如果使用键盘我如何捕获一个TimePicker当时间的变化？ [英] How can I capture when time changes in a TimePicker if the keyboard is being used?

问题描述

我有一个小窗口是一个TimePicker检索保存在一个场中的数据库所需的时间。

I have a widget which is a TimePicker that retrieves the time saved in a field in a database.

的是，当用户改变在插件的时间值，这是不被保存在数据库中。

Thing is that when the user changes the time value in the widget, this is not being saved in the database.

所以，我遇到了 setOnTimeChangedListener 方法用得好好的，如果你只使用加号和减号的小部件。如果您使用的是关键字它并没有捕捉到变化。

So I came across the setOnTimeChangedListener method that works like a charm, if you are only using the plus and minus signs in the widget. It does not capture the change if you are using the keyword.

下面是我的code：

pickedTime.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {

        public void onTimeChanged(TimePicker arg0, int arg1, int arg2) {
            System.out.println("What time is it? "
                    + String.valueOf(arg0.getCurrentHour()) + ":"
                    + String.valueOf(arg0.getCurrentMinute()));
        }

    });

我也没能成功：

I've also tried unsuccessfully:

pickedTime.setOnFocusChangeListener 和 pickedTime.setOnKeyListener 的方法。

推荐答案

由于mon3t发现，该选项是设置机器人：XML文件中AddStatesFromChildren =真，如：

As mon3t found out, the option is to set android:AddStatesFromChildren="true" in the XML file, as:

<DatePicker
    android:id="@+id/datePicker"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:addStatesFromChildren="true" />
<TimePicker
    android:id="@+id/timePicker"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:addStatesFromChildren="true" />

也可以设置通过code：

Or you can set that by code:

    datePicker.setAddStatesFromChildren(true);
    timePicker.setAddStatesFromChildren(true);

我实在不明白什么是默认的一点是现在这个样子。

I really cannot understand what is the point of the default being the way it is.

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