Android SearchView 焦点问题

问题：SearchView 在退出软键盘后，Focus依然存在的问题。并且还会抢其它控件Focus？在试过clearFocus后也依然不好使...

分析：原来当前焦点并不在SearchView 上，而是在它内部的 SearchAutoComplete mQueryTextView 上，所以SreachView  clearFoucus没有效果。

这是SearchView 设置焦点的代码，其中调用了 mQueryTextView.requestFocus(direction, previouslyFocusedRect); 

    /** @hide */
    @Override
    public boolean requestFocus(int direction, Rect previouslyFocusedRect) {
        // Don't accept focus if in the middle of clearing focus
        if (mClearingFocus) return false;
        // Check if SearchView is focusable.
        if (!isFocusable()) return false;
        // If it is not iconified, then give the focus to the text field
        if (!isIconified()) {
            boolean result = mQueryTextView.requestFocus(direction, previouslyFocusedRect);
            if (result) {
                updateViewsVisibility(false);
            }
            return result;
        } else {
            return super.requestFocus(direction, previouslyFocusedRect);
        }
    }

解决：

我要拿到mQueryTextView并且调用clearFocus(); 然后在调用SearchView.clearFocus();

首先监听软键盘弹起状态：view.getViewTreeObserver().addOnGlobalLayoutListener(); //通过给根布局View注册布局监听器

获取当前焦点所在View，判断是否是SearchView$SearchAutoComplete ，然后根据软键盘状态与当前焦点View，控制SearchView的焦点位置

Code：

	void regeKeyListener(final View v) {
		// 注册根View布局监听，监听布局大小改变
		v.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
			@Override
			public void onGlobalLayout() {
				// TODO Auto-generated method stub
				// 获取当前焦点所在View
				View currentFocus = getActivity().getCurrentFocus();
				String name = currentFocus.getClass().getName();
				Rect outRect = new Rect();
				v.getWindowVisibleDisplayFrame(outRect);
				// 计算比例，从而判断软键盘是否弹起
				double dl = 1.0 * outRect.bottom / v.getMeasuredHeight();
				if (dl < 0.8 && name.equals("android.widget.SearchView$SearchAutoComplete")) {
					if (!isKeyUp) {
						isKeyUp = true;
					}
				} else if (isKeyUp) {
					currentFocus.clearFocus();
					mSearchView.clearFocus();
					isKeyUp = false;
				}

			}
		});
	}

效果：