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   源码介绍

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package com.mojichina.demo;

import java.util.ArrayList;
import java.util.List;

import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.animation.CycleInterpolator;
import android.view.animation.LinearInterpolator;
import android.view.animation.RotateAnimation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.RelativeLayout;

import com.ryanharter.viewpager.PagerAdapter;
import com.ryanharter.viewpager.ViewPager;
import com.ryanharter.viewpager.ViewPager.OnPageChangeListener;

public class MainActivity extends FragmentActivity implements
		OnPageChangeListener {

	private ViewPager mPager;
	private VerticalFragementPagerAdapter mAdapter;

	private List<View> pagers = new ArrayList<View>();

	private ImageView t1_icon1,t1_icon2, t1_fixed, t1_next;

	private ImageView t2_icon1, t2_fixed, t2_next;

	private ImageView t3_fixed, t3_next, t3_icon2, t3_icon3, t3_icon4,
			t3_icon5, t3_icon6;
	private RelativeLayout centerLayout;
	private int fx1, fy1, tx1, ty1;
	private int fx2, fy2, tx2, ty2;
	private int fx3, fy3, tx3, ty3;
	private int fx4, fy4, tx4, ty4;

	private ImageView t4_icon1, t4_fixed;
	
	private int preIndex = 0;
	private AnimationDrawable t1_icon1_animationDrawable;
	private AnimationDrawable t3_icon6_animationDrawable;

	private Animation animationTop;
	private Animation animationBottom;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		mPager = (ViewPager) findViewById(R.id.pager);

		View view1 = LayoutInflater.from(this).inflate(
				R.layout.layout_tutorial_1, null);
		t1_icon1= (ImageView) view1.findViewById(R.id.t1_icon1);
		t1_icon2 = (ImageView) view1.findViewById(R.id.t1_icon2);
		t1_fixed = (ImageView) view1.findViewById(R.id.t1_fixed);
		t1_next = (ImageView) view1.findViewById(R.id.t1_next);
		pagers.add(view1);

		View view2 = LayoutInflater.from(this).inflate(
				R.layout.layout_tutorial_2, null);
		t2_icon1 = (ImageView) view2.findViewById(R.id.t2_icon1);
		t2_fixed = (ImageView) view2.findViewById(R.id.t2_fixed);
		t2_next = (ImageView) view2.findViewById(R.id.t2_next);
		pagers.add(view2);

		View view3 = LayoutInflater.from(this).inflate(
				R.layout.layout_tutorial_3, null);
		t3_icon2 = (ImageView) view3.findViewById(R.id.t3_icon2);
		t3_icon3 = (ImageView) view3.findViewById(R.id.t3_icon3);
		t3_icon4 = (ImageView) view3.findViewById(R.id.t3_icon4);
		t3_icon5 = (ImageView) view3.findViewById(R.id.t3_icon5);
		t3_icon6 = (ImageView) view3.findViewById(R.id.t3_icon6);
		t3_fixed = (ImageView) view3.findViewById(R.id.t3_fixed);
		t3_next = (ImageView) view3.findViewById(R.id.t3_next);
		centerLayout = (RelativeLayout) view3
				.findViewById(R.id.center_layout_3);
		pagers.add(view3);
		view3.getViewTreeObserver().addOnGlobalLayoutListener(
				new OnGlobalLayoutListener() {

					@Override
					public void onGlobalLayout() {
						// TODO Auto-generated method stub
						int h1 = centerLayout.getTop();
						int h2 = centerLayout.getBottom();
						DensityUtil densityUtil = new DensityUtil(
								MainActivity.this);
						int w = densityUtil.getScreenWidth();

						fx1 = t3_icon2.getTop()   t3_icon2.getHeight();
						fy1 = -t3_icon2.getTop() - t3_icon2.getHeight();
						tx1 = -t3_icon2.getWidth() - t3_icon2.getLeft();
						ty1 = t3_icon2.getTop()   t3_icon2.getLeft()
								  t3_icon2.getWidth();

						fx2 = t3_icon3.getTop()   t3_icon3.getHeight();
						fy2 = -t3_icon3.getTop() - t3_icon3.getHeight();
						tx2 = -t3_icon3.getWidth() - t3_icon3.getLeft();
						ty2 = t3_icon3.getTop()   t3_icon3.getLeft()
								  t3_icon3.getWidth();

						fx3 = w - t3_icon4.getLeft();
						fy3 = -(w - t3_icon4.getLeft());
						tx3 = -(h2 - h1 - t3_icon4.getTop());
						ty3 = h2 - h1 - t3_icon4.getTop();

						fx4 = w - t3_icon5.getLeft();
						fy4 = -(w - t3_icon5.getLeft());
						tx4 = -(h2 - h1 - t3_icon5.getTop());
						ty4 = h2 - h1 - t3_icon5.getTop();
					}
				});

		View view4 = LayoutInflater.from(this).inflate(
				R.layout.layout_tutorial_4, null);
		t4_icon1 = (ImageView) view4.findViewById(R.id.t4_icon1);
		t4_fixed = (ImageView) view4.findViewById(R.id.t4_fixed);
		pagers.add(view4);

		mAdapter = new VerticalFragementPagerAdapter();
		mPager.setAdapter(mAdapter);
		mPager.setOnPageChangeListener(this);

		animal(0);
	}

	private class VerticalFragementPagerAdapter extends PagerAdapter {

		@Override
		public int getCount() {
			// TODO Auto-generated method stub
			return pagers.size();
		}

		@Override
		public boolean isViewFromObject(View view, Object o) {
			return view == o;
		}

		@Override
		public Object instantiateItem(ViewGroup container, int position) {

			container.addView(pagers.get(position));
			return pagers.get(position);

		}

		@Override
		public void destroyItem(ViewGroup container, int position, Object object) {
			container.removeView((View) object);
		}

	}

	@Override
	public void onPageScrolled(int position, float positionOffset,
			int positionOffsetPixels) {
		// TODO Auto-generated method stub

	}

	@Override
	public void onPageSelected(int position) {
		// TODO Auto-generated method stub
		animal(position);
	}

	@Override
	public void onPageScrollStateChanged(int state) {
		// TODO Auto-generated method stub

	}

	
	

	private void animal(int position) {
		switch (position) {
		case 0:
			if (preIndex > position) {
				t2_icon1.setVisibility(View.INVISIBLE);
			}
			
			t1_icon1.setImageResource(R.drawable.t1_frame_animation);
			t1_icon1_animationDrawable = (AnimationDrawable) t1_icon1
					.getDrawable();
			t1_icon1_animationDrawable.start();
			
			Animation animation1 = AnimationUtils.loadAnimation(
					MainActivity.this, R.anim.tutorail_rotate);
			LinearInterpolator lin = new LinearInterpolator();
			animation1.setInterpolator(lin);

			t1_icon2.setVisibility(View.VISIBLE);
			t1_icon2.startAnimation(animation1);

			animationTop = AnimationUtils.loadAnimation(MainActivity.this,
					R.anim.tutorail_scalate_top);
			animationBottom = AnimationUtils.loadAnimation(MainActivity.this,
					R.anim.tutorail_bottom);
			t1_fixed.startAnimation(animationTop);
			t1_next.startAnimation(animationBottom);

			break;
		case 1:
			if (preIndex > position) {
				t3_icon2.getAnimation().cancel();
				t3_icon3.getAnimation().cancel();
				t3_icon4.getAnimation().cancel();
				t3_icon5.getAnimation().cancel();
				t3_icon2.setVisibility(View.INVISIBLE);
				t3_icon3.setVisibility(View.INVISIBLE);
				t3_icon4.setVisibility(View.INVISIBLE);
				t3_icon5.setVisibility(View.INVISIBLE);
				t3_icon6_animationDrawable.stop();
			} else {
				t1_icon1_animationDrawable.stop();
				t1_icon2.getAnimation().cancel();
				t1_icon2.setVisibility(View.INVISIBLE);
			}
			Animation animation2 = AnimationUtils.loadAnimation(
					MainActivity.this, R.anim.tutorail_scalate);

			t2_icon1.setVisibility(View.VISIBLE);
			t2_icon1.startAnimation(animation2);

			t2_fixed.startAnimation(animationTop);
			t2_next.startAnimation(animationBottom);

			break;
		case 2:

			t3_icon6.setImageResource(R.drawable.t3_frame_animation);
			t3_icon6_animationDrawable = (AnimationDrawable) t3_icon6
					.getDrawable();

			final TranslateAnimation transAnimation2 = new TranslateAnimation(
					fx1, tx1, fy1, ty1);
			transAnimation2.setDuration(800);
			transAnimation2.setRepeatCount(Animation.INFINITE);
			transAnimation2.setRepeatMode(Animation.RESTART);
			lin = new LinearInterpolator();
			transAnimation2.setInterpolator(lin);

			final TranslateAnimation transAnimation3 = new TranslateAnimation(
					fx2, tx2, fy2, ty2);
			transAnimation3.setDuration(1200);
			transAnimation3.setRepeatCount(Animation.INFINITE);
			transAnimation3.setRepeatMode(Animation.RESTART);
			transAnimation3.setInterpolator(lin);

			final TranslateAnimation transAnimation4 = new TranslateAnimation(
					fx3, tx3, fy3, ty3);
			transAnimation4.setDuration(1200);
			transAnimation4.setRepeatCount(Animation.INFINITE);
			transAnimation4.setRepeatMode(Animation.RESTART);
			transAnimation4.setInterpolator(lin);

			final TranslateAnimation transAnimation5 = new TranslateAnimation(
					fx4, tx4, fy4, ty4);
			transAnimation5.setDuration(800);
			transAnimation5.setRepeatCount(Animation.INFINITE);
			transAnimation5.setRepeatMode(Animation.RESTART);
			transAnimation5.setInterpolator(lin);

			// 延迟0.5秒
			new Handler() {
				public void handleMessage(android.os.Message msg) {
					if (msg.what == 1) {

						t3_icon2.setVisibility(View.VISIBLE);
						t3_icon3.setVisibility(View.VISIBLE);
						t3_icon4.setVisibility(View.VISIBLE);
						t3_icon5.setVisibility(View.VISIBLE);

						t3_icon2.startAnimation(transAnimation2);
						t3_icon3.startAnimation(transAnimation3);
						t3_icon4.startAnimation(transAnimation4);
						t3_icon5.startAnimation(transAnimation5);
						t3_icon6_animationDrawable.start();

					}
				};
			}.sendEmptyMessageDelayed(1, 1000);// 0.5秒

		
			t3_fixed.startAnimation(animationTop);
			t3_next.startAnimation(animationBottom);
			break;
		case 3:
			t3_icon2.getAnimation().cancel();
			t3_icon3.getAnimation().cancel();
			t3_icon4.getAnimation().cancel();
			t3_icon5.getAnimation().cancel();
			t3_icon2.setVisibility(View.INVISIBLE);
			t3_icon3.setVisibility(View.INVISIBLE);
			t3_icon4.setVisibility(View.INVISIBLE);
			t3_icon5.setVisibility(View.INVISIBLE);
			t3_icon6_animationDrawable.stop();

			int pivot = Animation.RELATIVE_TO_SELF;
			CycleInterpolator interpolator = new CycleInterpolator(3.0f);
			RotateAnimation animation = new RotateAnimation(0, 10, pivot,
					0.47f, pivot, 0.05f);
			animation.setStartOffset(500);
			animation.setDuration(3000);
			animation.setRepeatCount(1);// Animation.INFINITE
			animation.setInterpolator(interpolator);
			t4_icon1.startAnimation(animation);

			t4_fixed.startAnimation(animationTop);
			break;

		default:
			break;
		}

		preIndex = position;
	}
}