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java - 无法解析方法“newInstance”

问题描述

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 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 = DatePickerDialog.new Instance(this, now.get(Calendar.YEAR),
            now.get(Calendar.MONTH),
            now.get(Calendar.DAY_OF_MONTH)
    );
    dpd.show(getFragmentManager(), "Datepickerdialog");
}

标签： javaandroid

解决方案

如果我错了，请原谅我。我不熟悉这些观点。但是，我认为您应该使用：

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);

让我知道这是否有帮助。否则，我将删除我的答案

编辑

DialogFragment我猜您从某个库（扩展了 a ）中复制了代码。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();
}

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