Android(安卓)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() {@Overridepublic void onGlobalLayout() {// TODO Auto-generated method stub// 获取当前焦点所在ViewView 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：

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