由于Android不支持显示日期,我在我的布局中添加了TextView.

在DatePicker上我放了一个onDateChangedListener.当日期改变时,我确定星期几,然后通过处理程序设置它以确保它在UI线程上完成：

// this is being called when the date changes on the DatePicker
public void onDateChanged(DatePicker view, final int year,
                final int monthOfYear, final int dayOfMonth) {
    String dayOfTheWeek = null;

    // some code here to set the 'dayOfTheWeek' string

    h.sendMessage(h.obtainMessage(0, dayOfTheWeek));
}

final Handler h = new Handler() {
    @Override
    public void handleMessage(Message msg) {
        dayOfWeekTextView.setText((String)msg.obj);
    }
};

我的问题：当我滚动窗口小部件(Android 4.0 UI)中的日子时,它不顺畅！我检查问题是什么,这不是我确定String应该是什么的方式,它实际上是Handler中的setText().评论那部分uit,一切都很好.同时在那里设置硬编码文本(dayOfWeekTextView.setText(“SOMETHING”);)会产生同样的问题.它会抖动DatePicker.

setText()真的是一个很大的动作吗？奇妙清单显示了星期几,并且运行平稳,但我无法知道他们是如何做到的.

我只在HTC One X上测试过它.
有人有想法吗？

Edit:

I found out why it is smooth in Wunderlist! I am using the same as them, a DialogFragment. You can set a title on the dialog and that is what Wunderlist uses instead of a TextView. So I’m going to use that (and looks better too