方向更改後恢復動作模式

Question

我有啓動動作模式的listfragment。我正在使用actionbarsherlock。但是當方向發生變化時，或者當我開始新的活動時，上下文相關的actionbar消失。 有什麼辦法可以恢復它，而無需重新啓動它？在谷歌Gmail應用程序它保持在屏幕上，無論我旋轉手機或轉到詳細畫面。

Answer 1

更好的方法是使用onSaveInstanceState在循環前保存ActionMode狀態。

public abstract class MyActivity extends SherlockFragmentActivity{ 

    private boolean isInActionMode = false; 

    @Override 
    public void onCreate(Bundle state){ 
     super.onCreate(state); 

     if (state != null && state.getBoolean("ActionMode", false)){ 
       startActionMode(new MyActionMode()); 
     }else{ 
      ///whatever you'd normally do 
     } 
    } 

    @Override 
    public void onSaveInstanceState(Bundle outState) { 
     // Save isInActionMode value 
     outState.putBoolean("ActionMode", isInActionMode); 

     super.onSaveInstanceState(outState); 
    } 

    public void onWhateverEventNormallyStartsYourActionMode(){ 
     startActionMode(new MyActionMode()); 
    } 

    public class MyActionMode implements ActionMode.Callback{ 

     @Override 
     public boolean onCreateActionMode(ActionMode mode, Menu menu) { 
      isInActionMode = true; 
      ///whatever you'd normally do 
     } 

     @Override 
     public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 
      ///whatever you'd normally do 
     } 

     @Override 
     public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 
      ///whatever you'd normally do 
     } 

     @Override 
     public void onDestroyActionMode(ActionMode mode) { 
      isInActionMode = false; 
     } 
    } 
} 

根據Saran的評論更新。