Java tutorial
/******************************************************************************* * Copyright 2013-2016 alladin-IT GmbH * * 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 at.alladin.rmbt.android.fragments.result; import java.util.concurrent.atomic.AtomicInteger; import android.content.Context; import android.content.res.Configuration; import android.os.Bundle; import android.os.Handler; import android.support.v4.app.Fragment; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.HorizontalScrollView; import android.widget.TabHost; import android.widget.TabHost.OnTabChangeListener; import android.widget.TabHost.TabSpec; import android.widget.TextView; import at.alladin.openrmbt.android.R; import at.alladin.rmbt.android.adapter.result.OnCompleteListener; import at.alladin.rmbt.android.adapter.result.OnDataChangedListener; import at.alladin.rmbt.android.adapter.result.RMBTResultPagerAdapter; import at.alladin.rmbt.android.main.ExtendedViewPager; import at.alladin.rmbt.android.main.RMBTMainActivity; public class RMBTResultPagerFragment extends Fragment implements OnTabChangeListener, OnPageChangeListener { /** * use this flag to make the map indicator visible only if coordinates are available */ public final static boolean MAP_INDICATOR_DYNAMIC_VISIBILITY = false; public static final String ARG_TEST_UUID = "test_uuid"; private RMBTResultPagerAdapter pagerAdapter; private ExtendedViewPager viewPager; private TabHost tabHost; private HorizontalScrollView scroller; private Handler handler = new Handler(); final AtomicInteger counter = new AtomicInteger(0); @Override public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); setRetainInstance(true); final Bundle args = getArguments(); final String uuid = args.getString(ARG_TEST_UUID); System.out.println("ResultPagerFragment: test uuid: " + uuid); pagerAdapter = new RMBTResultPagerAdapter((RMBTMainActivity) getActivity(), handler, uuid); pagerAdapter.setOnCompleteListener(new OnCompleteListener() { @Override public void onComplete(int flag, Object object) { if (pagerAdapter.getCount() > tabHost.getTabWidget().getChildCount()) { if (getActivity() != null) { LayoutInflater inflater = (LayoutInflater) getActivity() .getSystemService(Context.LAYOUT_INFLATER_SERVICE); for (int i = tabHost.getTabWidget().getChildCount(); i < pagerAdapter.getCount(); i++) { TabSpec tab = tabHost.newTabSpec(String.valueOf(i)); //tab.setIndicator(getActivity().getResources().getStringArray(R.array.result_page_title)[i]); tab.setContent(android.R.id.tabcontent); View indicator = inflater.inflate(R.layout.tabhost_indicator, null); TextView title = (TextView) indicator.findViewById(android.R.id.title); title.setText(getActivity().getResources().getStringArray( R.array.result_page_title)[RMBTResultPagerAdapter.RESULT_PAGE_TAB_TITLE_MAP .get(i)]); tab.setIndicator(indicator); tabHost.addTab(tab); } } } } }); if (MAP_INDICATOR_DYNAMIC_VISIBILITY) { pagerAdapter.setOnDataChangedListener(new OnDataChangedListener() { @Override public void onChange(Object oldValue, Object newValue, Object flag) { if (flag.equals("HAS_MAP")) { boolean b = (Boolean) newValue; if (b) { tabHost.getTabWidget().getChildTabViewAt(RMBTResultPagerAdapter.RESULT_PAGE_MAP) .setVisibility(View.VISIBLE); } else { tabHost.getTabWidget().getChildTabViewAt(RMBTResultPagerAdapter.RESULT_PAGE_MAP) .setVisibility(View.GONE); } } } }); } } @Override public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState) { pagerAdapter.setActivity((RMBTMainActivity) getActivity()); View v = inflater.inflate(R.layout.result_tabhost_pager, container, false); return createView(v, inflater, RMBTResultPagerAdapter.RESULT_PAGE_MAIN_MENU); } private View createView(View v, LayoutInflater inflater, int currentPage) { tabHost = (TabHost) v.findViewById(android.R.id.tabhost); tabHost.setup(); tabHost.setOnTabChangedListener(this); for (int i = 0; i < pagerAdapter.getCount(); i++) { TabSpec tab = tabHost.newTabSpec(String.valueOf(i)); //tab.setIndicator(getActivity().getResources().getStringArray(R.array.result_page_title)[i]); tab.setContent(android.R.id.tabcontent); View indicator = inflater.inflate(R.layout.tabhost_indicator, null); TextView title = (TextView) indicator.findViewById(android.R.id.title); title.setText(getActivity().getResources().getStringArray( R.array.result_page_title)[RMBTResultPagerAdapter.RESULT_PAGE_TAB_TITLE_MAP.get(i)]); if (MAP_INDICATOR_DYNAMIC_VISIBILITY) { if (i == RMBTResultPagerAdapter.RESULT_PAGE_MAP) { indicator.setVisibility(View.GONE); } } tab.setIndicator(indicator); tabHost.addTab(tab); } scroller = (HorizontalScrollView) v.findViewById(R.id.tabwidget_scrollview); viewPager = (ExtendedViewPager) v.findViewById(R.id.pager); viewPager.setAdapter(pagerAdapter); viewPager.setOnPageChangeListener(this); setCurrentPosition(currentPage); return v; } @Override public void onTabChanged(String tabId) { int tabIndex = Integer.valueOf(tabId); if (viewPager != null && (tabIndex != viewPager.getCurrentItem())) { scrollToTabTab(tabIndex); viewPager.setCurrentItem(tabIndex); } } @Override public void onPause() { super.onPause(); pagerAdapter.onPause(); } @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); setActionBarItems(); } @Override public void onDestroyView() { super.onDestroyView(); pagerAdapter.destroy(); } public void setCurrentPosition(final int pos) { //tabHost.setCurrentTab(pos); viewPager.setCurrentItem(pos); } @Override public void onPageScrollStateChanged(int arg0) { // TODO Auto-generated method stub } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { // TODO Auto-generated method stub } @Override public void onPageSelected(int index) { tabHost.setCurrentTab(index); scrollToTabTab(index); setActionBarItems(); } private void scrollToTabTab(int scrollToPosition) { if (scroller != null && tabHost != null && tabHost.getTabWidget() != null) { int startX = (scroller.getWidth() / 2); scroller.scrollTo(tabHost.getTabWidget().getChildAt(0).getWidth() * scrollToPosition - startX, 0); } } public TabHost getTabHost() { return tabHost; } public ViewPager getViewPager() { return viewPager; } public RMBTResultPagerAdapter getPagerAdapter() { return pagerAdapter; } public void setActionBarItems() { System.out.println("SET ACTIONBARI TEMS"); if (viewPager != null) { switch (viewPager.getCurrentItem()) { case RMBTResultPagerAdapter.RESULT_PAGE_MAIN_MENU: ((RMBTMainActivity) getActivity()).setVisibleMenuItems(R.id.action_menu_help, R.id.action_menu_share); break; case RMBTResultPagerAdapter.RESULT_PAGE_MAP: ((RMBTMainActivity) getActivity()).setVisibleMenuItems(R.id.action_menu_map); break; default: ((RMBTMainActivity) getActivity()).setVisibleMenuItems(); break; } } } public View getChildAt(int position) { if (viewPager != null) { return viewPager.getChildAt(position); } return null; } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); LayoutInflater inflater = LayoutInflater.from(getActivity()); populateViewForOrientation(inflater, (ViewGroup) getView()); } /** * * @param inflater * @param view */ private void populateViewForOrientation(LayoutInflater inflater, ViewGroup view) { int page = getViewPager().getCurrentItem(); view.removeAllViewsInLayout(); View v = inflater.inflate(R.layout.result_tabhost_pager, view); createView(v, inflater, page); } }