錯誤使用MaterialViewPager庫中的片段

我用這LIB：https://github.com/florent37/MaterialViewPager 錯誤使用MaterialViewPager庫中的片段

我有一個抽屜式導航，如果我在列表中navdrawer物質觀尋呼機負荷點擊的項目之一了。（替換片段）。

但我得到這個錯誤有：（

 Recursive entry to executePendingTransactions 
     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1534) 
     at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:535) 
     at android.support.v4.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:163) 
     at android.support.v4.view.ViewPager.populate(ViewPager.java:1106) 
     at android.support.v4.view.ViewPager.populate(ViewPager.java:952) 
     at android.support.v4.view.ViewPager.setOffscreenPageLimit(ViewPager.java:733) 
     at razor.nikhil.mvp.MaterialVPFrag.onViewCreated(MaterialVPFrag.java:130) 
     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1035) 
     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1197) 
     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738) 
     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1562) 
     at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:483) 
     at android.os.Handler.handleCallback(Handler.java:739) 
     at android.os.Handler.dispatchMessage(Handler.java:95) 
     at android.os.Looper.loop(Looper.java:135) 
     at android.app.ActivityThread.main(ActivityThread.java:5254) 
     at java.lang.reflect.Method.invoke(Native Method) 
     at java.lang.reflect.Method.invoke(Method.java:372) 
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 


)

在這條線：

mViewPager.getViewPager().setOffscreenPageLimit(mViewPager.getViewPager().getAdapter().getCount());

如果我刪除了這一行它的工作原理（但可以說給我一個錯誤在未來）當我瀏覽標籤頁時，我收到了一些錯誤信息。（

java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid view holder adapter positionViewHolder{26fe4ecd position=6 id=-1, oldPos=-1, pLpos:-1 no parent} 
    at android.support.v7.widget.RecyclerView$Recycler.validateViewHolderForOffsetPosition(RecyclerView.java:4349) 
    at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4480) 
    at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4461) 
    at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1962) 
    at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1371) 
    at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1334) 
    at android.support.v7.widget.LinearLayoutManager.scrollBy(LinearLayoutManager.java:1162) 
    at android.support.v7.widget.LinearLayoutManager.scrollVerticallyBy(LinearLayoutManager.java:1019) 
    at android.support.v7.widget.RecyclerView$ViewFlinger.run(RecyclerView.java:3912) 
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767) 
    at android.view.Choreographer.doCallbacks(Choreographer.java:580) 
    at android.view.Choreographer.doFrame(Choreographer.java:549) 
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753) 
    at android.os.Handler.handleCallback(Handler.java:739) 
    at android.os.Handler.dispatchMessage(Handler.java:95) 
    at android.os.Looper.loop(Looper.java:135) 
    at android.app.ActivityThread.main(ActivityThread.java:5254) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:372) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) )

由於該行是否出現此錯誤？

MaterialVPFrag.java（片段與materialviewpager）

public class MaterialVPFrag extends Fragment { 
private MaterialViewPager mViewPager; 
List<Model_Daywise> todayslist_m; 
List<Model_Daywise> todayslist_t; 
List<Model_Daywise> todayslist_w; 
List<Model_Daywise> todayslist_th; 
List<Model_Daywise> todayslist_fr; 

public static MaterialVPFrag newInstance() { 
    return new MaterialVPFrag(); 
} 

@Nullable 
@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
    return inflater.inflate(R.layout.mvp_layout, container, false); 
} 

@Override 
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { 
    super.onViewCreated(view, savedInstanceState); 
    todayslist_m = new MTWTHgetset(getActivity(), "monday").getAllCredentials();//getting data from SQL 
    todayslist_t = new MTWTHgetset(getActivity(), "tuesday").getAllCredentials(); 
    todayslist_w = new MTWTHgetset(getActivity(), "wednesday").getAllCredentials(); 
    todayslist_th = new MTWTHgetset(getActivity(), "thursday").getAllCredentials(); 
    todayslist_fr = new MTWTHgetset(getActivity(), "friday").getAllCredentials(); 
    mViewPager = (MaterialViewPager) view.findViewById(R.id.materialViewPager); 
    mViewPager.getViewPager().setAdapter(new FragmentStatePagerAdapter(getActivity().getSupportFragmentManager()) { 

     @Override 
     public Fragment getItem(int position) { 
      switch (position) { 
       case 0: 
        return RecyclerViewFragment.newInstance(todayslist_m); 
       case 1: 
        return RecyclerViewFragment.newInstance(todayslist_t); 
       case 2: 
        return RecyclerViewFragment.newInstance(todayslist_w); 
       case 3: 
        return RecyclerViewFragment.newInstance(todayslist_th); 
       case 4: 
        return RecyclerViewFragment.newInstance(todayslist_fr); 
       // return WebViewFragment.newInstance(); 
       default: 
        return RecyclerViewFragment.newInstance(todayslist_m); 
      } 
     } 

     @Override 
     public int getCount() { 
      return 5; 
     } 

     @Override 
     public CharSequence getPageTitle(int position) { 
      switch (position) { 
       case 0: 
        return "Monday"; 
       case 1: 
        return "Tuesday"; 
       case 2: 
        return "Wednesday"; 
       case 3: 
        return "Thursday"; 
       case 4: 
        return "Friday"; 
      } 
      return ""; 
     } 
    }); 
    mViewPager.setMaterialViewPagerListener(new MaterialViewPager.Listener() { 
     @Override 
     public HeaderDesign getHeaderDesign(int page) { 
      switch (page) { 
       case 0: 
        return HeaderDesign.fromColorResAndUrl(
          R.color.green, 
          "https://fs01.androidpit.info/a/63/0e/android-l-wallpapers-630ea6-h900.jpg"); 
       case 1: 
        return HeaderDesign.fromColorResAndUrl(
          R.color.blue, 
          "http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2014/06/wallpaper_51.jpg"); 
       case 2: 
        return HeaderDesign.fromColorResAndUrl(
          R.color.cyan, 
          "http://www.droid-life.com/wp-content/uploads/2014/10/lollipop-wallpapers10.jpg"); 
       case 3: 
        return HeaderDesign.fromColorResAndUrl(
          R.color.red, 
          "http://www.tothemobile.com/wp-content/uploads/2014/07/original.jpg"); 
      } 

      //execute others actions if needed (ex : modify your header logo) 

      return null; 
     } 
    }); 

     mViewPager.getViewPager().setOffscreenPageLimit(mViewPager.getViewPager().getAdapter().getCount()); 
    mViewPager.getPagerTitleStrip().setViewPager(mViewPager.getViewPager()); 

    View logo = view.findViewById(R.id.logo_white); 
    if (logo != null) 
     logo.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       mViewPager.notifyHeaderChanged(); 
       Toast.makeText(getActivity(), "Yes, the title is clickable", Toast.LENGTH_SHORT).show(); 
      } 
     }); 

} 
}

DrawerActivity.java（類具有NavDrawer）

public class DrawerActivity extends ActionBarActivity { 

Toolbar t; 
private DrawerLayout mDrawerLayout; 
private ListView mDrawerList; 
private RelativeLayout mRelativeLayout; 
private ActionBarDrawerToggle mDrawerToggle; 
static List<Model_Slots> list; 
private CharSequence mDrawerTitle, mTitle; 
private String[] navMenuItems; 
private SpannableString[] navmenuItems; 
private ArrayAdapter<SpannableString> adapter; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_drawer); 

    try { 
     list = new Slots_GetSet(this).getAllCredentials(); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
    initStuffs(); 
    if (savedInstanceState == null) { 
     new SliderMenuClickListener().displayView(0); 
    } 

} 


private void initStuffs() { 
    mTitle = mDrawerTitle = getTitle(); 
    navMenuItems = getResources().getStringArray(R.array.Titles); 
    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); 
    mDrawerList = (ListView) findViewById(R.id.list_slidermenu); 
    mRelativeLayout = (RelativeLayout) findViewById(R.id.rel_drawer); 

    navmenuItems = new SpannableString[navMenuItems.length]; 
    for (int i = 0; i < navMenuItems.length; i++) { 
     navmenuItems[i] = new SpannableString(Html.fromHtml("<font color='#000000'>" + navMenuItems[i] + "</font>")); 
    } 
    adapter = new ArrayAdapter<SpannableString>(DrawerActivity.this, android.R.layout.simple_list_item_1, navmenuItems); 
    mDrawerList.setAdapter(adapter); 

    mDrawerToggle = new ActionBarDrawerToggle(DrawerActivity.this, mDrawerLayout, t, R.string.app_name, R.string.app_name) { 
     public void onDrawerClosed(View view) { 
      invalidateOptionsMenu(); 
     } 

     public void onDrawerOpened(View view) { 
      invalidateOptionsMenu(); 
     } 
    }; 
    mDrawerLayout.setDrawerListener(mDrawerToggle); 
    mDrawerList.setOnItemClickListener(new SliderMenuClickListener()); 
} 


@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    getMenuInflater().inflate(R.menu.drawer, menu); 
    return true; 
} 

@Override 
public boolean onPrepareOptionsMenu(Menu menu) { 
    boolean drawerOpen = mDrawerLayout.isDrawerOpen(mRelativeLayout); 
    menu.findItem(R.id.action_settings).setVisible(!drawerOpen); 
    return super.onPrepareOptionsMenu(menu); 
} 

@Override 
public void onConfigurationChanged(Configuration newConfig) { 
    super.onConfigurationChanged(newConfig); 
    mDrawerToggle.onConfigurationChanged(newConfig); 
} 

@Override 
protected void onPostCreate(Bundle savedInstanceState) { 
    super.onPostCreate(savedInstanceState); 
    mDrawerToggle.syncState(); 
} 

@Override 
public void setTitle(CharSequence title) { 
    super.setTitle(title); 
    mTitle = title; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    if (mDrawerToggle.onOptionsItemSelected(item)) { 
     return true; 
    } 
    int id = item.getItemId(); 
    if (id == R.id.action_settings) { 
     return true; 
    } 
    return super.onOptionsItemSelected(item); 
} 

private class SliderMenuClickListener implements ListView.OnItemClickListener { 

    @Override 
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
     displayView(position); 
    } 

    private void displayView(int position) { 
     Fragment fragment = null; 
     switch (position) { 
      case 0: 
       String s = getSharedPreferences("Apple", Context.MODE_PRIVATE).getString("slots_down", "no"); 
       if (s.equals("already")) { 
        fragment = new Fragment_slots(list); 
       } else if (s.equals("yes")) { 
        list = new Slots_GetSet(getApplicationContext()).getAllCredentials(); 
        fragment = new Fragment_slots(list); 
       } else if (s.equals("no")) { 
        fragment = new HomeFragment(); 
       } 
       break; 
      case 1: 
       fragment = new Photo_StudentLogin(); 
       break; 
      case 2: 
       fragment = new HomeFragment(); 
       break; 
      case 3: 
       fragment = MaterialVPFrag.newInstance(); 
       break; 
      default: 
       fragment = new HomeFragment(); 
       break; 
     } 
     if (fragment != null) { 
      FragmentManager fm = getSupportFragmentManager(); 
      fm.beginTransaction().replace(R.id.frame_container, fragment).commit(); 
      mDrawerList.setItemChecked(position, true); 
      mDrawerList.setSelection(position); 
      mDrawerLayout.closeDrawer(mRelativeLayout); 
     } else { 
      Log.e("DrawerActivity", "Error creating fragment"); 
     } 
    } 

} 
}

謝謝！

來源

2015-09-06 Nikhil Verma

您正在使用的示例使用活動。您正在使用一個片段，這意味着您有嵌套片段。

所以你需要使用子片段管理器而不是支持片段管理器。因此，而不是：

mViewPager.getViewPager().setAdapter(new FragmentStatePagerAdapter(getSupportFragmentManager())

到：

mViewPager.getViewPager().setAdapter(new FragmentStatePagerAdapter(getChildFragmentManager())

因爲當你到達這條線：

mViewPager.getViewPager().setOffscreenPageLimit(mViewPager.getViewPager().getAdapter().getCount());

您沒有訪問正確的適配器。您正在接收父母的適配器，同時撥打了孩子的電話。引起遞歸錯誤。

刪除該行後，您將遇到適配器錯誤，因爲您沒有使用正確的片段管理器。

鏈接問題討論如下：

How to add a Fragment inside a ViewPager using Nested Fragment (Android 4.2)

Recursive entry to executePendingTransactions

ViewPager: Recursive entry to executePendingTransactions

如果您仍然有問題，讓我知道。

來源

2015-09-11 14:38:59

嘿，雖然搜索這個錯誤，我看到了你建議的解決方案，但問題是，它顯示無法解析方法getChildFragmentManager（）。 –

我正在使用 'com.android.support:appcompat-v7:23.0.0'。 –

呵呵，我正在使用getActivity。getChildFragmentManager（）而不僅僅是getChildFragmentManager（）。讓我嘗試！ –

錯誤使用MaterialViewPager庫中的片段

回答

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