onSaveInstanceState（）沒有在我的片段上被調用

Question

當我按Home按鈕時，我的片段中的數據正在保存，但是當我切換到另一個片段時，該方法甚至沒有被調用。

我甚至嘗試將setRetainInstance（）設置爲false，但它仍然沒有調用函數。

RedFragment.java

import com.actionbarsherlock.app.SherlockFragment; 

import android.content.Context; 
import android.os.Bundle; 
import android.app.Activity; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.Menu; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.GridView; 

import android.view.View.OnTouchListener; 
import android.view.inputmethod.InputMethodManager; 

public class RedScorerFragment extends SherlockFragment { 


    LayoutInflater infl; 
    GridView mGrid; 

    EditText[] etCollection; 

    EditText mText; 

    int R1C1, R1C2; 
    String R1C3=""; 

    View tView; 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
     infl = inflater; 
     //super.onCreate(savedInstanceState); 
     View mView = inflater.inflate(R.layout.fragment_score_red, container, false); 
     mGrid = (GridView) mView.findViewById(R.id.gridViewRed); 


     setRetainInstance(false);//Do I need this? 

     tView = container.getRootView(); 




     /*if(savedInstanceState != null) 
     { 
      //R1C1 = savedInstanceState.getInt("R1C1"); 
      R1C2 = savedInstanceState.getInt("R1C2"); 
      R1C3 = savedInstanceState.getString("R1C3"); 

      //Log.d("savedd R1C1 ", String.valueOf(R1C1)); 
      Log.d("savedd R1C2 ", String.valueOf(R1C2)); 
      Log.d("savedd R1C3 ", String.valueOf(R1C3)); 
     } 
     */ 

     mGrid.setAdapter(new ImageAdapter(getActivity())); 
     return mView; 
    } 

    @Override 
    public void onActivityCreated(Bundle savedInstanceState){ 
     super.onActivityCreated(savedInstanceState); 

     if(savedInstanceState != null) 
     { 
      //R1C1 = savedInstanceState.getInt("R1C1", 0); 
      R1C2 = savedInstanceState.getInt("R1C2", 0); 
      R1C3 = savedInstanceState.getString("R1C3"); 

      //Log.v("saved R1C1 ", String.valueOf(R1C1)); 
      Log.v("saved R1C2 ", String.valueOf(R1C2)); 
      Log.v("saved R1C3 ", R1C3); 
     } 
     else 
      Log.w("instance state", "The instance state was null"); 

     //Log.v("saved R1C1 ", String.valueOf(R1C1)); 
     //Log.v("saved R1C2 ", String.valueOf(R1C2)); 
     //Log.v("saved R1C3 ", String.valueOf(R1C3)); 
    } 

    @Override 
    public void onSaveInstanceState(Bundle savedInstanceState){ 
     super.onSaveInstanceState(savedInstanceState); 
     savedInstanceState.putInt("R1C2", Integer.valueOf(etCollection[4].getText().toString())); 

     Log.v("Saving", etCollection[0].getText().toString()); 


     savedInstanceState.putString("R1C3", etCollection[4].getText().toString()); 


    } 

    public class ImageAdapter extends BaseAdapter{ 

     Context context; 




     public ImageAdapter(Context context) 
     { 
      this.context = context; 
      etCollection = new EditText[getCount()]; 
     } 


     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 

      View myView = convertView; 
      //LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

      if(convertView == null) 
      { 
       LayoutInflater li = infl; 
       myView= li.inflate(R.layout.grid_items, null); 


      } 

      EditText editText = (EditText) myView.findViewById(R.id.grid_item_edit_text_red); 
      etCollection[position] = editText; 

      EditText oText = (EditText)tView.findViewById(R.id.grid_item_edit_text_red); 
      etCollection[0] = oText; 
      return myView; 
     } 

     @Override 
     public int getCount() { 

      return 9;//only 9 
     } 

     @Override 
     public Object getItem(int position) { 
      Log.w("etCollection: " + position , etCollection[position].getText().toString()); 
      return etCollection[position]; 
     } 

     @Override 
     public long getItemId(int position) { 

      return 0;//mGrid.getItemIdAtPosition(position); 
     } 


    } 


} 

Answer 1

但是當我切換到另一個片段，該方法甚至不被調用

這是因爲它是不應該被調用然後。它將在onSaveInstanceState()被調用時被調用，該活動將在onPause()和onStop()事件中及其周圍調用。