问题是每当我从DatePiker中选择日期时，它会在TextView显示当前日期
如何在TextView中设置所选日期？
如果我打开此活动，如何设置动态日期，然后在textview中自动设置。
在Code下面打开一个DatePiker对话框：
case R.id.llDueDate:
new DateTimePicker(this,null, startDateListner).showDateTimePicker();
break;
DateTimePiker.java
public class DateTimePicker {
public Activity mActivity;
private Date mDate;
private Calendar calendar;
private int year, month, day, hour, min;
private DateTimeSelectedListner listner;
public interface DateTimeSelectedListner {
public void onDateTimeSelected(Date date);
}
public DateTimePicker(Activity activity, Date date, DateTimeSelectedListner listner) {
this.mActivity = activity;
this.listner = listner;
this.calendar = Calendar.getInstance();
if(mDate != null){
this.mDate = mDate;
calendar.setTime(mDate);
} else {
mDate = calendar.getTime();
}
year = calendar.get(Calendar.YEAR);
month = calendar.get(Calendar.MONTH);
day = calendar.get(Calendar.DAY_OF_MONTH);
hour = calendar.get(Calendar.HOUR_OF_DAY);
min = calendar.get(Calendar.MINUTE);
}
public void showDateTimePicker(){
View v = mActivity.getLayoutInflater().inflate(R.layout.dialog_datetime, null);
DatePicker datePicker = (DatePicker) v.findViewById(R.id.datePicker);
TimePicker timePicker = (TimePicker) v.findViewById(R.id.timePicker);
datePicker.init(year, month, day, new DatePicker.OnDateChangedListener() {
public void onDateChanged(DatePicker view, int year, int month, int day) {
DateTimePicker.this.year = year;
DateTimePicker.this.month = month;
DateTimePicker.this.day = day;
updateDateTime();
}
});
timePicker.setCurrentHour(hour);
timePicker.setCurrentMinute(min);
timePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {
public void onTimeChanged(TimePicker view, int hour, int min) {
DateTimePicker.this.hour = hour;
DateTimePicker.this.min = min;
updateDateTime();
}
});
new AlertDialog.Builder(mActivity)
.setView(v)
.setTitle(R.string.date_picker_title)
.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
listner.onDateTimeSelected(mDate);
}
})
.create().show();
}
public void showDatePicker(){
View v = mActivity.getLayoutInflater().inflate(R.layout.dialog_date, null);
DatePicker datePicker = (DatePicker) v.findViewById(R.id.datePicker);
datePicker.init(year, month, day, new DatePicker.OnDateChangedListener() {
public void onDateChanged(DatePicker view, int year, int month, int day) {
DateTimePicker.this.year = year;
DateTimePicker.this.month = month;
DateTimePicker.this.day = day;
updateDateTime();
}
});
new AlertDialog.Builder(mActivity)
.setView(v)
.setTitle(R.string.title_select_date_of_birth)
.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
listner.onDateTimeSelected(mDate);
}
})
.create().show();
}
public void updateDateTime() {
mDate = new GregorianCalendar(year, month, day, hour, min).getTime();
}
}
以下代码是在 TextView
public DateTimePicker.DateTimeSelectedListner startDateListner = new DateTimePicker.DateTimeSelectedListner() {
@Override
public void onDateTimeSelected(Date date) {
txtDateTime.setText(Util.getInstance(AddTodoActivity.this).convertDateToddMMMyyyyhmma(date));
}
};
ConvertDateToddMMyyy 功能：
public String convertDateToddMMMyyyyhmma(Date mDate) {
String outputPattern = "dd-MMM-yyyy h:mm a";
SimpleDateFormat outputFormat = new SimpleDateFormat(outputPattern);
String str = outputFormat.format(mDate);
return str;
}
此对话框始终为当前日期而非选定日期，因此我错过了某些代码或错误
答案 0 :(得分：0)
试试这段代码：
final Calendar cal = Calendar.getInstance();
int year = cal.get(Calendar.YEAR);
int month = cal.get(Calendar.MONTH);
int day = cal.get(Calendar.DAY_OF_MONTH);
DatePickerDialog dp = new DatePickerDialog(Activity.this, new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
textView.setText(dayOfMonth + "-"
+ (monthOfYear + 1) + "-" + year);
}
}, year, month, day);
dp.show();
答案 1 :(得分：0)
更新dateTimePicker类
public class DateTimePicker {
public Activity mActivity;
private Date mDate;
private Calendar calendar;
private int year, month, day, hour, min;
private DatePickerDialog.OnDateSetListener listner;
private DatePickerDialog datePickerDialog;
public interface DateTimeSelectedListner {
public void onDateTimeSelected(Date date);
}
public DateTimePicker(Activity activity, Date date, DatePickerDialog.OnDateSetListener listner, Calendar calendar) {
this.mActivity = activity;
this.listner = listner;
this.calendar = calendar;
if (mDate != null) {
this.mDate = date;
calendar.setTime(mDate);
} else {
mDate = calendar.getTime();
}
year = calendar.get(Calendar.YEAR);
month = calendar.get(Calendar.MONTH);
day = calendar.get(Calendar.DAY_OF_MONTH);
hour = calendar.get(Calendar.HOUR_OF_DAY);
min = calendar.get(Calendar.MINUTE);
}
public void showDateTimePicker() {
datePickerDialog = new DatePickerDialog(mActivity, listner, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH));
datePickerDialog.setButton(DatePickerDialog.BUTTON_POSITIVE, "Done", datePickerDialog);
datePickerDialog.show();
}
// public void showDatePicker() {
// View v = mActivity.getLayoutInflater().inflate(R.layout.dialog_date, null);
// DatePicker datePicker = (DatePicker) v.findViewById(R.id.datePicker);
//
// datePicker.init(year, month, day, new DatePicker.OnDateChangedListener() {
// public void onDateChanged(DatePicker view, int year, int month, int day) {
// DateTimePicker.this.year = year;
// DateTimePicker.this.month = month;
// DateTimePicker.this.day = day;
// updateDateTime();
// }
// });
//
// new AlertDialog.Builder(mActivity)
// .setView(v)
// .setTitle("selected dob")
// .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
// public void onClick(DialogInterface dialog, int which) {
// listner.onDateTimeSelected(mDate);
// }
// })
// .create().show();
// }
public void updateDateTime() {
mDate = new GregorianCalendar(year, month, day, hour, min).getTime();
}
}
在班级中创建归档变量
public DatePickerDialog.OnDateSetListener startDateListner;
private Calendar calendar;
在oncreate of activity中调用此方法
private void initializezDatePickerAndCalendar() {
calendar = Calendar.getInstance();
startDateListner = new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
// TODO Auto-generated method stub
calendar.set(Calendar.YEAR, year);
calendar.set(Calendar.MONTH, monthOfYear);
calendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
setSelectedDate(calendar);
}
};
}
单击按钮显示Datepicker
时调用此方法 private void showDatePicker() {
new DateTimePicker(this, null, startDateListner, calendar).showDateTimePicker();
}
在您的活动中也添加此方法
private void setSelectedDate(Calendar myCalendar) {
String myFormat = "dd-MMM-yyyy h:mm a"; //In which you need put here
SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
String selectedDAte = sdf.format(myCalendar.getTime());
Toast.makeText(this, selectedDAte, Toast.LENGTH_LONG).show();
// here you can set date on textview
}