无法解析方法“newInstance”

Question

我收到以下错误：Cannot resolve method 'newInstance(com.example.ghazalitodo.AddReminderActivity, int, int, boolean)这是我的代码：public void setTime(View v) {    if (mCurrentReminderUri == null) {        Toast.makeText(this, "click again on the reminder list to set time alarm", Toast.LENGTH_LONG).show();        return;    }    Calendar now = Calendar.getInstance();    TimePickerDialog tpd = TimePickerDialog.newInstance(this, now.get(Calendar.HOUR_OF_DAY),            now.get(Calendar.MINUTE), false);    tpd.setThemeDark(false);    tpd.show(getFragmentManager(), "Timepickerdialog");}// On clicking Date pickerpublic void setDate(View v) {    if (mCurrentReminderUri == null) {        Toast.makeText(this, "click again on the reminder list to set date alarm", Toast.LENGTH_LONG).show();        return;    }    Calendar now = Calendar.getInstance();    DatePickerDialog dpd = DatePickerDialog.new Instance(this, now.get(Calendar.YEAR),            now.get(Calendar.MONTH),            now.get(Calendar.DAY_OF_MONTH)    );    dpd.show(getFragmentManager(), "Datepickerdialog");}

Answer 1

如果我错了，请原谅我。我不熟悉那些观点。但是，我认为你应该使用：

TimePickerDialog tpd = new TimePickerDialog(this, null, 

        now.get(Calendar.HOUR_OF_DAY), now.get(Calendar.MINUTE), false);

和

DatePickerDialog dpd = new DatePickerDialog (this, null, now.get(Calendar.YEAR),

        now.get(Calendar.MONTH), now.get(Calendar.DAY_OF_MONTH);

如果这有帮助，请告诉我。否则，我会删除我的答案

编辑

我猜你是从某个库（扩展了 a ）复制了代码DialogFragment。这就是为什么你有一些冲突。

为了使您的代码使用这些的默认实现工作Dialog，您可以使用：

public void setTime(View v) {

    if (mCurrentReminderUri == null) {

        Toast.makeText(this, "click again on the reminder list to set time alarm", Toast.LENGTH_LONG).show();

        return;

    }

    Calendar now = Calendar.getInstance();

    TimePickerDialog tpd = new TimePickerDialog(this, null,

            now.get(Calendar.HOUR_OF_DAY), now.get(Calendar.MINUTE), false);

    tpd.show();

}

// On clicking Date picker

public void setDate(View v) {

    if (mCurrentReminderUri == null) {

        Toast.makeText(this, "click again on the reminder list to set date alarm", Toast.LENGTH_LONG).show();

        return;

    }

    Calendar now = Calendar.getInstance();

    DatePickerDialog dpd = new DatePickerDialog (this, null, now.get(Calendar.YEAR),

            now.get(Calendar.MONTH), now.get(Calendar.DAY_OF_MONTH));

    dpd.show();

}