自动关闭DatePickerDialog

Question

我使用下面的代码从一个DatePickerDialog创建一个EditText。

import android.widget.DatePicker;
import android.app.DatePickerDialog;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;

Calendar myCalendar = Calendar.getInstance();

String myFormat = "MM/dd/yy";
SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);

@Override
    protected void onCreate(Bundle savedInstanceState) {

EditText datePicker = (EditText) findViewById(R.id.popUpDate);
datePicker.setText(sdf.format(myCalendar.getTime()));

datePicker.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {
        new DatePickerDialog(AddAccount.this, R.style.AppTheme_Dialog, new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker view, int year, int monthOfYear,
                                  int dayOfMonth) {
                myCalendar.set(Calendar.YEAR, year);
                myCalendar.set(Calendar.MONTH, monthOfYear);
                myCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
                datePicker.setText(sdf.format(myCalendar.getTime()));
            }
        }, myCalendar.get(Calendar.YEAR), myCalendar.get(Calendar.MONTH),
                myCalendar.get(Calendar.DAY_OF_MONTH)).show();
    }
});
}

是否可以在选定日期后自动关闭默认日期？或者这需要对datepicker小部件进行完整的重拍吗？

Answer 1

创建一个MyPicker类:)

    import static yourPackageName.MainActivity.sdf; // get static imports


    public class MyPicker extends DatePickerDialog {

    Context context;
    @Override
    public DatePicker getDatePicker() {
        return super.getDatePicker();
    }


    public MyPicker(Context context, int themeResId, OnDateSetListener listener, int year, int monthOfYear, int dayOfMonth) {
        super(context, themeResId, listener, year, monthOfYear, dayOfMonth);
        this.context = context;
    }

    @Override
    public void onDateChanged(DatePicker view, int year, int month, int dayOfMonth) {
        myCalendar.set(Calendar.YEAR, year);
        myCalendar.set(Calendar.MONTH, month);
        myCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
        datePicker.setText(sdf.format(myCalendar.getTime()));
        datePickerDialog.dismiss();
    }
}

现在假设您在MainActivity中的主类

public class MainActivity extends AppCompatActivity {


    public static Calendar myCalendar = Calendar.getInstance();


    public static String myFormat = "MM/dd/yy";
    public static SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
    public static EditText datePicker;
    public static MyPicker datePickerDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        datePicker = (EditText) findViewById(R.id.popUpDate);
        datePicker.setText(sdf.format(myCalendar.getTime()));

        datePicker.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                datePickerDialog = new MyPicker(MainActivity.this, R.style.AppTheme_Dialog, new DatePickerDialog.OnDateSetListener() {
                    @Override
                    public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                    }
                }, myCalendar.get(Calendar.YEAR), myCalendar.get(Calendar.MONTH), myCalendar.get(Calendar.DAY_OF_MONTH));
                datePickerDialog.show();
            }

        });
    }

}
}

或者如果您不需要应用样式

public class MainActivity extends AppCompatActivity {

    public  String myFormat = "MM/dd/yy";
    public  SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
    public  EditText datePicker;
    final Calendar calendar = Calendar.getInstance();
    private DatePickerDialog datePickerDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        datePicker = (EditText) findViewById(R.id.popUpDate);
        datePicker.setText(sdf.format(calendar.getTime()));

        datePicker.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                datePickerDialog = new DatePickerDialog(MainActivity.this, null, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH));
                datePickerDialog.getDatePicker().init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), new DatePicker.OnDateChangedListener() {
                    @Override
                    public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                        calendar.set(Calendar.YEAR, year);
                        calendar.set(Calendar.MONTH, monthOfYear);
                        calendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
                        datePicker.setText(sdf.format(calendar.getTime()));
                        datePickerDialog.dismiss();
                    }
                });
                datePickerDialog.show();
            }
        });
    }
}

就像一种魅力！

Answer 2

DatePickerDialog包含一个DatePicker。DatePicker有OnDateChangedListener。

当您选择以下日期时，可以使用OnDateChangedListener侦听器

final Calendar calendar = Calendar.getInstance();
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH);
int day = calendar.get(Calendar.DAY_OF_MONTH);

final DatePickerDialog datePickerDialog =
    new DatePickerDialog(YourActivity.this, null, year, month, day);

datePickerDialog.getDatePicker()
    .init(year, month, day, new DatePicker.OnDateChangedListener() {
        @Override
        public void onDateChanged(DatePicker view, int year, int monthOfYear,
            int dayOfMonth) {
            Toast.makeText(YourActivity.this, "day" + dayOfMonth + "-month" + monthOfYear + 1 + "-year" + year, Toast.LENGTH_SHORT).show();
            // dismiss the popup when choose a date 
            datePickerDialog.dismiss();
        }
    });
datePickerDialog.show();

这个解决方案将适用于您的情况，但我认为它对用户体验(UX)不是很好，因为几乎Android应用程序都使用默认的DatePickerDialog流。

Answer 3

现在的行为还好吗？ 如果它会自动关闭.！那么系统如何知道您选择了所需的日期和时间，或者您意外地选择了它……没有自动关闭它的感觉，而不是事件触发。

但是你可以在onDateSet上关闭它。

更新：您可以这样关闭它。

// open datepicker dialog.
// set date picker for current date
// add pickerListener listner to date picker

   DatePickerDialog dialog = new DatePickerDialog(this, pickerListener, year, month,day);
   dialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Text", new DialogInterface
            .OnClickListener() {
          public void onClick(DialogInterface dialog, int which) {
            if (which == DialogInterface.BUTTON_NEGATIVE) {
              // Do Stuff
             Log.i("dialog click", "dialog negative button clicked");
            dialog.dismiss();
            }
          }
        });
   dialog.dismiss();