简单api积累

1：查找获取到焦点的view

    

Runnable run2 = new Runnable() {

    @Override
    public void run() {
        while (true) {
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            View rootview = FormatOperationActivity.this.getWindow().getDecorView();
            View aaa = rootview.findFocus();
            Log.d(TAG, aaa.toString());
        }
    }
};