DatePickerDialog 无法在 MaterialLibrary 上实现 OnDateSetListener

Question

我正在尝试使用来自rey5137's material library 的 DatePickerDialog，但它无法实现方法 OnDateSetListener。这是我的代码

dateFMCdialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                Calendar newDate = Calendar.getInstance();
                newDate.set(year, monthOfYear, dayOfMonth);
                dateFMC.setText(dateFormatter.format(newDate.getTime()));
            }
        },newCalendar.get(Calendar.YEAR), newCalendar.get(Calendar.MONTH), newCalendar.get(Calendar.DAY_OF_MONTH));

当我实现 OnDateSetListener 方法时，这段代码给了我错误。看起来此对话框不支持 OnDateSetListener。我应该怎么做才能从这个对话框中获得价值？谢谢。

Answer 1

从https://github.com/rey5137/material/blob/master/lib/src/main/java/com/rey/material/widget/DatePicker.java#L430看来，这个函数被称为setOnDateChangedListener，你需要实现OnDateChangedListener：

/**
 * Set the listener will be called when the selected date is changed.
 * @param listener The {@link DatePicker.OnDateChangedListener} will be called.
 */
public void setOnDateChangedListener(OnDateChangedListener listener){
    mOnDateChangedListener = listener;
}

而来自https://github.com/rey5137/material/blob/master/lib/src/main/java/com/rey/material/widget/DatePicker.java#L72的接口是要实现的：

/**
 * Interface definition for a callback to be invoked when the selected date is changed.
 */
public interface OnDateChangedListener {

    /**
     * Called when the selected date is changed.
     * @param oldDay The day value of old date.
     * @param oldMonth The month value of old date.
     * @param oldYear The year value of old date.
     * @param newDay The day value of new date.
     * @param newMonth The month value of new date.
     * @param newYear The year value of new date.
     */
    public void onDateChanged(int oldDay, int oldMonth, int oldYear, int newDay, int newMonth, int newYear);
}