android引导页面

效果图：引导页中的点一般不要留在图片中，要不屏幕适配不好做，这个点可以自己画，也可以是单独的图片。

1、判断sp中的值，是否是第一次进入
2、对viewpager进行监听
3、当滑动到当前页面的时候，动态设置小圆点的显示图片
4、滑动到最后的时候向sp中保存
5、对于在引导页面中后退键的处理，结束引导页面，跳转到主界面
目录结构：

1、WelcomActivity中代码：

package com.example.viewpagerdemo;

import utils.Constant;
import utils.SPUtils;
import android.annotation.SuppressLint;
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.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ImageView;

public class WelcomeActivity extends ActionBarActivity implements View.OnClickListener{public WelcomeActivity() {
    // TODO Auto-generated constructor stub
}
    private static final String TAG = "WelcomeActivity";
    private SectionsPagerAdapter mSectionsPagerAdapter;
    private ViewPager mViewPager;
    //移动到当前三个点时的显示图标；
    private ImageView mPosition1, mPosition2, mPosition3;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_welcome);

        getSupportActionBar().hide();
        mSectionsPagerAdapter = new SectionsPagerAdapter(
                getSupportFragmentManager(), this);
        mViewPager = (ViewPager) findViewById(R.id.pager);
        mViewPager.setAdapter(mSectionsPagerAdapter);
        initViewPagerListener();
        mPosition1 = (ImageView) findViewById(R.id.welcome1);
        mPosition2 = (ImageView) findViewById(R.id.welcome2);
        mPosition3 = (ImageView) findViewById(R.id.welcome3);

    }
    private void initViewPagerListener() {

        mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            @Override
            public void onPageSelected(int position) {
                setCurrentPagePosition(position+1);
            }
        });
    }
    //后退键的处理；
    @Override
    public void onBackPressed() {
        super.onBackPressed();
        closeActivity();
    }
    //后退键的处理，点击返回则结束引导页面，直接进入主页面；
    @Override
    public void onClick(View v) {   
        closeActivity();
    }
    //向sp中保存数据；
    private void closeActivity() {
        SPUtils.put(this, Constant.IS_FIRST, false);
        finish();
    }
    //根据显示的不同位置的图片时，显示不同的点；
    public void setCurrentPagePosition(int position) {
        Log.d(TAG, "position : " + position);
        mPosition1.setImageResource(R.drawable.welcome_pass);
        mPosition2.setImageResource(R.drawable.welcome_pass);
        mPosition3.setImageResource(R.drawable.welcome_pass);
        switch(position) {
        case 1:
            mPosition1.setImageResource(R.drawable.welcome_current);
            break;
        case 2:
            mPosition2.setImageResource(R.drawable.welcome_current);
            break;
        case 3:
            mPosition3.setImageResource(R.drawable.welcome_current);
            break;
        }
    }
    public class SectionsPagerAdapter extends FragmentPagerAdapter {

        private View.OnClickListener mListener;

        public SectionsPagerAdapter(FragmentManager fm, View.OnClickListener listener) {
            super(fm);
            mListener = listener;
        }

        @Override
        public Fragment getItem(int position) {
            // getItem is called to instantiate the fragment for the given page.
            // Return a PlaceholderFragment (defined as a static inner class
            // below).
            return PlaceholderFragment.newInstance(position + 1, mListener);
        }

        @Override
        public int getCount() {
            // Show 3 total pages.
            return 3;
        }

    }

    /** * A placeholder fragment containing a simple view. */
    @SuppressLint("ValidFragment")
    public static class PlaceholderFragment extends Fragment {
        /** * The fragment argument representing the section number for this * fragment. */
        private static final String ARG_SECTION_NUMBER = "section_number";

        private int mSelection = 0;

        private OnClickListener mListener;

        /** * Returns a new instance of this fragment for the given section number. * @param listener * @param mPositionListener */
        public static PlaceholderFragment newInstance(int sectionNumber, OnClickListener listener) {

            PlaceholderFragment fragment = new PlaceholderFragment(sectionNumber, listener);
            Bundle args = new Bundle();
            args.putInt(ARG_SECTION_NUMBER, sectionNumber);
            fragment.setArguments(args);
            return fragment;
        }

        @SuppressLint("ValidFragment")
        public PlaceholderFragment(int sectionNumber, OnClickListener listener) {
            mSelection = sectionNumber;
            mListener = listener;
        }

        public PlaceholderFragment() {}

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            Log.d(TAG, "mSelection " + mSelection);
            View rootView = inflater.inflate(R.layout.fragment_welcome,
                    container, false);
            ImageView imageView = (ImageView) rootView
                    .findViewById(R.id.section_label);

            ImageView start = (ImageView) rootView.findViewById(R.id.welcome_start);
            start.setOnClickListener(mListener);
            switch(mSelection) {
            case 1:
                imageView.setBackgroundResource(R.drawable.welcome_1);
                break;
            case 2:
                imageView.setBackgroundResource(R.drawable.welcome_2);
                break;
            case 3:
                imageView.setBackgroundResource(R.drawable.welcome_3);
                start.setVisibility(View.VISIBLE);
                break;
            }

            return rootView;
        }
    }

}

2、MainActivity中代码：

public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //如果是每一次的话则进入欢迎页面；
        if(SPUtils.getIsFisrst(this)==true){
            startActivity(new Intent(this,WelcomeActivity.class));
        }
    }
}

Demo下载地址：http://download.csdn.net/detail/androidxiaogang/9187197