Java 日期选择器和时间选择器 - 设置最大值和最小值
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时间：2020-08-11 15:28:34 来源:igfitidea点击:
Datepicker and timepicker - set max and min values
提问by Banana
I am trying to make something like a reminder app. I want to allow the user to select date and time that is not now (at least 5 minutes from now), and I also want to disable the user from selecting a date that is too far away - 30 days for example. I created datePicker and timePicker, made them pop up on button click, but could not find way to set the min and max values.
我正在尝试制作类似提醒应用程序的东西。我希望允许用户选择不是现在的日期和时间（至少 5 分钟后），并且我还希望禁止用户选择太远的日期 - 例如 30 天。我创建了 datePicker 和 timePicker，使它们在单击按钮时弹出，但找不到设置最小值和最大值的方法。
public void showDateDialog() {
btnDate = (Button) findViewById(R.id.buttonDate);
btnDate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showDialog(DATE_DIALOG_ID);
}
});
}
public void showTimeDialog() {
btnTime = (Button) findViewById(R.id.buttonTime);
btnTime.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showDialog(TIME_DIALOG_ID);
}
});
}
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_DIALOG_ID:
// create a new DatePickerDialog with values you want to show
return new DatePickerDialog(this, datePickerListener, yearSet, monthSet, daySet);
// create a new TimePickerDialog with values you want to show
case TIME_DIALOG_ID:
return new TimePickerDialog(this, timePickerListener, hourSet, minuteSet, false);
}
return null;
}
private DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
yearSet = year;
monthSet = monthOfYear + 1;
daySet = dayOfMonth;
btnDate.setText(new SimpleDateFormat("DD").format(daySet) + "-" + new SimpleDateFormat("MMM").format(monthSet) + "-" + yearSet);
}
};
private TimePickerDialog.OnTimeSetListener timePickerListener = new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hour, int minute) {
hourSet = hour;
minuteSet = minute;
btnTime.setText(hourSet + ":" + new SimpleDateFormat("MM").format(hourSet));
}
};
采纳答案by Dhinakaran Thennarasu
try this:
尝试这个：
btnDate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
}
};
Calendar c = Calendar.getInstance();
int mYear = c.get(Calendar.YEAR);
int mMonth = c.get(Calendar.MONTH);
int mDay = c.get(Calendar.DAY_OF_MONTH);
final DatePickerDialog datePickerDialog = new DatePickerDialog(
Main23Activity.this, datePickerListener,
mYear, mMonth, mDay);
DatePicker datePicker = datePickerDialog.getDatePicker();
c.add(Calendar.MONTH, +1);
long oneMonthAhead = c.getTimeInMillis();
datePicker.setMaxDate(oneMonthAhead);
datePicker.setMinDate(System.currentTimeMillis() - 1000);
datePickerDialog.show();
}
});
btnTime.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
TimePickerDialog.OnTimeSetListener timePickerListener = new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hour, int minute) {
}
};
Calendar c = Calendar.getInstance();
final TimePickerDialog timePickerDialog = new TimePickerDialog(Main23Activity.this,timePickerListener,
c.get(Calendar.HOUR_OF_DAY),c.get(Calendar.MINUTE)+5,false);
timePickerDialog.show();
}
});
You need to check if the user selects today date and the time is less than the current time condition though.
您需要检查用户是否选择今天的日期并且时间小于当前时间条件。
回答by Narendra Motwani
For DataOicker Try this
对于 DataOicker 试试这个
public class MainActivity extends Activity {
TextView txtDatePicker;
Calendar cal,cal1;
long maxDate;
Date date;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
cal = Calendar.getInstance();
cal1 = Calendar.getInstance();
txtDatePicker = (TextView) findViewById(R.id.txtDatePicker);
txtDatePicker.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
DatePickerDialog dialog = new DatePickerDialog(MainActivity.this, new OnDateSetListener() {
@Override
public void onDateSet(DatePicker arg0, int arg1, int arg2, int arg3) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, ""+arg1+"/"+(arg2+1)+"/"+arg3, Toast.LENGTH_SHORT).show();
}
}, cal.YEAR, cal.MONTH, cal.DAY_OF_MONTH);
dialog.getDatePicker().setMinDate(System.currentTimeMillis());
cal1.add(Calendar.YEAR, 5);
dialog.getDatePicker().setMaxDate(cal1.getTimeInMillis());
dialog.show();
}
});
}
}
For TimePicker try this exampel
对于 TimePicker 试试这个例子
回答by Banana
I combined the date and time pickers and added a condition to timePicker.
我结合了日期和时间选择器并向 timePicker 添加了条件。
public class TestActivity extends Activity {
private Button mPickDate;
private TextView mDateDisplay;
private TextView mTimeDisplay;
final Calendar c = Calendar.getInstance();
private int mYear = c.get(Calendar.YEAR);
private int mMonth = c.get(Calendar.MONTH);
private int mDay = c.get(Calendar.DAY_OF_MONTH);
private int mHour = c.get(Calendar.HOUR_OF_DAY);
private int mMinute = c.get(Calendar.MINUTE);
static final int TIME_DIALOG_ID = 1;
static final int DATE_DIALOG_ID = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
});
mDateDisplay = (TextView) findViewById(R.id.dateTextView);
mPickDate = (Button) findViewById(R.id.datepicker);
mTimeDisplay = (TextView) findViewById(R.id.timeTextView);
mPickDate.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog(DATE_DIALOG_ID);
}
});
});
mPickDate.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog(DATE_DIALOG_ID);
}
});
}
// Update date and time
private void updateDate() {
mDateDisplay.setText(
new StringBuilder()
.append(mDay).append("/")
.append(mMonth + 1).append("/")
.append(mYear).append(" "));
showDialog(TIME_DIALOG_ID);
}
public void updateTime() {
mTimeDisplay.setText(
new StringBuilder()
.append(pad(mHour)).append(":")
.append(pad(mMinute)));
}
private static String pad(int c) {
if (c >= 10)
return String.valueOf(c);
else
return "0" + String.valueOf(c);
}
// Generate DatePickerDialog and TimePickerDialog
private DatePickerDialog.OnDateSetListener mDateSetListener =
new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
mYear = year;
mMonth = monthOfYear;
mDay = dayOfMonth;
updateDate();
}
};
private TimePickerDialog.OnTimeSetListener mTimeSetListener =
new TimePickerDialog.OnTimeSetListener() {
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
mHour = hourOfDay;
mMinute = minute;
Calendar c2 = Calendar.getInstance();
if (mYear == c2.get(Calendar.YEAR)
&& mMonth == c2.get(Calendar.MONTH)
&& mDay == c2.get(Calendar.DAY_OF_MONTH)
&& (mHour < c2.get(Calendar.HOUR_OF_DAY) || (mHour == c2.get(Calendar.HOUR_OF_DAY) && mMinute <= (c2.get(Calendar.MINUTE)+10))
)
) {
Toast.makeText(TestActivity.this, "Set time at least 10 minutes from now", Toast.LENGTH_LONG).show();
} else {
updateTime();
}
}
};
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_DIALOG_ID:
DatePickerDialog datePickerDialog = new DatePickerDialog(this,
mDateSetListener,
mYear, mMonth, mDay);
c.add(Calendar.MONTH, +1);
long oneMonthAhead = c.getTimeInMillis();
datePickerDialog.getDatePicker().setMaxDate(oneMonthAhead);
datePickerDialog.getDatePicker().setMinDate(System.currentTimeMillis() - 1000);
return datePickerDialog;
case TIME_DIALOG_ID:
TimePickerDialog timePickerDialog =
new TimePickerDialog(this,
mTimeSetListener, mHour, mMinute, false);
return timePickerDialog;
}
return null;}
}
