FragmentTransaction .attach和.detach的Actionbar選項卡

我試圖讓代碼here工作。它編譯好。它會運行。它會加載標籤1（3）。然而，當我點擊第二或第三選項卡上，我得到這個：FragmentTransaction .attach和.detach的Actionbar選項卡

java.lang.NoSuchMethodError: android.app.FragmentTransaction.detach

這種情況發生在這裏的代碼

public void onTabUnselected(Tab tab, FragmentTransaction ft) { 
    if (mFragment != null) { 
     //ft.detach(mFragment); //requires API Level 13 
     ft.remove(mFragment); //this does not do the same thing as detach 
    } 
}

我發現detach僅適用於API級別13.我試着remove，但它顯然不會做同樣的事情。有沒有人有任何想法如何克服這個基於第一個link代碼？

編輯：我想這同樣適用於attach因爲這也是在代碼中，但應用程序崩潰之前不會被打到。

來源

2011-11-06 Metallicraft

看來，替換代碼中引用附加和分離添加和刪除的幾個位置將允許代碼在預API級別13環境中正常運行。

public TabListener(Activity activity, String tag, Class<T> clz, Bundle args) { 
     mActivity = activity; 
     mTag = tag; 
     mClass = clz; 
     mArgs = args; 

     // Check to see if we already have a fragment for this tab, probably 
     // from a previously saved state. If so, deactivate it, because our 
     // initial state is that a tab isn't shown. 
     mFragment = mActivity.getFragmentManager().findFragmentByTag(mTag); 
     if (mFragment != null) { // && !mFragment.isDetached()) { 
      FragmentTransaction ft = mActivity.getFragmentManager().beginTransaction(); 
      //ft.detach(mFragment); 
      ft.remove(mFragment); 
      ft.commit(); 
     } 
    } 

    public void onTabSelected(Tab tab, FragmentTransaction ft) { 
     //if (mFragment == null) { 
      mFragment = Fragment.instantiate(mActivity, mClass.getName(), mArgs); 
      ft.add(android.R.id.content, mFragment, mTag); 
     //} else { 
     // ft.attach(mFragment); 
     //} 
    } 

    public void onTabUnselected(Tab tab, FragmentTransaction ft) { 
     if (mFragment != null) { 
      //ft.detach(mFragment); //requires API 13 
      ft.remove(mFragment); //this does not do the same thing as detach 
     } 
    }

來源

2011-11-06 05:58:50 Metallicraft

但ft.add /刪除選項卡 – Arvis