有的App当你第一次打开的是和常常会有引导页来描述一些App信息（功能，特点），当然也要做验证，验证第二次进入不进入引导页，直接进入App，此博客借助ViewPager来实现引导页， ViewPager类提供了多界面切换的新效果，是谷歌在3.0之后加入的新特性，所以需要引用android.support.v4.view.ViewPager。
效果：
public class NativeActivity extends AppCompatActivity { private ViewPager viewPager; private List<View> listImg; @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); //将屏幕设置为全屏 getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.activity_ys); initView(); } private void initView() { viewPager = (ViewPager) findViewById(R.id.viewpager); viewPager.setAdapter(new ViewPagerAdapter(getSupportFragmentManager(), showView())); listImg = new ArrayList<View>(); listImg.add(findViewById(R.id.y1)); listImg.add(findViewById(R.id.y2)); listImg.add(findViewById(R.id.y3)); viewPager.setOnPageChangeListener(showPageChange); } ViewPager.OnPageChangeListener showPageChange = new ViewPager.OnPageChangeListener() { @Override public void onPageSelected(int arg0) { for (int i = 0; i < listImg.size(); i++) { if (i == arg0) { listImg.get(arg0).setBackgroundResource(R.drawable.y_focused); } else { listImg.get(i).setBackgroundResource(R.drawable.y_normal); } } } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { // TODO Auto-generated method stub } @Override public void onPageScrollStateChanged(int arg0) { // TODO Auto-generated method stub } }; private List<Fragment> showView() { List<Fragment> listView = new ArrayList<Fragment>(); listView.add(new Fragment1()); listView.add(new Fragment2()); listView.add(new Fragment3()); return listView; } }