Android:在按钮点击时直接滚动/显示ViewPager中的特定页面

Question

我想在按钮点击时显示ViewPager的特定页面.它正在工作,但滚动到该特定页面并不顺利,即假设我在页面号.1但是如果我想去第 5,其他页面2,3,4也滚动.我只想滚动到该特定页面.怎么做.我使用了以下代码,请看一下:

下面的代码是FragmentActivity:

public class ScreenSlideFragmentActivity extends FragmentActivity implements SlidingPageInterface{
    private static final int NUM_PAGES = 6;
    private ViewPager mPager;
    private PagerAdapter mPagerAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_screen_slide);
        mPager = (ViewPager) findViewById(R.id.pager);
        mPagerAdapter = new ScreenSlidePagerAdapter(getSupportFragmentManager());
        mPager.setAdapter(mPagerAdapter);
        mPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            @Override
            public void onPageSelected(int position) {
            }
        });
    }

    private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter {
        public ScreenSlidePagerAdapter(android.support.v4.app.FragmentManager fragmentManager) {
            super(fragmentManager);
        }

        @Override
        public android.support.v4.app.Fragment getItem(int position) {
            return ScreenSlidePageFragment.create(position, NUM_PAGES, ScreenSlideFragmentActivity.this);
        }

        @Override
        public int getCount() {
            return NUM_PAGES;
        }
    }

    @Override
    public void notifyToSlideToRespectivePage(int pageNumber) {
        mPager.setCurrentItem(pageNumber, true);
    }
}

下面的代码是片段:

public class ScreenSlidePageFragment extends android.support.v4.app.Fragment {
        public static final String ARG_CURRENT_PAGE = "current_page";
        public static final String ARG_TOTAL_PAGE_COUNT = "total_page_count";
        private int mPageNumber;
        private int mTotalPageCount;
        private static ScreenSlideFragmentActivity mActivity;
        public static ScreenSlidePageFragment create(int pageNumber, int totalNoPages, ScreenSlideFragmentActivity activity) {
            Log.e("create", "create called");
            ScreenSlidePageFragment fragment = new ScreenSlidePageFragment();
            Bundle args = new Bundle();
            args.putInt(ARG_CURRENT_PAGE, pageNumber);
            args.putInt(ARG_TOTAL_PAGE_COUNT, totalNoPages);
            fragment.setArguments(args);
            mActivity = activity;
            return fragment;
        }

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            mPageNumber = getArguments().getInt(ARG_CURRENT_PAGE);
            mTotalPageCount = getArguments().getInt(ARG_TOTAL_PAGE_COUNT);
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {        
            ViewGroup rootView = (ViewGroup) inflater
                    .inflate(R.layout.fragment_screen_slide_page, container, false);

            // Write Logic below to Dynamically Display Buttons as per "total_page_count"

            return rootView;
        }
        public int getPageNumber() {
            return mPageNumber;
        }

        public class HandleDotIVClickListener implements View.OnClickListener {
            @Override
            public void onClick(View view) {            
                int tag = (Integer) view.getTag();
                mActivity.notifyToSlideToRespectivePage(tag);
            }

        }
    }

任何想法,如何实现这一目标.

Answer 1

我有一个应用程序,其中有超过100页,以及一个索引页面,导致特定的页码.从索引页面,如果我试图转到20页,我可以看到屏幕上的闪烁,从1到19然后到20.

如果我想去第5页,我使用下面的内容

viewPager.setCurrentItem(4,false);
viewPager.setCurrentItem(5);

这使得滚动停止并进入特定页面而不显示其他页面并且屏幕中没有闪烁.