带Tag的VIewpager

直接贴代码

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.Matrix;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.View;
import android.view.animation.TranslateAnimation;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

/**
 * Viewpager 带选项卡
 * 
 * @author LangK
 * 
 */
public class TabViewPager extends LinearLayout {
	/* 数据段begin */
	public final static String TAG = "TabViewPager";
	/**
	 * 上下文
	 */
	private Context mContext;
	/**
	 * 顶部tab布局
	 */
	private LinearLayout mTabHost;
	/**
	 * 下面显示的线条
	 */
	private ImageView mUnderline;

	private ViewPager mViewPager;
	/**
	 * 字体大小
	 */
	private static final int TEXTSIZE = 22;
	
	private onTabChanged onTabChanged;

	// tab及underline宽度，也是underline的最小移动距离
	private int mTabWidth;

	/* 数据段end */

	/* 函数段begin */
	public TabViewPager(Context context, AttributeSet attrs) {
		super(context, attrs);

		mContext = context;

		inflate(mContext, R.layout.tab_view_pager, this);
		initViews();
	}

	private void initViews() {
		mTabHost = (LinearLayout) findViewById(R.id.tab_host);
		mUnderline = (ImageView) findViewById(R.id.tab_underline);
		mViewPager = (ViewPager) findViewById(R.id.view_pager);
	}

	/**
	 * 使页签点击事件失效
	 */
	public void invalidateTabClick() {
		for (int i = 0; i < mTabHost.getChildCount(); i++) {
			mTabHost.getChildAt(i).setEnabled(false);
		}
	}

	/**
	 * 使页签点击事件有效
	 */
	public void validateTabClick() {
		for (int i = 0; i < mTabHost.getChildCount(); i++) {
			mTabHost.getChildAt(i).setEnabled(true);
		}
	}

	/**
	 * @param tabTitles
	 *            tab显示的标题
	 * @param parentWidth
	 *            父容器的宽
	 */
	public void initTabs(String[] tabTitles, int parentWidth) {
		if (mTabHost != null) {
			mTabHost.removeAllViews();
		}
		LinearLayout.LayoutParams tabHostLayoutParams;
		TextView tab;

		// 设置宽度
		if (tabTitles.length > 0) {
			mTabWidth = parentWidth / tabTitles.length;
			tabHostLayoutParams = new LinearLayout.LayoutParams(mTabWidth,
					LinearLayout.LayoutParams.WRAP_CONTENT);
		} else {
			return;
		}

		// 动态添加tab
		for (int loopVal = 0; loopVal < tabTitles.length; loopVal++) {
			tab = new TextView(mContext);
			tab.setText(tabTitles[loopVal]);
			tab.setTextSize(TEXTSIZE);
			tab.setBackgroundResource(R.drawable.bg_tab_text);
			if (loopVal == 0) {
				tab.setTextColor(Color.parseColor("#00C2C4"));
			} else {
				tab.setTextColor(Color.BLACK);
			}
			tabHostLayoutParams.weight = 1;
			tabHostLayoutParams.gravity = Gravity.CENTER_VERTICAL;
			tab.setLayoutParams(tabHostLayoutParams);
			tab.setPadding(0, 15, 0, 15);
			tab.setGravity(Gravity.CENTER);

			tab.setOnClickListener(new TabOnClickListener(loopVal));

			mTabHost.addView(tab);
		}

		// 设置underline宽度，使得下划线与tab宽度保持一致
		RelativeLayout.LayoutParams frameLayoutParams = new RelativeLayout.LayoutParams(
				mTabWidth, 2);
		frameLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
		Bitmap bitmap = BitmapFactory.decodeResource(getResources(),
				R.drawable.tab_line);
		Bitmap b = Bitmap.createBitmap(bitmap, 0, 0, mTabWidth, 6);// 设置tab的宽度和高度
		mUnderline.setImageBitmap(b);
	}

	public void setAdapter(PagerAdapter pagerAdapter) {
		mViewPager.setAdapter(pagerAdapter);
		// 滑动viewPager时也要执行mUnderline的移动动画
		mViewPager.setOnPageChangeListener(new OnPageChangeListener() {
			private int currentPosition = -1;
			private int nextPosition = -1;

			@Override
			public void onPageSelected(int position) {
				nextPosition = position;
				for (int i = 0; i < mTabHost.getChildCount(); i++) {
					if (i == position) {
						((TextView) mTabHost.getChildAt(i)).setTextColor(Color
								.parseColor("#00C2C4"));
					} else {
						((TextView) mTabHost.getChildAt(i))
								.setTextColor(Color.BLACK);
					}
				}
				if (onTabChanged!=null) {
					onTabChanged.onTabChanged();
				}
			}

			@Override
			public void onPageScrolled(int position, float positionOffset,
					int positionOffsetPixels) {
				currentPosition = position;
				// new一个矩阵
				Matrix matrix = new Matrix();
				// 设置激活条的最终位置
				matrix.setTranslate(mTabWidth * (position), 0);
				// 在滑动的过程中，计算出激活条应该要滑动的距离
				float t = (mTabWidth) * positionOffset;

				// 使用post追加数值
				matrix.postTranslate(t, 0);

				mUnderline.setImageMatrix(matrix);
			}

			@Override
			public void onPageScrollStateChanged(int state) {
			}
		});
	}

	/**
	 * 得到Viewpager当前显示的选项
	 * 
	 * @return 当前选择
	 */
	public int getCurrentItem() {
		return mViewPager.getCurrentItem();
	}

	public void setCurrentItem(int position) {
		// 记录当前的位置后再设置选中位置
		mViewPager.setCurrentItem(position);

	}

	/* 函数段end */

	public onTabChanged getOnTabChanged() {
		return onTabChanged;
	}

	public void setOnTabChanged(onTabChanged onTabChanged) {
		this.onTabChanged = onTabChanged;
	}

	/* 内部类begin */
	private class TabOnClickListener implements OnClickListener {
		private int viewPosition = -1;

		public TabOnClickListener(int position) {
			viewPosition = position;
		}

		@Override
		public void onClick(View v) {
			setCurrentItem(viewPosition);
		}
	}
	
	
	public interface onTabChanged{
		public void onTabChanged();
	}

}

布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    tools:ignore="ContentDescription" >

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >

        <LinearLayout
            android:id="@+id/tab_host"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:orientation="horizontal" >
        </LinearLayout>

          <!--   android:layout_alignBottom="@id/tab_host" -->
        <ImageView
            android:id="@+id/tab_underline"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/transparent"
            android:contentDescription="@null"
            android:layout_alignBottom="@id/tab_host"
            android:scaleType="matrix"
            android:src="@drawable/tab_line" />
    </RelativeLayout>

    <android.support.v4.view.ViewPager
        android:id="@+id/view_pager"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" />

</LinearLayout>

OK，差不多就酱紫了。