单击取消按钮上的日期选择器对话框时如何完成活动

Steve Kamau 发表于 Dev

史蒂夫·卡莫（Steve Kamau）

我已经在活动中实现了日期选择器对话框，并且工作正常。当我单击“取消”时，会关闭“进餐选择器”，因此按钮会起作用。但是，我想捕获取消按钮事件并向其添加更多代码以完成活动，但我似乎无法处理该事件。这是我的代码：

public class DatePickerActivity extends Activity {
    static final int DATE_PICKER_ID = 1111;
    private int year;
    private int month;
    private int day;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_date_picker);
        // Get current date by calender

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

        showDialog(DATE_PICKER_ID);
    }
    @Override
    protected Dialog onCreateDialog(int id) {
        switch (id) {
            case DATE_PICKER_ID:

                // open datepicker dialog.
                // set date picker for current date
                // add pickerListener listner to date picker
                return new DatePickerDialog(this, pickerListener, year, month,day);
        }
        return null;
    }

    private DatePickerDialog.OnDateSetListener pickerListener = new DatePickerDialog.OnDateSetListener() {

        // when dialog box is closed, below method will be called.
        @Override
        public void onDateSet(DatePicker view, int selectedYear,
                              int selectedMonth, int selectedDay) {

            year  = selectedYear;
            month = selectedMonth;
            day   = selectedDay;

            // Show selected date
            Log.d("Date selected", String.valueOf(new StringBuilder().append(month + 1)
                    .append("-").append(day).append("-").append(year)
                    .append(" ")));

            Intent intent = new Intent();
            intent.putExtra("year", String.valueOf(new StringBuilder().append(year )));
            intent.putExtra("month", String.valueOf(new StringBuilder().append(month + 1)));
            intent.putExtra("day",  String.valueOf(new StringBuilder().append(day)));
            setResult(RESULT_OK, intent);
            finish();

        }
    };
}

我尝试过的是添加如下onclick方法：

 public void onClick(DialogInterface dialog, int which) {
        // TODO Auto-generated method stub

        if(which==Dialog.BUTTON_NEGATIVE)
        {
            Log.i("dialog click", "dialog negative button clicked");
            dialog.dismiss();
        }

    }

但这是行不通的。有什么建议？

黑暗的乘客

您可以尝试此代码

 @Override
  protected Dialog onCreateDialog(int id) {
    switch (id) {
      case DATE_PICKER_ID:

        // 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();
            }
          }
        });
        return dialog;
    }
    return null;
  }