我正在使用DatePicker
作为我的申请。我想获得我选择的日期(在DatePicker
上),但它没有返回所选日期。它总是返回当前日期。如何从DatePicker
获取所选日期?
任何帮助将不胜感激。
day = pickDate.getDayOfMonth();
month = pickDate.getMonth() + 1;
year = pickDate.getYear();
readAndChoose = (Button) findViewById(R.id.btnReadAndChoose);
readAndChoose.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Context context = getApplicationContext();
CharSequence text = "" + day + "-" + "" + month + "-" + ""
+ year;
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
/*
* Intent i = new Intent(BirthActivity.this,
* CompassActivity.class); startActivity(i);
*/
}
});
我不想创建DatePicker
对话框,但我想使用Android提供的DatePicker。
答案 0 :(得分:3)
private DatePickerDialog.OnDateSetListener datePickerListener
= new DatePickerDialog.OnDateSetListener() {
// when dialog box is closed, below method will be called.
public void onDateSet(DatePicker view, int selectedYear,
int selectedMonth, int selectedDay) {
year = selectedYear;
month = selectedMonth;
day = selectedDay;
// set selected date into textview
tvDisplayDate.setText(new StringBuilder().append(month + 1)
.append("-").append(day).append("-").append(year)
.append(" "));
// set selected date into datepicker also
dpResult.init(year, month, day, null);
}
};
参考此链接。可能会对您有所帮助。:http://www.mkyong.com/android/android-date-picker-example/
答案 1 :(得分:2)
public class pickerdate extends Activity {
/** Called when the activity is first created. */
private TextView mDateDisplay;
private Button mPickDate;
private int mYear;
private int mMonth;
private int mDay;
static final int DATE_DIALOG_ID = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mDateDisplay = (TextView) findViewById(R.id.dateDisplay);
mPickDate = (Button) findViewById(R.id.pickDate);
mPickDate.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog(DATE_DIALOG_ID);
}
});
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
updateDisplay();
}
private void updateDisplay() {
mDateDisplay.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(mMonth + 1).append("-")
.append(mDay).append("-")
.append(mYear).append(" "));
}
private DatePickerDialog.OnDateSetListener mDateSetListener =
new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
mYear = year;
mMonth = monthOfYear;
mDay = dayOfMonth;
updateDisplay();
}
};
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_DIALOG_ID:
return new DatePickerDialog(this,
mDateSetListener,
mYear, mMonth, mDay);
}
return null;
}
}
主布局文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView android:id="@+id/dateDisplay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""/>
<Button android:id="@+id/pickDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Date Picker"/>
</LinearLayout>
以上代码有效。我希望这正是你所期待的。
答案 2 :(得分:2)
有两种方法可以做到这一点:
使用init()
传递DatePicker
的{{1}}方法。
OnDateChangedListener
点击按钮或覆盖 datePicker.init(
datePicker.getYear(), datePicker.getMonth(), datePicker.getDayOfMonth(),
new DatePicker.OnDateChangedListener() {
@Override
public void onDateChanged(DatePicker datePicker, int year, int monthOfYear, int dayOfMonth) {
selectedYear = year;
selectedMonth = monthOfYear;
selectedDayOfMonth = dayOfMonth;
Log.d(LOG_TAG, "selectedDate = " + selectedYear + "-" + selectedMonth + "-" + selectedDayOfMonth );
//TODO save or use selected value here
}//end onDateChangedListener
});
,以便在采取特定操作或用户离开屏幕时获取当前选择的日期。
onPause
答案 3 :(得分:1)
我认为这就是你需要的
// the call back received when the user "sets" the date in the dialog
private DatePickerDialog.OnDateSetListener mDateSetListener =
new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
mYear = year;
mMonth = monthOfYear;
mDay = dayOfMonth;
}
};
答案 4 :(得分:0)
Dj的答案会奏效。如果您想使用日历变量来存储日期,那么
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
setDate.set(year, monthOfYear, dayOfMonth);
希望这有帮助!
答案 5 :(得分:0)
还有一个很棒的教程here,它也有源代码可供下载。
有一点需要注意,在编译源代码时,需要在javapapers代码中使SelectDateFragment类为“static”,并使populateSetDate()方法为static,我也移动了这段代码:
mEdit = (EditText)findViewById(R.id.editText1);
到onCreate()方法。之后,您就可以编译代码了。
MainActivity在编辑后最终应该如下所示:
package com.javapapers.andoiddatepicker;
import java.util.Calendar;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.widget.DatePicker;
import android.widget.EditText;
public class MainActivity extends FragmentActivity {
private static EditText mEdit;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mEdit = (EditText) findViewById(R.id.editText1);
}
public void selectDate(View view) {
DialogFragment newFragment = new SelectDateFragment();
newFragment.show(getSupportFragmentManager(), "DatePicker");
}
public static void populateSetDate(int year, int month, int day) {
mEdit.setText(month + "/" + day + "/" + year);
}
public static class SelectDateFragment extends DialogFragment implements
DatePickerDialog.OnDateSetListener {
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current date as the default date in the picker
final Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
int day = c.get(Calendar.DAY_OF_MONTH);
// Create a new instance of DatePickerDialog and return it
return new DatePickerDialog(getActivity(), this, year, month, day);
}
public void onDateSet(DatePicker view, int year, int month, int day) {
populateSetDate(year, month+1, day);
}
}
}
答案 6 :(得分:-1)
private void openCalendar() {
DatePickerDialog dialog = new DatePickerDialog(getContext(), (view, year, month, dayOfMonth) -> {
date = getDateString(year, month, dayOfMonth);
}, mYear, mMonth, mDay);
dialog.show();
}
private String getDateString(int year, int mMonth, int mDay) {
Calendar calendar = Calendar.getInstance();
calendar.set(year, mMonth, mDay);
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
return dateFormat.format(calendar.getTime());
}