フラグメントマネージャーmoveToStateは、タブがビューページ内でスワップすると間違ったフラグメントをロードします

Question

私はタブホストボタンを持つイメージアプリケーションを作成します。主なアクティビティビューページと各タブはフラグメントのみ0で最後のインデックスビューパイアで読み込みます。断片データ

MainActivity.java

public class MainActivity extends AppCompatActivity { 

    private void setUpViewPager() { 
      viewPager = (ViewPager) findViewById(R.id.viewpager); 
      tabLayout = (TabLayout) findViewById(R.id.tabs); 

      setupViewPager(viewPager); 
      tabLayout.setupWithViewPager(viewPager); 
     } 

    private void setupViewPager(ViewPager viewPager) { 

      ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager()); 
      adapter.addFrag(new EyeMakeupFragment(), "Eye Makeup"); 
      adapter.addFrag(new EyeBrowMakeupFragment(),"EyeBrow Makeup"); 
      adapter.addFrag(new LipstickGuideFragment(), "Lipstick Guide"); 
      adapter.addFrag(new MakeupTipsFragment(), "Makeup Tips"); 
      adapter.addFrag(new NailArtTutorialsFragment(), "Nail Art Tutorials"); 
      adapter.addFrag(new WomenHairStylesFragment(), "Women Hair Styles"); 


      viewPager.setAdapter(adapter); 
     } 

    public class ViewPagerAdapter extends FragmentPagerAdapter { 
      private final List<Fragment> mFragmentList = new ArrayList<>(); 
      private final List<String> mFragmentTitleList = new ArrayList<>(); 

      public ViewPagerAdapter(FragmentManager manager) { 
       super(manager); 
      } 


      @Override 
      public Fragment getItem(int position) { 

       return mFragmentList.get(position); 
      } 

      @Override 
      public int getCount() { 
       return mFragmentList.size(); 
      } 

      public void addFrag(Fragment fragment, String title) { 

       mFragmentList.add(fragment); 
       mFragmentTitleList.add(title); 
      } 

      @Override 
      public CharSequence getPageTitle(int position) { 

       return mFragmentTitleList.get(position); 
      } 
     } 

    } 

EyeMakeupFragment.java

public class EyeMakeupFragment extends Fragment { 

    public static boolean isEyeMakeUpFragmentActive=false; 
    private ImageUtils imageUtils; 
    List<String> imagePaths = new ArrayList<>(); 
    static GridViewAdapter adapter; 
    private ExpandableHeightGridView gridView=null; 
    private int columnWidth; 

    public EyeMakeupFragment() { 
     // Required empty public constructor 
    } 

    @Override 
    public void registerForContextMenu(View view) { 
     super.registerForContextMenu(view); 
    } 


    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 

     // Inflate the layout for this fragment 
     View rootView = inflater.inflate(R.layout.eye_makeup_fragment, container, false); 

     isEyeMakeUpFragmentActive= true; 

     EyeBrowMakeupFragment.isEyeBrowMakeUpFragmentActive =false; 
     LipstickGuideFragment.isLipStickFragmentActive = false; 
     MakeupTipsFragment.isMakeupTipsFragment = false; 
     NailArtTutorialsFragment.isNailArtTutorialsFragmentActive =false; 
     WomenHairStylesFragment.isWomenHairStyleFragmentActive = false; 

     gridView = (ExpandableHeightGridView) rootView.findViewById(R.id.grid_view); 

     imageUtils = new ImageUtils(getContext()); 

     // Initializing Grid View 
     InitializeGridLayout(); 

     // loading all image paths from Drawable 
      imagePaths = imageUtils.getEyeMakeupImageForDisplay(getContext()); 


     // Gridview adapter 
     adapter = new GridViewAdapter(getContext(),imagePaths, columnWidth, gridView); 

     // setting grid view adapter 
     gridView.setExpanded(true); 
     gridView.setAdapter(adapter); 
     setGridViewHeightBasedOnChildren(gridView,AppConstant.NUM_OF_COLUMNS); 

     return rootView; 

    } 

    @Override public void setUserVisibleHint(boolean isVisibleToUser) { 

     isEyeMakeUpFragmentActive = isVisibleToUser; 

     super.setUserVisibleHint(isVisibleToUser); 
    } 

    private void InitializeGridLayout() { 
     Resources r = getResources(); 
     float padding = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_FRACTION, AppConstant.GRID_PADDING, r.getDisplayMetrics()); 
     columnWidth = (int) ((imageUtils.getScreenWidth() - ((AppConstant.NUM_OF_COLUMNS + 1) * padding))/AppConstant.NUM_OF_COLUMNS); 
     gridView.setNumColumns(AppConstant.NUM_OF_COLUMNS); 
     gridView.setColumnWidth(columnWidth); 
     gridView.setStretchMode(GridView.NO_STRETCH); 
     gridView.setPadding((int) padding, (int) padding, (int) padding, (int) padding); 
     gridView.setHorizontalSpacing((int) padding); 
     gridView.setVerticalSpacing((int) padding); 
    } 


    /** 
    * Expendable GirdView ChildItem Function 
    * @param gridView 
    * @param columns 
    */ 
    public void setGridViewHeightBasedOnChildren(GridView gridView, int columns) { 
     ListAdapter listAdapter = gridView.getAdapter(); 
     if (listAdapter == null) { 
      // pre-condition 
      return; 
     } 

     int totalHeight = 0; 
     int items = listAdapter.getCount(); 
     int rows = 0; 

     View listItem = listAdapter.getView(0, null, gridView); 
     listItem.measure(0, 0); 
     totalHeight = listItem.getMeasuredHeight(); 

     float x = 1; 
     if(items > columns){ 
      x = items/columns; 
      rows = (int) (x + 1); 
      totalHeight *= rows; 
     } 

     ViewGroup.LayoutParams params = gridView.getLayoutParams(); 
     params.height = totalHeight; 
     gridView.setLayoutParams(params); 

    } 

} 

誰がmaを渡す方法を助けることができますタブボタンがスワップして現在のフラグメントデータをロードしているときにフラグメントをネゲートしますか？私は私の問題を解決

Answer 1

はviewPager.setAdapter

viewPager.setOffscreenPageLimit(6) //this line solves behavior of fragment 
then set viewPager.setAdapter(adapter); 

前setOffscreenPageLiimitを適用しました