android 현재 포커스 얻어 오는 방법

마지막 포커스 뷰 찾기 
Fragment currentFragment = getSupportFragmentManager().findFragmentById(R.id.fragment); 
new CurrentFocusView(currentFragment.getView()); 
또는 
View tView = findViewById(R.id.fragment); 
new CurrentFocusView(tView); 

마지막으로 저장된 포커스 뷰 가져오기 
CurrentFocusView.mFocusView 또는 new CurrentFocusView().getFocusView(); 

=================== 현재 포커스 찾아서 focus view 저장하는 클래스 생성 ============ 

public class CurrentFocusView { 

    private final String TAG = IKeyEvent.TAG + this.getClass().getSimpleName(); 
    private View mRootView; 
    public static View mFocusView; 

    public CurrentFocusView() { 
    } 

    public CurrentFocusView(View view) { 
        mRootView = view; 
        findFocusView(mRootView); 
        android.util.Log.d(TAG, "CurrentFocusView: getFocusView()="+getFocusView()); 
    } 

    public View getFocusView() { 
        return mFocusView; 
    } 

    public void setFocusView(View focusView) { 
        mFocusView = focusView; 
    } 

    public synchronized void findFocusView(View view) { 

        if (view.hasFocus() == true) { 
            android.util.Log.d(TAG, "findFocusView: hasFocusView="+view); 
            setFocusView(view); 
        } 

        if (view instanceof ViewGroup) { 
            ViewGroup vg = (ViewGroup) view; 
            if (vg.getChildCount() > 0) { 
                for (int i = 0; i < vg.getChildCount(); i++) { 
                    findFocusView(vg.getChildAt(i)); 
                } 
            } 
        } 
    } 
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