片段實例，onCreate方法不調用

Question

我有創造的片段這樣的適配器：

public class FooAdapter<T extends Fragment> extends FragmentPagerAdapter { 
    private Class<T> c; 
    public FooAdapter(FragmentManager fm,Class<T> c) { 
     super(fm); 
     this.c = c; 
    } 

    @Override 
    public Fragment getItem(int position) { 
     try { 
     T fragment = c.newInstance(); 
     return fragment; 
     } catch (InstantiationException e) { 
     e.printStackTrace(); 
     } catch (IllegalAccessException e) { 
     e.printStackTrace(); 
     } 
     return null; 
    } 
} 

適配器的實例：

new FooAdapter<BarFragment>(getSupportFragmentManager(),BarFragment.class) 

我把日誌中的onCreate（和onAttach，onCreateView）的BarFragment，但沒有記錄！

public class BarFragment extends Fragment{ 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     Log.d(TAG, "on create view"); 
    } 
} 

Answer 1

對於初學者，您的onCreate方法是錯誤的，您應該使用onCreateView方法並忘記onCreate。

事情是這樣的：

public class BarFragment extends Fragment{ 

    public BarFragment(){ 

    } 

    @Override 

    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View rootView = inflater.inflate(LAYOUT YOU WANT TO INFLATE, container, false); 

     return rootView; 
    } 
} 

I'l期待更深入地進入你的適配器代碼現在。