我需要使用DatePickerDialog在TextView中获取所选日期。当我点击TextView时,应该出现DatePickerDialog。
我写了以下代码:
我写了以下代码:
private DatePickerDialog.OnDateSetListener dateOnDateSetListener = new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDay) {
datePick.setText(new StringBuilder().append(selectedDay).append("-").append(selectedMonth).append("-").append(selectedYear));
}
};
datePick = (TextView) findViewById(R.id.date_pick);
datePick.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Calendar calendar = Calendar.getInstance();
year = calendar.get(Calendar.YEAR);
monthOfYear = calendar.get(Calendar.MONTH);
dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);
new DatePickerDialog(getContext(), dateOnDateSetListener, year, monthOfYear, dayOfMonth);
}
});
但是它不起作用。 通过一点谷歌搜索,我将其更改为以下内容,它有效,但我无法理解为什么?我在上面的代码中弄错了什么吗?
datePick = (TextView) findViewById(R.id.date_pick);
datePick.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Calendar calendar = Calendar.getInstance();
year = calendar.get(Calendar.YEAR);
monthOfYear = calendar.get(Calendar.MONTH);
dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);
showDialog(DATE_DIALOG_ID);
}
});
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_DIALOG_ID:
// set date picker as current date
return new DatePickerDialog(this, dateOnDateSetListener,
year, monthOfYear,dayOfMonth);
}
return null;
}
private DatePickerDialog.OnDateSetListener dateOnDateSetListener = new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDay) {
datePick.setText(new StringBuilder().append(selectedDay).append("-").append(selectedMonth).append("-").append(selectedYear));
}
};