java 安卓:TimePickerDialog阻止用户选择过去时间，并可以使用新日期选择未来时间

Question

我正在使用这个链接Android TimePickerDialog set max time

我是安卓新手。在这段代码的帮助下，我不能选择过去的时间，但我们不能选择未来的时间。当在timepickerdialog模式中选择12时，根据第二天而不是过去一天自动更改为am

Answer 1

请尝试以下代码：

TimePickerFragment timePickerFragment = new TimePickerFragment();
            timePickerFragment.setOnTimeSetListener(new OnTimeSetListener() {
                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    Calendar datetime = Calendar.getInstance();
                    Calendar c = Calendar.getInstance();
                    datetime.set(Calendar.HOUR_OF_DAY, hourOfDay);
                    datetime.set(Calendar.MINUTE, minute);
                    if (datetime.getTimeInMillis() >= c.getTimeInMillis()) {
                        //it's after current
                         int hour = hourOfDay % 12;
                    btnPickStartTime.setText(String.format("%02d:%02d %s", hour == 0 ? 12 : hour,
                            minute, hourOfDay < 12 ? "am" : "pm"));
                    } else {
                        //it's before current'
                        Toast.makeText(getApplicationContext(), "Invalid Time", Toast.LENGTH_LONG).show();
                    }
                }
            });
            timePickerFragment.show(getSupportFragmentManager(), "TIME");

它将显示timepicker对话框，如果用户选择当前时间之前的任何时间。。。它将显示无效时间

编辑 您需要导入：

import android.app.TimePickerDialog;
import android.app.Fragment;
import android.app.DialogFragment;
import java.util.Calendar;
import android.widget.TimePicker;

这是一个很好的Example

Answer 2

最好的解决方案是使用this材质设计库选择时间或日期并设置最小值

    TimePickerDialog tpd = TimePickerDialog.newInstance(
        new TimePickerDialog.OnTimeSetListener() {
            @Override
            public void onTimeSet(TimePickerDialog view, int hourOfDay, int minute, int second) {
                //put some interesting code
            }
        },
        now.get(Calendar.HOUR_OF_DAY),
        now.get(Calendar.MINUTE),
        true
    );
    tpd.setMinTime(10, 0, 0); // MIN: hours, minute, secconds
    tpd.show(getFragmentManager(), "TimePickerDialog");

The easiest way to add the Material DateTime Picker library to your project is by adding it as a dependency to your build.gradle

dependencies {
    compile 'com.wdullaer:materialdatetimepicker:3.0.0'
}

希望这对你有帮助