| /* |
| * Copyright (C) 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 com.example.android.slidingtabsbasic; |
| |
| import com.example.android.common.logger.Log; |
| import com.example.android.common.view.SlidingTabLayout; |
| |
| import android.os.Bundle; |
| import android.support.v4.app.Fragment; |
| import android.support.v4.view.PagerAdapter; |
| import android.support.v4.view.ViewPager; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.TextView; |
| |
| /** |
| * A basic sample which shows how to use {@link com.example.android.common.view.SlidingTabLayout} |
| * to display a custom {@link ViewPager} title strip which gives continuous feedback to the user |
| * when scrolling. |
| */ |
| public class SlidingTabsBasicFragment extends Fragment { |
| |
| static final String LOG_TAG = "SlidingTabsBasicFragment"; |
| |
| /** |
| * A custom {@link ViewPager} title strip which looks much like Tabs present in Android v4.0 and |
| * above, but is designed to give continuous feedback to the user when scrolling. |
| */ |
| private SlidingTabLayout mSlidingTabLayout; |
| |
| /** |
| * A {@link ViewPager} which will be used in conjunction with the {@link SlidingTabLayout} above. |
| */ |
| private ViewPager mViewPager; |
| |
| /** |
| * Inflates the {@link View} which will be displayed by this {@link Fragment}, from the app's |
| * resources. |
| */ |
| @Override |
| public View onCreateView(LayoutInflater inflater, ViewGroup container, |
| Bundle savedInstanceState) { |
| return inflater.inflate(R.layout.fragment_sample, 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 ViewPager}'s adapter to be an instance of {@link SamplePagerAdapter}. The |
| * {@link SlidingTabLayout} is then given the {@link 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 SamplePagerAdapter()); |
| // 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.setViewPager(mViewPager); |
| // END_INCLUDE (setup_slidingtablayout) |
| } |
| // END_INCLUDE (fragment_onviewcreated) |
| |
| /** |
| * The {@link android.support.v4.view.PagerAdapter} used to display pages in this sample. |
| * The individual pages are simple and just display two lines of text. The important section of |
| * this class is the {@link #getPageTitle(int)} method which controls what is displayed in the |
| * {@link SlidingTabLayout}. |
| */ |
| class SamplePagerAdapter extends PagerAdapter { |
| |
| /** |
| * @return the number of pages to display |
| */ |
| @Override |
| public int getCount() { |
| return 10; |
| } |
| |
| /** |
| * @return true if the value returned from {@link #instantiateItem(ViewGroup, int)} is the |
| * same object as the {@link View} added to the {@link ViewPager}. |
| */ |
| @Override |
| public boolean isViewFromObject(View view, Object o) { |
| return o == view; |
| } |
| |
| // 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 SlidingTabLayout}. |
| * <p> |
| * Here we construct one using the position value, but for real application the title should |
| * refer to the item's contents. |
| */ |
| @Override |
| public CharSequence getPageTitle(int position) { |
| return "Item " + (position + 1); |
| } |
| // END_INCLUDE (pageradapter_getpagetitle) |
| |
| /** |
| * Instantiate the {@link View} which should be displayed at {@code position}. Here we |
| * inflate a layout from the apps resources and then change the text view to signify the position. |
| */ |
| @Override |
| public Object instantiateItem(ViewGroup container, int position) { |
| // Inflate a new layout from our resources |
| View view = getActivity().getLayoutInflater().inflate(R.layout.pager_item, |
| container, false); |
| // Add the newly created View to the ViewPager |
| container.addView(view); |
| |
| // Retrieve a TextView from the inflated View, and update it's text |
| TextView title = (TextView) view.findViewById(R.id.item_title); |
| title.setText(String.valueOf(position + 1)); |
| |
| Log.i(LOG_TAG, "instantiateItem() [position: " + position + "]"); |
| |
| // Return the View |
| return view; |
| } |
| |
| /** |
| * Destroy the item from the {@link ViewPager}. In our case this is simply removing the |
| * {@link View}. |
| */ |
| @Override |
| public void destroyItem(ViewGroup container, int position, Object object) { |
| container.removeView((View) object); |
| Log.i(LOG_TAG, "destroyItem() [position: " + position + "]"); |
| } |
| |
| } |
| } |