学步园

主要布局文件

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

    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center" >
    </android.support.v4.view.ViewPager>

</LinearLayout>

java代码

package com.mars.demo;

import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;

public class MainActivity1 extends Activity {
	private ViewPager mViewPager;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		mViewPager = (ViewPager) findViewById(R.id.viewpager);

		// 将要分页显示的View装入数组中
		LayoutInflater mLi = LayoutInflater.from(this);
		View view1 = mLi.inflate(R.layout.view1, null);
		View view2 = mLi.inflate(R.layout.view2, null);
		View view3 = mLi.inflate(R.layout.view3, null);

		// 每个页面的Title数据
		final ArrayList<View> views = new ArrayList<View>();
		views.add(view1);
		views.add(view2);
		views.add(view3);

		final ArrayList<String> titles = new ArrayList<String>();
		titles.add("tab1");
		titles.add("tab2");
		titles.add("tab3");

		// 填充ViewPager的数据适配器
		PagerAdapter mPagerAdapter = new PagerAdapter() {

			@Override
			public boolean isViewFromObject(View arg0, Object arg1) {
				return arg0 == arg1;
			}

			@Override
			public int getCount() {
				return views.size();
			}

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

			@Override
			public CharSequence getPageTitle(int position) {
				return titles.get(position);
			}

			@Override
			public Object instantiateItem(View container, int position) {
				((ViewPager) container).addView(views.get(position));
				return views.get(position);
			}
		};

		mViewPager.setAdapter(mPagerAdapter);
	}
}