如果用户使用键盘输入时间，TimePicker 仅显示分钟并设置最大分钟

Question

这就是我的时间选择器目前的样子。 我希望它只显示分钟，并且最多只显示 30 分钟。 它工作正常，但是当你用键盘输入时间时，它会将时间设置为 0，但我希望它达到最大值。 因此，如果用户输入 50，它应该变为 30，我该怎么做？ 我怎样才能隐藏时间选择器的时间，因为这里不需要它。

protected void onCreate(Bundle savedInstanceState) {
    System.out.println("Powernap");
    super.onCreate(savedInstanceState);
    setContentView(R.layout.powernap);
    TimePicker pn = (TimePicker) findViewById(R.id.tp_powernap);

    pn.setOnTimeChangedListener(StartTimeChangedListener);
    pn.setIs24HourView(true);
}

    private TimePicker.OnTimeChangedListener StartTimeChangedListener =
        new TimePicker.OnTimeChangedListener() {

        public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
            updateDisplay(view, hourOfDay, minute);          
        }
    };

    private TimePicker.OnTimeChangedListener NullTimeChangedListener =
        new TimePicker.OnTimeChangedListener() {

        public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {

        }
    };

    private void updateDisplay(TimePicker timePicker, int hourOfDay, int minute) { 

        // do calculation of next time 
        int nextMinute = 0;
        int nextHour = 0;
        if (minute > 30){
            System.out.println("Minute+30");
            nextMinute = 30;
            // set minute
            timePicker.setCurrentMinute(nextMinute);
        }
        else {          
            System.out.println("minute 0");
            nextMinute = 0;
        }
        if (hourOfDay != 0){
            System.out.println("hour>0");
            nextHour = 24;
        }

        // remove ontimechangedlistener to prevent stackoverflow/infinite loop
        timePicker.setOnTimeChangedListener(NullTimeChangedListener);

        // set minute
        timePicker.setCurrentMinute(timePicker.getCurrentMinute()+nextMinute);

        //set hour
        timePicker.setCurrentHour(nextHour);

        // hook up ontimechangedlistener again
        timePicker.setOnTimeChangedListener(StartTimeChangedListener);

    }

Answer 1

这就是我用最大和最小以及 5 分钟步骤完成部分的方法，stackoverflow 上有示例，但使用他们的方法你不能同时使用向上和向下按钮，用我的方法它可以工作：

public class Powernap extends Activity {



/** Called when the activity is first created. */
@Override
protected void onCreate(Bundle savedInstanceState) {
    System.out.println("Powernap");
    super.onCreate(savedInstanceState);
    setContentView(R.layout.powernap);
    TimePicker pn = (TimePicker) findViewById(R.id.tp_powernap);
    pn.setCurrentMinute(5);
    System.out.println("timepicker erstellt");
    pn.setDescendantFocusability(TimePicker.FOCUS_BLOCK_DESCENDANTS);
    System.out.println("Tastatur geblockt");
    pn.setOnTimeChangedListener(StartTimeChangedListener);
    System.out.println("starttimechangedlistener");
    pn.setIs24HourView(true);
}


    private TimePicker.OnTimeChangedListener StartTimeChangedListener =
        new TimePicker.OnTimeChangedListener() {

        public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
            updateDisplay(view, hourOfDay, minute);          
        }
    };

    private TimePicker.OnTimeChangedListener NullTimeChangedListener =
        new TimePicker.OnTimeChangedListener() {

        public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {

        }
    };

    private void updateDisplay(TimePicker timePicker, int hourOfDay, int minute) { 

        // do calculation of next time 
        int nextMinute = 0;
        int nextHour = 0;
        if (minute >= 30 && minute <= 59){
            System.out.println("Minute+30");
            nextMinute = 30;
        }
        else if(minute == 26){
            System.out.println("Minute auf 30");
            nextMinute = 30;
        }
        else if(minute == 25 || minute == 21 || minute == 29){
            System.out.println("Minute auf 25");
            nextMinute = 25;
        }
        else if(minute == 20 || minute == 16 || minute == 24){
            System.out.println("Minute auf 20");
            nextMinute = 20;
        }
        else if(minute == 15 || minute == 11 || minute == 19){
            System.out.println("Minute auf 15");
            nextMinute = 15;
        }
        else if(minute == 10 || minute == 6 || minute == 14){
            System.out.println("Minute auf 10");
            nextMinute = 10;
        }
        else if(minute == 5 || minute == 1 || minute == 9 || minute < 5){
            System.out.println("Minute auf 5");
            nextMinute = 5;
        }





        if (hourOfDay != 0){
            System.out.println("hour>0");
            nextHour = 24;
        }

        // remove ontimechangedlistener to prevent stackoverflow/infinite loop
        timePicker.setOnTimeChangedListener(NullTimeChangedListener);

        // set minute
        timePicker.setCurrentMinute(nextMinute);

        //set hour
        timePicker.setCurrentHour(nextHour);

        // hook up ontimechangedlistener again
        timePicker.setOnTimeChangedListener(StartTimeChangedListener);

    }

Answer 2

您将需要编写自己的小部件。 TimePicker 小部件或 TimePickerDialog 不支持您想要的功能。