragment(); } return new LoginFragment(); } CharSequence getTitle() { return mTitle; } int getIndicatorColor() { return mIndicatorColor; } int getDividerColor() { return mDividerColor; } } static final String LOG_TAG = "SlidingTabsColorsFragment"; private SlidingTabLayout mSlidingTabLayout; private ViewPager mViewPager; private List<SamplePagerItem> mTabs = new ArrayList<SamplePagerItem>(); private Fragment fragment = this; private int currentPage = 0; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mTabs.add(new SamplePagerItem("Login", // Title Color.parseColor("#99CCFF"), Color.GRAY // Divider color )); mTabs.add(new SamplePagerItem("Register", // Title Color.parseColor("#E07471"), Color.GRAY // Divider color )); // END_INCLUDE (populate_tabs) } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.fragment_tabs, container, false); } // BEGIN_INCLUDE (fragment_onviewcreated) /** * This is called after the {@link #onCreateView(LayoutInflater, ViewGroup, Bundle)} has finished. * Here we can pick out the {@link View}s we need to configure from the content view. * * We set the {@link android.support.v4.view.ViewPager}'s adapter to be an instance of * {@link SampleFragmentPagerAdapter}. The {@link SlidingTabLayout} is then given the * {@link android.support.v4.view.ViewPager} so that it can populate itself. * * @param view View created in {@link #onCreateView(LayoutInflater, ViewGroup, Bundle)} */ @Override public void onViewCreated(View view, Bundle savedInstanceState) { // BEGIN_INCLUDE (setup_viewpager) // Get the ViewPager and set it's PagerAdapter so that it can display items mViewPager = (ViewPager) view.findViewById(R.id.viewpager); mViewPager.setAdapter(new SampleFragmentPagerAdapter(getChildFragmentManager())); // END_INCLUDE (setup_viewpager) // BEGIN_INCLUDE (setup_slidingtablayout) // Give the SlidingTabLayout the ViewPager, this must be done AFTER the ViewPager has had // it's PagerAdapter set. mSlidingTabLayout = (SlidingTabLayout) view.findViewById(R.id.sliding_tabs); //mSlidingTabLayout.setCustomTabView(R.layout.layout_tab, R.id.tab_tittle); mSlidingTabLayout.setViewPager(mViewPager); // BEGIN_INCLUDE (tab_colorizer) // Set a TabColorizer to customize the indicator and divider colors. Here we just retrieve // the tab at the position, and return it's set color mSlidingTabLayout.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() { @Override public int getIndicatorColor(int position) { return mTabs.get(position).getIndicatorColor(); } @Override public int getDividerColor(int position) { return mTabs.get(position).getDividerColor(); } }); mSlidingTabLayout.setOnPageChangeListener(new ViewPager.OnPageChangeListener() { @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { if (position == 0) ((ActionBarActivity) getActivity()).getSupportActionBar().setTitle("Login"); else if (position == 1) ((ActionBarActivity) getActivity()).getSupportActionBar().setTitle("Register"); } @Override public void onPageSelected(int position) { } @Override public void onPageScrollStateChanged(int state) { } }); mViewPager.setCurrentItem(getArguments().getInt("page", 0)); // END_INCLUDE (tab_colorizer) // END_INCLUDE (setup_slidingtablayout) } // END_INCLUDE (fragment_onviewcreated) /** * The {@link android.support.v4.app.FragmentPagerAdapter} used to display pages in this sample. The individual pages * are instances of which just display three lines of text. Each page is * created by the relevant {@link SamplePagerItem} for the requested position. * <p> * The important section of this class is the {@link #getPageTitle(int)} method which controls * what is displayed in the . */ class SampleFragmentPagerAdapter extends FragmentPagerAdapter { SampleFragmentPagerAdapter(FragmentManager fm) { super(fm); } /** * Return the {@link android.support.v4.app.Fragment} to be displayed at {@code position}. * <p> * Here we return the value returned from {@link SamplePagerItem#createFragment(int)}. */ @Override public Fragment getItem(int i) { return mTabs.get(i).createFragment(i); } @Override public int getCount() { return mTabs.size(); } // BEGIN_INCLUDE (pageradapter_getpagetitle) /** * Return the title of the item at {@code position}. This is important as what this method * returns is what is displayed in the {@link gr.plushost.prototypeapp.widgets.SlidingTabLayout}. * <p> * Here we return the value returned from {@link SamplePagerItem#getTitle()}. */ @Override public CharSequence getPageTitle(int position) { return mTabs.get(position).getTitle(); } // END_INCLUDE (pageradapter_getpagetitle) } }