android 左右滑动界面ViewPage

package com.haigang.testflip.act; import java.util.ArrayList; import java.util.List; import com.haigang.testflip.R; import android.app.LocalActivityManager; import android.app.TabActivity; import android.content.Context; import android.content.Intent; import android.graphics.BitmapFactory; import android.graphics.Matrix; import android.os.Bundle; import android.os.Parcelable; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.util.DisplayMetrics; import android.util.Log; import android.view.View; import android.view.Window; import android.view.animation.Animation; import android.view.animation.TranslateAnimation; import android.widget.ImageView; import android.widget.TabHost; import android.widget.TextView; public class MainAct extends TabActivity { private ViewPager mPager;// 页卡内容 private List<View> listViews; // Tab页面列表 private ImageView cursor;// 动画图片 private TextView t1, t2, t3; // 页卡头标 private int offset = 0;// 动画图片偏移量 private int currIndex = 0;// 当前页卡编号 private int bmpW;// 动画图片宽度 private LocalActivityManager manager = null; private final static String TAG = "ConfigTabActivity"; private final Context context = MainAct.this; private TabHost mTabHost; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE);//取消标题 setContentView(R.layout.main); mTabHost = getTabHost(); mTabHost.addTab(mTabHost.newTabSpec("A").setIndicator("").setContent(new Intent(this, Lay1Act.class))); mTabHost.addTab(mTabHost.newTabSpec("B").setIndicator("").setContent(new Intent(this, Lay2Act.class))); mTabHost.addTab(mTabHost.newTabSpec("C").setIndicator("").setContent(new Intent(this, Lay3Act.class))); mTabHost.setCurrentTab(0); manager = new LocalActivityManager(this, true); manager.dispatchCreate(savedInstanceState); InitImageView(); InitTextView(); InitViewPager(); } /** * 初始化头标 */ private void InitTextView() { t1 = (TextView) findViewById(R.id.text1); t2 = (TextView) findViewById(R.id.text2); t3 = (TextView) findViewById(R.id.text3); t1.setOnClickListener(new MyOnClickListener(0)); t2.setOnClickListener(new MyOnClickListener(1)); t3.setOnClickListener(new MyOnClickListener(2)); } /** * 初始化ViewPager */ private void InitViewPager() { mPager = (ViewPager) findViewById(R.id.vPager); listViews = new ArrayList<View>(); MyPagerAdapter mpAdapter = new MyPagerAdapter(listViews); Intent intent = new Intent(context, Lay1Act.class); listViews.add(getView("Black", intent)); Intent intent2 = new Intent(context, Lay2Act.class); listViews.add(getView("Gray", intent2)); Intent intent3 = new Intent(context, Lay3Act.class); listViews.add(getView("White", intent3)); mPager.setAdapter(mpAdapter); mPager.setCurrentItem(0); mPager.setOnPageChangeListener(new MyOnPageChangeListener()); } /** * 初始化动画 */ private void InitImageView() { cursor = (ImageView) findViewById(R.id.cursor); bmpW = BitmapFactory.decodeResource(getResources(), R.drawable.a).getWidth();// 获取图片宽度 DisplayMetrics dm = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm); int screenW = dm.widthPixels;// 获取分辨率宽度 offset = (screenW / 3 - bmpW) / 2;// 计算偏移量 Matrix matrix = new Matrix(); matrix.postTranslate(offset, 0); cursor.setImageMatrix(matrix);// 设置动画初始位置 } /** * ViewPager适配器 */ public class MyPagerAdapter extends PagerAdapter { public List<View> mListViews; public MyPagerAdapter(List<View>mListViews) { this.mListViews = mListViews; } @Override public void destroyItem(View arg0, int arg1, Object arg2) { ((ViewPager) arg0).removeView(mListViews.get(arg1)); } @Override public void finishUpdate(View arg0) { } @Override public int getCount() { return mListViews.size(); } @Override public Object instantiateItem(View arg0, int arg1) { ((ViewPager) arg0).addView(mListViews.get(arg1), 0); return mListViews.get(arg1); } @Override public boolean isViewFromObject(View arg0, Object arg1) { return arg0 == (arg1); } @Override public void restoreState(Parcelable arg0, ClassLoader arg1) { } @Override public Parcelable saveState() { return null; } @Override public void startUpdate(View arg0) { } } /** * 头标点击监听 */ public class MyOnClickListener implements View.OnClickListener { private int index = 0; public MyOnClickListener(int i) { index = i; } @Override public void onClick(View v) { mPager.setCurrentItem(index); } }; /** * 页卡切换监听 */ public class MyOnPageChangeListener implements OnPageChangeListener { int one = offset * 2 + bmpW;// 页卡1 -> 页卡2 偏移量 int two = one * 2;// 页卡1 -> 页卡3 偏移量 @Override public void onPageSelected(int arg0) { Animation animation = null; Intent intent = new Intent(); switch (arg0) { case 0: Log.d(TAG, "---0---"); mTabHost.setCurrentTab(0); if (currIndex == 1) { animation = new TranslateAnimation(one, 0, 0, 0); } else if (currIndex == 2) { animation = new TranslateAnimation(two, 0, 0, 0); } break; case 1: Log.d(TAG, "---1---"); mTabHost.setCurrentTab(1); if (currIndex == 0) { animation = new TranslateAnimation(offset, one, 0, 0); } else if (currIndex == 2) { animation = new TranslateAnimation(two, one, 0, 0); } break; case 2: Log.d(TAG, "---2---"); mTabHost.setCurrentTab(2); if (currIndex == 0) { animation = new TranslateAnimation(offset, two, 0, 0); } else if (currIndex == 1) { animation = new TranslateAnimation(one, two, 0, 0); } break; } currIndex = arg0; animation.setFillAfter(true);// True:图片停在动画结束位置 animation.setDuration(300); cursor.startAnimation(animation); } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageScrollStateChanged(int arg0) { } } private View getView(String id, Intent intent) { return manager.startActivity(id, intent).getDecorView(); } }