有的App當你第一次開啟的是和常常會有引導頁來描述一些App資訊（功能，特點），當然也要做驗證，驗證第二次進入不進入引導頁，直接進入App，此部落格藉助ViewPager來實現引導頁， ViewPager類提供了多介面切換的新效果，是谷歌在3.0之後加入的新特性，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);
        //將螢幕設定為全屏
        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;
    }
}
 

由於程式碼太多，完整程式碼未給出，原始碼直接下載即可