我的应用程序中的活动出现了一些问题。我正在使用方法保存一些数据onSavedInstanceState()
并在其中恢复onCreateView()
(此活动有两个片段,并且它具有 onCreate 和 onCreateView)。恢复的数据已更正,但我无法将它们正确放入我的活动中的微调器中。
我在此循环之前、内部和之后放置了一些断点:
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_spinner_item, list);
spinner.setAdapter(adapter);
**if(savedInstanceState != null) {
Log.i("SPINNER POS", ""+posSaved);
spinner.setSelection(posSaved);
}**
我可以观察到应用程序两次访问 onCreateView 方法...第一次 posSaved 变量是正确的,但第二次这个变量是 0 并且由于这个原因微调器永远不会显示保存在 posSaved 变量中的位置它显示 0 位置(默认情况下),然后就像我不使用 onSavedInstanceState 方法...
...为什么应用程序在 onCreateView() 方法中输入两次?我该如何解决这种情况?
PD。此活动也在 onCreate() 方法中输入两次。
我的活动代码
public class Menu_Seeker_Filter extends Fragment {
... (variables declarated) ...
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if ((getFragmentManager().findFragmentById(R.id.results_fragment) != null)) { //Fragments
mTwoPane = true;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_seeker_filtro, container, false);
if (savedInstanceState != null) {
// Restore value of members from saved state
posSaved = savedInstanceState.getInt("POSITION");
}
...
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_spinner_item, list);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
((TextView) parent.getChildAt(0)).setTextSize(18);
((TextView) parent.getChildAt(0)).setTypeface(font2);
text = (parent.getItemAtPosition(pos).toString());
posSaved = pos;
}
public void onNothingSelected(AdapterView<?> parent) {
//Do nothing.
}
});
if(savedInstanceState != null) {
Log.i("POSITION", ""+posSaved);
spinner.setSelection(posSaved);
}
}
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
// Save the user's current game state
savedInstanceState.putInt("POSITION", spinner.getSelectedItemPosition());
// Always call the superclass so it can save the view hierarchy state
super.onSaveInstanceState(savedInstanceState);
}
}
这个活动片段在这个类中被调用:
public class Menu_Seeker extends FragmentActivity {
...(variables declarated)...
final Menu_Seeker_Filter fragment = new Menu_Seeker_Filter();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_seeker_filter);
if ((getSupportFragmentManager().findFragmentById(R.id.results_fragment) != null)) { //Fragments
mTwoPane = true;
getSupportFragmentManager().beginTransaction().replace(R.id.seeker_fragment, fragment).commit();
}else { //No Fragments
getSupportFragmentManager().beginTransaction().replace(R.id.framelayout_filter, fragment).commit();
}
...
}
谢谢。