如何在Android中的TimePickerDialog中设置自定义分钟间隔

时间:2011-10-10 13:32:12

标签: java android intervals timepicker

我有一个TimePickerDialog工作来设置时间,设置为TextView以显示它。现在,我需要帮助将TimePicker(在TimePickerDialog内)的minutues间隔设置为15分钟。我已经看到有一个与TimePicker相关的15分钟间隔问题的帖子,但我不知道如何将它应用于TimePickerDialog,因为我不知道如何使用它在TimePickerDialog中创建的TimePicker。我是Android新手,完全迷失在这件事上。提前谢谢。

4 个答案:

答案 0 :(得分:14)

使用来自@Rizwan和this其他线程的this的组合,我提出了一个组合解决方案,允许TimePickerDialog中的任意分钟增量。主要问题是大多数功能都被android TimePickerDialogTimePicker类隐藏,并且它似乎不是

  1. 扩展TimePickerDialog以便我们更轻松地访问
  2. 使用反射到达显示器内部并访​​问所需位(见下文)
  3. 重新连接分钟'NumberPicker'以显示我们的值
  4. 重新接收TimePicker以接收和返回NumberPicker尊重我们自定义增量的值。
  5. 阻止 onStop(),以便在关闭时不重置该值。
  6. 警告

    到达UI内部的主要问题是元素由可能更改的ID引用,甚至id的名称也不能保证永远相同。话虽如此,这是一个有效,稳定的解决方案,并且可能在可预见的未来发挥作用。在我看来,空的catch块应该警告UI已经改变并且应该回到默认(增量1分钟)行为。

    解决方案

        private class DurationTimePickDialog extends TimePickerDialog
        {
            final OnTimeSetListener mCallback;
            TimePicker mTimePicker;
            final int increment;
    
            public DurationTimePickDialog(Context context, OnTimeSetListener callBack, int hourOfDay, int minute, boolean is24HourView, int increment)
            {
                super(context, callBack, hourOfDay, minute/increment, is24HourView);
                this.mCallback = callBack;
                this.increment = increment;
            }
    
            @Override
            public void onClick(DialogInterface dialog, int which) {
                    if (mCallback != null && mTimePicker!=null) {
                        mTimePicker.clearFocus();
                        mCallback.onTimeSet(mTimePicker, mTimePicker.getCurrentHour(),
                                mTimePicker.getCurrentMinute()*increment);
                    }
            }
    
            @Override
            protected void onStop()
            {
                // override and do nothing
            }
    
            @Override
            protected void onCreate(Bundle savedInstanceState)
            {
                super.onCreate(savedInstanceState);
                try
                {
                    Class<?> rClass = Class.forName("com.android.internal.R$id");
                    Field timePicker = rClass.getField("timePicker");
                    this.mTimePicker = (TimePicker)findViewById(timePicker.getInt(null));
                    Field m = rClass.getField("minute");
    
                    NumberPicker mMinuteSpinner = (NumberPicker)mTimePicker.findViewById(m.getInt(null));
                    mMinuteSpinner.setMinValue(0);
                    mMinuteSpinner.setMaxValue((60/increment)-1);
                    List<String> displayedValues = new ArrayList<String>();
                    for(int i=0;i<60;i+=increment)
                    {
                        displayedValues.add(String.format("%02d", i));
                    }
                    mMinuteSpinner.setDisplayedValues(displayedValues.toArray(new String[0]));
                }
                catch (Exception e)
                {
                    e.printStackTrace();
                }
            }
        }
    
    }
    

    构造函数接受增量值并保留其他一些引用。请注意,这省略了错误检查,我们更喜欢60%increment==0

    onCreate 使用UI字段和反射的名称来发现当前位置。这再次省略了错误检查,应该是“故障安全”,即如果出现问题则恢复默认行为。

    onClick 重写以将正确的分钟值返回给回调侦听器

    重写

    onStop 以防止在对话框关闭时第二次返回(不正确的)索引值。继续,亲自尝试。

    其中大部分来自于挖掘TimePickerDialog源代码。

答案 1 :(得分:11)

如果您使用时间选择器而不是时间选择器对话框那么这很好。但实际上有一个解决方案..这是我用来满足相同要求的..我使用CustomTimePickerDialog。每件事都是一样的,只有TimePickerDialog会在代码中更改为CustomTimePickerDialog。

CustomTimePickerDialog timePickerDialog = new CustomTimePickerDialog(myActivity.this, timeSetListener, 
            Calendar.getInstance().get(Calendar.HOUR), 
            CustomTimePickerDialog.getRoundedMinute(Calendar.getInstance().get(Calendar.MINUTE) + CustomTimePickerDialog.TIME_PICKER_INTERVAL), 
            false
);
timePickerDialog.setTitle("2. Select Time");
timePickerDialog.show();

这是我的CustomTimePickerDialog类...只需在项目中使用此类并将TimePickerDialog更改为CustomTimePickerDialog ..

public class CustomTimePickerDialog extends TimePickerDialog{

    public static final int TIME_PICKER_INTERVAL=10;
    private boolean mIgnoreEvent=false;

    public CustomTimePickerDialog(Context context, OnTimeSetListener callBack, int hourOfDay, int minute,
        boolean is24HourView) {
    super(context, callBack, hourOfDay, minute, is24HourView);
    }
/*
 * (non-Javadoc)
 * @see android.app.TimePickerDialog#onTimeChanged(android.widget.TimePicker, int, int)
 * Implements Time Change Interval
 */
    @Override
    public void onTimeChanged(TimePicker timePicker, int hourOfDay, int minute) {
        super.onTimeChanged(timePicker, hourOfDay, minute);
        this.setTitle("2. Select Time");
        if (!mIgnoreEvent){
            minute = getRoundedMinute(minute);
            mIgnoreEvent=true;
            timePicker.setCurrentMinute(minute);
            mIgnoreEvent=false;
        }
    }

    public static int getRoundedMinute(int minute){
         if(minute % TIME_PICKER_INTERVAL != 0){
            int minuteFloor = minute - (minute % TIME_PICKER_INTERVAL);
            minute = minuteFloor + (minute == minuteFloor + 1 ? TIME_PICKER_INTERVAL : 0);
            if (minute == 60)  minute=0;
         }

        return minute;
    }
}

使用此CustomTimePickerDialog类之后,您需要做的只是在代码中使用CustomTimePickerDialog而不是TimePickerDialog来访问/覆盖TimePickerDialog类的默认函数。简单来说,我的意思是你的timeSetListener将在此之后如下......

private CustomTimePickerDialog.OnTimeSetListener timeSetListener = new CustomTimePickerDialog.OnTimeSetListener() {
    @Override
    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {

    }
}// using CustomTimePickerDialog

答案 2 :(得分:1)

您可以使用常规AlertDialog并使用setView包含自定义TimePicker视图。

答案 3 :(得分:0)

/**
 * Set TimePicker interval by adding a custom minutes list
 * TIME_PICKER_INTERVAL = Enter your Minutes;
 * @param timePicker
 */
private void setTimePickerInterval(TimePicker timePicker) {
    try {
        int TIME_PICKER_INTERVAL = 10;
        NumberPicker minutePicker = (NumberPicker) timePicker.findViewById(Resources.getSystem().getIdentifier(
                "minute", "id", "android"));
        minutePicker.setMinValue(0);
        minutePicker.setMaxValue((60 / TIME_PICKER_INTERVAL) - 1);
        List<String> displayedValues = new ArrayList<String>();
        for (int i = 0; i < 60; i += TIME_PICKER_INTERVAL) {
            displayedValues.add(String.format("%02d", i));
        }
        minutePicker.setDisplayedValues(displayedValues.toArray(new String[0]));
    } catch (Exception e) {
        Log.e(TAG, "Exception: " + e);
    }
}