解决方案 »

  1.   

    这样就可以了。public class FragmentA extends Fragment {      private View view;       @Override  
        public View onCreateView(LayoutInflater inflater, ViewGroup container,  
                Bundle savedInstanceState) {  
           view =  inflater.inflate(R.layout.fragment_a, container, false);  
            return view ;
        }  
           
        @Override  
        public void onActivityCreated(Bundle savedInstanceState) {  
            super.onActivityCreated(savedInstanceState);  
         TextView textView1 = (TextView) getView().findViewById(R.id.textView1);  
          textView1.setText("改变");  
        }  
      

  2.   

        @Override  
        public void onActivityCreated(Bundle savedInstanceState) {  
            super.onActivityCreated(savedInstanceState);  
         TextView textView1 = (TextView) view.findViewById(R.id.textView1);   //引用上面创建好的。就可以了,刚忘了修改
          textView1.setText("改变");  
        } 
      

  3.   

    mView = inflater.inflate(R.layout.ui_listview, null);
    用mView查找
      

  4.   

    @birdsaction,用了你的办法,onCreateView中,可以产生view。但是在onActivityCreated中,view.findViewById(R.id.textView1),还是空。public class FragmentA extends Fragment {
    private View view;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) {
     view = inflater.inflate(R.layout.fragment_a, container, false);
     if (view == null) {
    Log.i("FragmentA", " onCreateView:view is null");
    } else {
    Log.i("FragmentA", "onCreateView:view is NOOOOOOOOOOOOOOOOT null");
    }
     return view;
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    if (view == null) {
    Log.i("FragmentA", " onActivityCreated:view is null");
    } else {
    Log.i("FragmentA", "onActivityCreated:view is NOOOOOOOOOOOOOOOOT null");
    }
    TextView textView1 = (TextView) view.findViewById(R.id.textView1);
    if (textView1 == null) {
    Log.i("FragmentA", " onActivityCreated:textView1 is null");
    } else {
    Log.i("FragmentA", "onActivityCreated:textView1 is NOOOOOOOOOOOOOOOOT null");
    }
    //textView1.setText("改变");
    }
    }
    logcat:
    06-04 16:56:26.953: D/ActivityThread(22471): setTargetHeapUtilization:0.25
    06-04 16:56:26.953: D/ActivityThread(22471): setTargetHeapIdealFree:8388608
    06-04 16:56:26.953: D/ActivityThread(22471): setTargetHeapConcurrentStart:2097152
    06-04 16:56:27.314: W/IconCustomizer(22471): can't load transform_config.xml
    06-04 16:56:27.344: I/FragmentA(22471): onCreateView:view is NOOOOOOOOOOOOOOOOT null
    06-04 16:56:27.344: I/FragmentA(22471): onActivityCreated:view is NOOOOOOOOOOOOOOOOT null
    06-04 16:56:27.344: I/FragmentA(22471):  onActivityCreated:textView1 is null
    06-04 16:56:27.404: I/Adreno200-EGL(22471): <qeglDrvAPI_eglInitialize:294>: EGL 1.4 QUALCOMM build:  (CL3090659)
    06-04 16:56:27.404: I/Adreno200-EGL(22471): Build Date: 09/03/13 Tue
    06-04 16:56:27.404: I/Adreno200-EGL(22471): Local Branch: 
    06-04 16:56:27.404: I/Adreno200-EGL(22471): Remote Branch: 
    06-04 16:56:27.404: I/Adreno200-EGL(22471): Local Patches: 
    06-04 16:56:27.404: I/Adreno200-EGL(22471): Reconstruct Branch: 
      

  5.   

    哦。 这个我到没测试,我都是习惯在 onCreateView 里面把所有的view找到。
    这样做。   
     private View view;
     private TextView textView1 ;
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
             view = inflater.inflate(R.layout.fragment_a, container, false);
             if (view == null) {
                Log.i("FragmentA", " onCreateView:view is null");
            } else {
                Log.i("FragmentA", "onCreateView:view is NOOOOOOOOOOOOOOOOT null");
            }
             textView1 = (TextView) view.findViewById(R.id.textView1);
             return view;
        }
      

  6.   

    先Inflate你的fragment布局,然后再用inflate fragment的View调用findViewById()查找
      

  7.   


    这样就成功了,在FragmentA的onStart等方法中,getActivity().findViewById(R.id.textView1) 就能得到这个TextView。
    直接继承 android.app.Fragment,就不行。也许是Android的bug吧。其实我是按照developer.android.com上的trainning的例子做的,那个例子是为了兼容android3.0以前的系统,继承了android.support.v4.app.Fragment,官方例子运行正常。
    我的手机是Android4.1的,可以支持Fragment,所以我直接继承了adnroid.app.Fragment,结果就死活不成功。想不到是这个原因。谢谢各位。结贴。