Java tutorial
/* * Copyright (C) 2012 yueyueniao * * 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.changhong.mscreensynergy.mainui.fragment; import java.util.ArrayList; import android.content.Context; 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.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.view.ViewGroup.LayoutParams; import android.view.animation.LinearInterpolator; import android.view.animation.TranslateAnimation; import android.widget.Button; import android.widget.ImageView; import android.widget.RadioButton; import android.widget.RadioGroup; import android.widget.RelativeLayout; import android.widget.RadioGroup.OnCheckedChangeListener; import com.changhong.mscreensynergy.R; import com.changhong.mscreensynergy.mainui.SlidingActivity; import com.changhong.mscreensynergy.mainui.view.SlidingMenu; import com.changhong.mscreensynergy.mainui.view.SyncHorizontalScrollView; public class ViewPageFragment extends Fragment { private Button showLeft; private MyAdapter mAdapter; private ViewPager mPager; private ArrayList<Fragment> pagerItemList = new ArrayList<Fragment>(); private RelativeLayout rl_nav; private SyncHorizontalScrollView mHsv; private RadioGroup rg_nav_content; private ImageView iv_nav_indicator; private ImageView iv_nav_left; private ImageView iv_nav_right; private LayoutInflater mInflater; private int indicatorWidth; private int currentIndicatorLeft = 0; public static String[] tabTitle = { "1", "2", "3", "4", "5" }; // public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { //mInflater = inflater; View mView = inflater.inflate(R.layout.view_pager, null); showLeft = (Button) mView.findViewById(R.id.showLeft); mPager = (ViewPager) mView.findViewById(R.id.pager); PageFragment1 page1 = new PageFragment1(); PageFragment2 page2 = new PageFragment2(); PageFragment3 page3 = new PageFragment3(); // PageFragment4 page4 = new PageFragment4(); // PageFragment5 page5 = new PageFragment5(); pagerItemList.add(page1); pagerItemList.add(page2); pagerItemList.add(page3); // pagerItemList.add(page4); // pagerItemList.add(page5); mAdapter = new MyAdapter(getFragmentManager()); mPager.setAdapter(mAdapter); mPager.setOffscreenPageLimit(3); //3 mPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() { @Override public void onPageSelected(int position) { if (myPageChangeListener != null) myPageChangeListener.onPageSelected(position); if (rg_nav_content != null && rg_nav_content.getChildCount() > position) { ((RadioButton) rg_nav_content.getChildAt(position)).performClick(); } } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageScrollStateChanged(int position) { } }); /* * ? */ rl_nav = (RelativeLayout) mView.findViewById(R.id.rl_nav); mHsv = (SyncHorizontalScrollView) mView.findViewById(R.id.mHsv); rg_nav_content = (RadioGroup) mView.findViewById(R.id.rg_nav_content); rg_nav_content.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { if (rg_nav_content.getChildAt(checkedId) != null) { TranslateAnimation animation = new TranslateAnimation(currentIndicatorLeft, ((RadioButton) rg_nav_content.getChildAt(checkedId)).getLeft(), 0f, 0f); animation.setInterpolator(new LinearInterpolator()); animation.setDuration(100); animation.setFillAfter(true); //? iv_nav_indicator.startAnimation(animation); mPager.setCurrentItem(checkedId); //ViewPager ? ? //? ? ? currentIndicatorLeft = ((RadioButton) rg_nav_content.getChildAt(checkedId)).getLeft(); mHsv.smoothScrollTo( (checkedId > 1 ? ((RadioButton) rg_nav_content.getChildAt(checkedId)).getLeft() : 0) - ((RadioButton) rg_nav_content.getChildAt(2)).getLeft(), 0); } } }); iv_nav_indicator = (ImageView) mView.findViewById(R.id.iv_nav_indicator); iv_nav_left = (ImageView) mView.findViewById(R.id.iv_nav_left); iv_nav_right = (ImageView) mView.findViewById(R.id.iv_nav_right); LayoutParams cursor_Params = iv_nav_indicator.getLayoutParams(); cursor_Params.width = indicatorWidth;// ? iv_nav_indicator.setLayoutParams(cursor_Params); mHsv.setSomeParam(rl_nav, iv_nav_left, iv_nav_right, SlidingActivity.scontext); mInflater = (LayoutInflater) SlidingActivity.scontext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); indicatorWidth = SlidingMenu.screenWidth / 4; initNavigationHSV(); return mView; } public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); showLeft.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { ((SlidingActivity) getActivity()).showLeft(); } }); } private void initNavigationHSV() { rg_nav_content.removeAllViews(); for (int i = 0; i < tabTitle.length; i++) { RadioButton rb = (RadioButton) mInflater.inflate(R.layout.nav_radiogroup_item, null); rb.setId(i); rb.setText(tabTitle[i]); rb.setLayoutParams(new LayoutParams(indicatorWidth, LayoutParams.MATCH_PARENT)); rg_nav_content.addView(rb); } } public boolean isFirst() { if (mPager.getCurrentItem() == 0) return true; else return false; } public boolean isEnd() { if (mPager.getCurrentItem() == pagerItemList.size() - 1) return true; else return false; } public class MyAdapter extends FragmentPagerAdapter { public MyAdapter(FragmentManager fm) { super(fm); } @Override public int getCount() { return pagerItemList.size(); } @Override public Fragment getItem(int position) { Fragment fragment = null; if (position < pagerItemList.size()) fragment = pagerItemList.get(position); else fragment = pagerItemList.get(0); return fragment; } } private MyPageChangeListener myPageChangeListener; public void setMyPageChangeListener(MyPageChangeListener l) { myPageChangeListener = l; } public interface MyPageChangeListener { public void onPageSelected(int position); } }