例如，当我在 18:00 创建这个 timePicker(below) 时，timePicker 的时间值将是 06:00。在 19:44->07:44... 所以从 AM/PM 切换到 24h 模式后它不会移动到正确的当前时间。我该如何改变它？ 我的目标是 timePicker 显示它创建时的当前时间。就像我在 AM/PM 模式下使用它时一样。

TimePicker timePicker = (TimePicker) convertView.findViewById(R.id.time_picker);
timePicker.setIs24HourView(true);

对错误的表述表示抱歉，希望您能理解我的问题。否则就问。

更新:

public class ChooseTimeViewDialog extends AlertDialog {

    protected Context context;


    public ChooseTimeViewDialog(final Context context) {
        super(context);     
        this.context = context;
    }

    public void onCreate(Bundle savedInstanceState) {
        LayoutInflater inflater = this.getLayoutInflater();

        View convertView = inflater.inflate(R.layout.dialog_choose_time_view, null);
        setContentView(convertView);
        setTitle(R.string.title_dialog_choose_time_view);

        final TimePicker taskTimePicker = (TimePicker) convertView.findViewById(R.id.dctv_task_time_picker);
        taskTimePicker.setIs24HourView(true);


        setButton(DialogInterface.BUTTON_POSITIVE, "Choose", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                int hour = taskTimePicker.getCurrentHour();
                int minute = taskTimePicker.getCurrentMinute();

                Calendar cal = new GregorianCalendar();
                cal.set(0, 0, 0, hour, minute, 0);

                ((AddTaskViewActivity) context).setSelectedTime(cal.getTime());
            }
        });
        setButton(DialogInterface.BUTTON_NEUTRAL, "No time", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                ((AddTaskViewActivity) context).setSelectedTime(null);
            }
        });

    }

}

XML:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <TimePicker
        android:id="@+id/dctv_task_time_picker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true" />

</RelativeLayout>

在我将初始化移动到 onCreate 并使用 setContentView(View) 之后，对话框的背景是透明的，它是全屏的并且没有按钮..为什么？

最佳答案

I can use timePicker.setCurrentHour(new Date().getHours()), but that's not the solution I want. It should be possible to solve it in a better way.

查看 source code ，这是 API 10 之后某个时候出现的错误:

public void setIs24HourView(Boolean is24HourView) {
    if (mIs24HourView == is24HourView) {
        return;
    }
    mIs24HourView = is24HourView; 
    // cache the current hour since spinner range changes
    int currentHour = getCurrentHour();
    updateHourControl();
    // set value after spinner range is updated
    setCurrentHour(currentHour);
    updateAmPmControl();
}

正确的顺序是:

// cache the current hour since spinner range changes
int currentHour = getCurrentHour();
mIs24HourView = is24HourView;

因为 getCurrentHour() 依赖于 mIs24HourView 返回 1-12 或 0-23...

但是在更新和部署源代码之前，您别无选择。您需要在 setIs24HourView() 之后自己调用 setCurrentHour()。

关于android - 切换到 24h 后 TimePicker 小时不更新，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13662288/