当我点击第二个片段android中的按钮时，查看寻呼机跳到不规则位置？(View pager skipping to irregular position when I click button in

当我点击第二个片段android中的按钮时，查看寻呼机跳到不规则位置？(View pager skipping to irregular position when I click button in second fragment android?)

我在活动中使用视图寻呼机，顺序是 - 当我点击第一页中的下一个按钮时，它应该转到第二页。如果我点击第二页上的按钮，它应该到第三个等等。但我目前的应用程序行为怪异，即，当我点击第二页中的下一个按钮时，它会转到第四页。再次当我点击第一页的第一个按钮时，它跳转到第三页，等等。

这是代码。

public class ViewPagerActivity extends AppCompatActivity { private ViewPager pager; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.viewpager_act); setViewPager(); /*pager.setPageTransformer(true, new ZoomPageTransformer()); pager.setAdapter(new MyViewPagerAdapter(getSupportFragmentManager())); pager.post(new Runnable() { @Override public void run() { pager.setCurrentItem(position); //don't know how to use this from fragment } });*/ } private void setViewPager() { pager = (ViewPager) findViewById(R.id.viewPager); FragmentManager fm = getSupportFragmentManager(); ViewPagerAdapter adapter = new ViewPagerAdapter(fm); pager.setAdapter(adapter); } public void setCurrentItem(int selectedPosition) { pager.setCurrentItem(selectedPosition, true); } private class ViewPagerAdapter extends FragmentPagerAdapter { public ViewPagerAdapter(FragmentManager supportFragmentManager) { super(supportFragmentManager); } @Override public Fragment getItem(int position) { switch (position) { case 0: return FirstPager.newInstance(); case 1: return SecondPager.newInstance(); case 2: return ThirdPager.newInstance(); case 3: return FourthPager.newInstance(); case 4: return FifthPager.newInstance(); case 5: return SixthPager.newInstance(); default: return null; } } @Override public int getCount() { return 6; } }

FirstPager：

public class FirstPager extends Fragment { private ImageView slideArrow; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = inflater.inflate(R.layout.first_pager, container, false); return v; } public static FirstPager newInstance() { FirstPager fragment = new FirstPager (); return fragment; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); initUI(); } private void initUI() { slideArrow = (ImageView) getActivity().findViewById(R.id.next_arrow); slideArrow.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { ((ViewPagerActivity)getActivity()).setCurrentItem (1); } }); } }

同样在其他片段中，我给当前的项目2,3,4,5和6.但它的位置行为是不正确的。

我提到了一些帖子，但在我的情况下，我将如何申请一种方法从片段传递，以使位置正确工作？

I am using view pager in activity and the sequence is - when I click the next button in first page, it should go to the second page. If I click the button in second page, it should go to third and so on. But my current app is behaving weird, i.e, When I click next button in second page, it goes to fourth page. Once again when I click first button in first page, it jumps to third page and so on..

Here is code.

FirstPager:

Similarly in other fragments, I gave currentItem as 2,3,4,5 and 6. But it’s position behavior is not correct.

I referred some post but how in my case, how I will apply for a method to pass from fragment to make the position to work correctly?