ビューページャでフラグメントを使用する

Question

私はビューページャ内で異なるフラグメントを使用するアプリケーションを作成していますが、ビューページャの左側にはフラグメントによってデータが変化する3つのプログレスバーがありますが、プログレスバーに割り当てられたすべてのデータは断片をスワイプすることなく、データがプログレスバーで変更されていない断片をスワイプしながら、表示取得され、ここに私のコードは

public class History extends Fragment { 
final int PAGE_COUNT = 3; 
private String tabTitles[] = new String[]{"Tab1", "Tab2", "Tab3"}; 
public static final String ARG_PAGE = "ARG_PAGE"; 

private static final int NUM_PAGES = 3; 

String medicinename,medicinepercentage,numberdosages,time; 
String date,day,daypercentage; 
String month,monthdata; 

/** 
* The pager widget, which handles animation and allows swiping horizontally to access previous 
* and next wizard steps. 
*/ 
private ViewPager mPager; 


/** 
* The pager adapter, which provides the pages to the view pager widget. 
*/ 
private PagerAdapter mPagerAdapter; 


private int selectedPage; // set selected page 

// TODO: Rename parameter arguments, choose names that match 
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER 
private static final String ARG_PARAM1 = "param1"; 
private static final String ARG_PARAM2 = "param2"; 


DonutProgress dp; 
DonutProgress dp2; 
DonutProgress dp3; 

public static History newInstance(int page) { 
    Bundle args = new Bundle(); 
    args.putInt(ARG_PAGE, page); 
    History fragment = new History(); 
    fragment.setArguments(args); 
    return fragment; 
} 


// TODO: Rename and change types of parameters 
private String mParam1; 
private String mParam2; 
private Paint progressPaint = new Paint(); 
private int lineHeight = 30; 
private Paint incompletePaint = new Paint(); 

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

/** 
* Use this factory method to create a new instance of 
* this fragment using the provided parameters. 
* 
* @param param1 Parameter 1. 
* @param param2 Parameter 2. 
* @return A new instance of fragment History. 
*/ 
// TODO: Rename and change types and number of parameters 
public static History newInstance(String param1, String param2) { 
    History fragment = new History(); 
    Bundle args = new Bundle(); 
    args.putString(ARG_PARAM1, param1); 
    args.putString(ARG_PARAM2, param2); 
    fragment.setArguments(args); 
    return fragment; 
} 


@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    // Inflate the layout for this fragment 
    View v = inflater.inflate(R.layout.fragment_history, container, false); 

    dp = (DonutProgress) v.findViewById(R.id.donut_progress1); 
    dp2 = (DonutProgress) v.findViewById(R.id.donut_progress2); 
    dp3 = (DonutProgress) v.findViewById(R.id.donut_progress3); 




    if (getArguments() != null) 
    { 
     mParam1 = getArguments().getString(ARG_PARAM1); 
     mParam2 = getArguments().getString(ARG_PARAM2); 

    } 

    mPager = (ViewPager) v.findViewById(R.id.pager); //the UI pager 
    mPagerAdapter = new ScreenSlidePagerAdapter(getFragmentManager()); 
    mPager.setAdapter(mPagerAdapter); 
    // mPager.setPageTransformer(true, new RotateDownTransformer()); //set the animation 

    selectedPage = 0; //current page 
    if (savedInstanceState != null) { //if app was paused, you can reopen the same page 
     selectedPage = savedInstanceState.getInt("SELECTED_PAGE"); 
    } 
    selectedPage = 1; //current page 
    if (savedInstanceState != null) { //if app was paused, you can reopen the same page 
     selectedPage = savedInstanceState.getInt("SELECTED_PAGE"); 
    } 
    selectedPage = 2; //current page 
    if (savedInstanceState != null) { //if app was paused, you can reopen the same page 
     selectedPage = savedInstanceState.getInt("SELECTED_PAGE"); 
    } 

    selectedPage = 3; //current page 
    if (savedInstanceState != null) { //if app was paused, you can reopen the same page 
     selectedPage = savedInstanceState.getInt("SELECTED_PAGE"); 
    } 


    mPager.setCurrentItem(selectedPage);//set the current page 
    mPager.setOffscreenPageLimit(4); 




    return v; 


    // return inflater.inflate(R.layout.fragment_history, container, false); 

} 


private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter{ 
    public ScreenSlidePagerAdapter(FragmentManager fm) { 
     super(fm); 
    } 
    int i = 0; 


    @Override 
    public Fragment getItem(int position) 
    { 

     if(position==0){ 
       Log.e("Fragment","Fragment 1::"+String.valueOf(i)); 
        new Progress(100).execute(); 
        new Progress2(20).execute(); 
        new Progress3(30).execute(); 

       return SlideFragment.newInstance(0, " ");} 

      if(position==1){ 
       Log.e("Fragment","Fragment 2"); 

        new Progress(40).execute(); 
        new Progress2(50).execute(); 
        new Progress3(90).execute(); 

       return Slidetwo.newInstance(String.valueOf(0), " ");} 
      if (position==2) 
       Log.e("Fragment","Fragment 3"); 

        new Progress(50).execute(); 
        new Progress2(10).execute(); 
        new Progress3(40).execute(); 

       return SlideThree.newInstance(String.valueOf(0), " "); 


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


} 


class Progress extends AsyncTask<Void, Integer, Integer> 
    { 
     int dummyVariable = 0; 
     Progress(int dummyVariable) 
     { 
      this.dummyVariable = dummyVariable; 
     } 
     @Override 
     protected void onPreExecute() { 
      super.onPreExecute(); 
      dp.setMax(100); 

     } 

     @Override 
     protected Integer doInBackground(Void... params) 
     { 
      for (int i = 0; i <= dummyVariable; i++) 
      { 
       publishProgress(i); 
       try 
       { 
        Thread.sleep(20); 
       } 
       catch (InterruptedException ie) 
       { 
        ie.printStackTrace(); 
       } 
      } 
      return null; 

     } 

     @Override 
     protected void onProgressUpdate(Integer... values) 
     { 
      super.onProgressUpdate(values); 
      dp.setProgress(values[0]); 
     } 

     @Override 
     protected void onPostExecute(Integer integer) 
     { 
      super.onPostExecute(integer); 
     } 
    } 

    class Progress2 extends AsyncTask<Void, Integer, Integer> 
    { 
     int dummyVariable = 0; 
     Progress2(int dummyVariable) 
     { 
      this.dummyVariable = dummyVariable; 
     } 


     @Override 
     protected void onPreExecute() 
     { 
      super.onPreExecute(); 
      dp2.setMax(100); 
     } 

     @Override 
     protected Integer doInBackground(Void... params) 
     { 
      for (int i = 0; i <= dummyVariable; i++) 
      { 
       publishProgress(i); 
       try { 
        Thread.sleep(20); 
       } 
       catch (InterruptedException ie) 
       { 
        ie.printStackTrace(); 
       } 
      } 
      return null; 
     } 

     @Override 
     protected void onProgressUpdate(Integer... values) { 
      super.onProgressUpdate(values); 

      dp2.setProgress(values[0]); 
     } 

     @Override 
     protected void onPostExecute(Integer integer) { 
      super.onPostExecute(integer); 
     } 
    } 


class Progress3 extends AsyncTask<Void, Integer, Integer> 
{ 

    int dummyVariable = 0; 
    Progress3(int dummyVariable) 
    { 
     this.dummyVariable = dummyVariable; 
    } 

    @Override 
    protected void onPreExecute() 
    { 
     super.onPreExecute(); 
     dp3.setMax(100); 
    } 

    @Override 
    protected Integer doInBackground(Void... params) 
    { 
     for (int i = 0; i <= dummyVariable; i++) { 
      publishProgress(i); 
      try 
      { 
       Thread.sleep(20); 
      } 
      catch (InterruptedException ie) 
      { 
       ie.printStackTrace(); 
      } 
     } 
     return null; 


    } 

    @Override 
    protected void onProgressUpdate(Integer... values) { 
     super.onProgressUpdate(values); 
     dp3.setProgress(values[0]); 
    } 

    @Override 
    protected void onPostExecute(Integer integer) { 
     super.onPostExecute(integer); 
    } 
} 

Answer 1

でページャアダプタでの進捗状況を変更しないでください。その下のコードを追加し、onPageSelected（）メソッドの位置に基づいて進捗を変更します。

viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() { 
    @Override 
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { 

    } 

    @Override 
    public void onPageSelected(int position) { 

    } 

    @Override 
    public void onPageScrollStateChanged(int state) { 

    } 
});