Question

如何在此示例中获取TIME的值，以便我可以在我的主代码中使用它，这在save javaFile中。我试着做一个公共字符串时间，然后在代码中使用像clock1 = time;

为了更清楚我想要实现的目标：

这在我的主要代码中：

        spinner_dailyInput.setAdapter(adapter3);
        spinner_dailyInput.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
         public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                switch (position){

                    case 1:
                        for(int i=0;i<1;i++) {
                            setTimePicker();
                            clock1=time;
                        }

                        break;

这基本上是一个旋转，如果用户选择例如1，他将得到1（选择时间），现在我需要将他输入的时间保存到变量以供进一步使用。如果用户选择2例如他将获得一个时钟，输入时间点击保存（这需要保存到Clock1），然后弹出另一个时间戳（再次选择时间然后保存到Clock2）。

   public void setTimePicker(){
        Calendar mcurrentTime = Calendar.getInstance();
        final int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY);
        int minute = mcurrentTime.get(Calendar.MINUTE);
        TimePickerDialog mTimePicker;
        mTimePicker = new TimePickerDialog(getActivity(), new TimePickerDialog.OnTimeSetListener() {
            @Override
            public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
                hr=String.valueOf(selectedHour);
                mini=String.valueOf(selectedMinute);
                time=hr+":"+mini;
                Log.e(TAG+".........TimePicker.....................",time+"");

            }
        }, hour, minute, true);
        mTimePicker.setTitle("Select Time");
        mTimePicker.show();

    }

Answer 1

String time = null;
public void setTimePicker(){
        ...
        mTimePicker = new TimePickerDialog(getActivity(), new TimePickerDialog.OnTimeSetListener() {
            @Override
            public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
                ...
                time=hr+":"+mini;
            }
        }, hour, minute, true);
        ...
        //Here, time could still be null if mTimePicker.show(); is an asynchronous call (most likely)
    }

调用onTimeSet后，实例中的变量time将保留您想要的值。但是这个调用可以是异步，如果是这样，不希望直接在setTimePicker()调用结束时获取值，该值只会在用户输入值后发生在显示的TimerPickerDialog中。

Answer 2

     spinner_dailyInput.setAdapter(adapter3);
    spinner_dailyInput.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    @Override
     public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            switch (position){

                case 1:
                    for(int i=0;i<1;i++) {
                        setTimePicker(i);
                        //clock1=time; <--- wrong. time is still null here
                    }

                    break;
                    }
        }
    }

     public void setTimePicker(final int i){
            Calendar mcurrentTime = Calendar.getInstance();
            final int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY);
            int minute = mcurrentTime.get(Calendar.MINUTE);
            TimePickerDialog mTimePicker;
            mTimePicker = new TimePickerDialog(getActivity(), new TimePickerDialog.OnTimeSetListener() {
                @Override
                public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
                    hr=String.valueOf(selectedHour);
                    mini=String.valueOf(selectedMinute);
                    time=hr+":"+mini;
                    Log.e(TAG+".........TimePicker.....................",time+"");
                mySimpleCallback(i, time)';//<---- not null here
                }
            }, hour, minute, true);
            mTimePicker.setTitle("Select Time");
            mTimePicker.show();

        }


    private void mySimpleCallback(int i, String time ) {
    //not null here because it fires after your code execution
if (i == 0)
    clock1 = time;
else
clock2 = time;
    }

从void函数中获取时间值

2 个答案: