Android碎片分離

Question

我有兩個片段的活動。一個片段以縱向顯示，另一個以橫向模式顯示。片段用java添加。

Fragment fragment = null; 
     if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) { 
      fragment = new FragmentPortrait(); 
     } else { 
      fragment = new FragmentLandscape(); 
     } 

     if (fragment != null) { 
      addFragment(fragment, savedInstanceState == null); 
     } 

private void addFragment(Fragment fragment, boolean add) { 
     FragmentManager fragmentManager = getSupportFragmentManager(); 
     FragmentTransaction fragmentTransaction = fragmentManager 
       .beginTransaction(); 

     detachFragment("fragment"); 

     if (add) { 
      fragmentTransaction.add(R.id.layoutForFragment, fragment, 
        "fragment"); 
     } else { 
      fragmentTransaction.replace(R.id.layoutForFragment, 
        fragment, "fragment"); 
     } 

     fragmentTransaction.commit(); 
    } 

private void detachFragment(String fragmentTag) { 
     Fragment fragment = getSupportFragmentManager().findFragmentByTag(
       fragmentTag); 

     if (fragment != null) { 
      Log.i(TAG, "detaching"); 
      getSupportFragmentManager().beginTransaction().remove(fragment) 
        .commit(); 
     } 
    } 

我的問題是，如果我開始了我在縱向模式下的活動，當我旋轉如預期，但在肖像片段onActivityCreated被稱爲太顯示景觀片段的畫面。這意味着肖像片段仍然存在。你能告訴我我的錯誤在哪裏嗎？

Answer 1

Keep it simple :: Replacing Fragment = Removing Current Fragment + Adding New Fragment

---

Sample :: 修改與saveInstance您的需求和其他的東西

---

Boolean mFlag=false; 
{ 
     Fragment fragment = null; 

     if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) { 
     if(mFlag==false) 
      FragmentPortrait(); 
      mFlag=true; 
     } else { 
     if(mFlag==true) 
      FragmentLandscape(); 
      mFlag=false; 
     } 

     FragmentPortrait(){ 
     // Perform Action:: Replacing a fragment with the fragment you want to add in Portrait 
     } 

     FragmentLandscape(){ 
     // Perform Action:: Replacing a fragment with the fragment you want to add in Landscape 
     } 

}