Question

我正在使用以下内容日期选择器的示例

http://developer.android.com/guide/tutorials/views/hello-datepicker.html

现在我想在点击日期选择器取消按钮时执行一些功能，但是在datepickerdialog中没有看到取消事件

任何人都可以指导我如何实现这一目标。

任何帮助将不胜感激。

Answer 1

我是这样做的：

  DatePickerDialog dialog = new DatePickerDialog(this,
              mDateSetListener,
              year, month, day);

  dialog.setButton(DialogInterface.BUTTON_NEGATIVE, getString(R.string.cancel), new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog, int which) {
       if (which == DialogInterface.BUTTON_NEGATIVE) {
          // Do Stuff
       }
    }
  });

Answer 2

如果要根据用户是否选择日期执行不同的操作，可以使用onDismiss处理程序。请务必设置布尔值（例如“isDataSet”）以指示用户是否选择了日期。这是一个例子：

// Date Picker Dialog
   public void showDatePickerDialog(View view) {
   int year, month, day;
   isDataSet = false;  // this is used by the onDismiss handler

// Set initial time period in DatePicker to current month
   calendarCurrent = Calendar.getInstance(); 
   month = calendarCurrent.get(Calendar.MONTH);
   day =   calendarCurrent.get(Calendar.DAY_OF_MONTH);
   year =  calendarCurrent.get(Calendar.YEAR);

   DatePickerDialog datePickerDialog = new DatePickerDialog(YourActivity.this, dateSetListener, year, month, day );
   datePickerDialog.setOnDismissListener(mOnDismissListener);
   datePickerDialog.show();
   datePickerDialog_visible=true;  //indicate dialog is up
 } // [END showDatePickerDialog] 

//onDismiss handler
private DialogInterface.OnDismissListener mOnDismissListener =
        new DialogInterface.OnDismissListener() {
            public void onDismiss(DialogInterface dialog) {
                datePickerDialog_visible=false;  //indicate dialog is cancelled/gone
                if (isDataSet) {  // [IF date was picked
                    //do something, date now selected
                } else {
                    //do someething else, dialog cancelled or exited
                }   
            }
        };

Answer 3

DatePickerDialog dialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker datePicker, int i, int i1, int i2) {


            }
        }, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH));

        dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
            @Override
            public void onCancel(DialogInterface dialogInterface) {

            }
        });
        dialog.show();

Answer 4

由于DatePickerDialog是Dialog，因此它支持以下内容：

setOnCancelListener(OnCancelListener listener)
setOnDismissListener(OnDismissListener listener)

使用两个侦听器，您可以识别日期选择器对话框的所有解雇。第一个问题是答案，后者是完成问题。

Answer 5

DatePickerDialog现在公开了一个onCancel侦听器。

DatePickerDialog datePickerDialog = DatePickerDialog.newInstance(new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePickerDialog datePickerDialog, int year, int month, int day) {
            // Do whatever you want when the date is selected.
            editText.setText(String.format("%04d-%02d-%02d", year, month+1, day));
        }
    }, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH));

    datePickerDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
        @Override
        public void onCancel(DialogInterface dialog) {

        }
    });

Answer 6

在这部分代码中：

 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();
                }
            };

您还必须实施onClick()：

public void  onClick  (DialogInterface  dialog, int which) {
   if (which == Button.NEGATIVE) {
      //Cancel
   }
}

Button.NEGATIVE

的API

Answer 7

以下代码帮助我解决了“取消”按钮未关闭“日期”选择器窗口的问题。感谢eSilver的解决方案。

dialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", new DialogInterface.OnClickListener() 
{
    public void onClick(DialogInterface dialog, int which) {
        if (which == DialogInterface.BUTTON_NEGATIVE) {
            datePickerPlugin.success(new PluginResult(PluginResult.Status.OK, ""), callBackId);
            dateDialog.hide();
        }
    }
});

Answer 8

很抱歉弹出古老的问题，但我遇到了类似的问题，并用正确的行为编写了标准DatePickerDialog的简单继承者。看到它in this topic.我希望这会有所帮助。

Answer 9

public void showDatePicker() {

        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);

        DatePickerDialog datePicker = new DatePickerDialog(getActivity(), (view, year1, month1, day1) -> {
            Calendar c1 = Calendar.getInstance();
            c1.set(year1, month1, day1);
            Date date = c1.getTime();
            SimpleDateFormat formatter = new SimpleDateFormat("dd MMMM yyyy");
            String d = formatter.format(date);
//            btnDatePicker.setText(d);
//            selectedDate = d;
        }, year, month, day) {
            @Override
            public void onClick(@NonNull DialogInterface dialog, int which) {
                super.onClick(dialog, which);
                if (which == DialogInterface.BUTTON_POSITIVE) {
                } else if (which == DialogInterface.BUTTON_POSITIVE) {

                }
            }
        };

        datePicker.getDatePicker().setMinDate(System.currentTimeMillis());
        datePicker.show();
    }

Answer 10

我在@PeteH很好的答案中添加了一些其他代码（该代码可对用户按下日期或取消操作做出反应）。

private void showDatePickerDialog() {
    final int[] year = new int[1];
    final int[] month = new int[1];
    final int[] day = new int[1];
    isDataSet = false;  // this is used by the onDismiss handler

    // Set initial time period in DatePicker to current month
    Calendar calendarCurrent = Calendar.getInstance();
    month[0] = calendarCurrent.get(Calendar.MONTH);
    day[0] =   calendarCurrent.get(Calendar.DAY_OF_MONTH);
    year[0] =  calendarCurrent.get(Calendar.YEAR);

    DatePickerDialog datePickerDialog = new DatePickerDialog(
            MyActivity,
            new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePicker datePicker, int y, int m, int d) {
            isDataSet =true;
            //user confirms date
            year[0] =y;
            month[0] = m;
            day[0] =d;

            //do something with date selected

        }
    },
            year[0],
            month[0],
            day[0]
    );
    datePickerDialog.setOnDismissListener(mOnDismissListener);
    datePickerDialog.show();
}
private DialogInterface.OnDismissListener mOnDismissListener =new DialogInterface.OnDismissListener() {
    public void onDismiss(DialogInterface dialog) {
        if (!isDataSet){

            //do something if user cancels

    }
};

Answer 11

简单来说，如果您正在使用或扩展AppCompatDialogFragment() 只需覆盖

override fun onCancel(dialog: DialogInterface) {
    super.onCancel(dialog)
    // write your own code 
}

就是这样:)

Answer 12

试试这个：

if (resultCode == RESULT_CANCELED) {
    Toast toast = Toast.makeText(this,"Datepicker Canceled", 10000);
    toast.show();
    return;
}

如何检测datepicker对话框的取消点击？

12 个答案: