android - 如何在android中设置DatePickerDialog的标题布局

Question

我正在 android 中创建 DatePickerDialog，我希望我的 datepickerdialog 看起来像图像中左侧的对话框。但是当我自己编写代码时，它只是水平显示文本日期(右边的对话框)我应该怎么办？ My image

package com.example.luc.myapplication;
import android.app.DatePickerDialog;
import android.app.DialogFragment;

import android.os.Bundle;
import android.app.Fragment; 
import android.view.ViewGroup; 
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.DatePicker;
import android.app.Dialog; 
import java.util.Calendar;

/**
 * A simple {@link Fragment} subclass.
 */
public class DatePickerFragment extends DialogFragment implements 
DatePickerDialog.OnDateSetListener {

@Override
public Dialog onCreateDialog(Bundle savedInstanceState){
    //Use the current date as the default date in the date picker
    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 dialog =  new DatePickerDialog(getActivity(), this, year, month, day);
    return dialog;
}

public void onDateSet(DatePicker view, int year, int month, int day) {
    //Do something with the date chosen by the user
  LinearLayout layout = new LinearLayout(getActivity());
    layout.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
    layout.setOrientation(LinearLayout.VERTICAL);

    view.setLayoutParams(layout.getLayoutParams());
    TextView tv = (TextView) getActivity().findViewById(R.id.tv);
    tv.setText("Date changed...");
    tv.setText(tv.getText() + "\nYear: " + year);
    tv.setText(tv.getText() + "\nMonth: " + month);
    tv.setText(tv.getText() + "\nDay of Month: " + day);

    String stringOfDate = day + "/" + month + "/" + year;
    tv.setText(tv.getText() + "\n\nFormatted date: " + stringOfDate);
}
}

我在 MainActivity 中点击一个按钮时调用对话框

Answer 1

我会先把你的布局改成这样，它会给你更多的控制权

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#008d7f"
    android:paddingBottom="2dp"
    android:paddingTop="5dp"
    android:text="Friday"
    android:textColor="#ffffff"
    android:gravity="center_horizontal"/>

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:background="#009688"
    >

<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:paddingBottom="5dp"
    android:paddingTop="5dp"
    android:id="@+id/week_day"
    android:textColor="#ffffff"
    android:textSize="30sp"
    android:text="MAY"
    android:gravity="center_horizontal"/>

<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:id="@+id/day_of_month"
    android:textSize="60sp"
    android:paddingBottom="5dp"
    android:paddingTop="5dp"
    android:textColor="#ffffff"
    android:text="8"
    android:gravity="center_horizontal"
    android:layout_below="@+id/week_day"/>

<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:id="@+id/year"
    android:paddingBottom="5dp"
    android:paddingTop="5dp"
    android:textSize="20sp"
    android:textColor="#ffffff"
    android:text="2017"
    android:gravity="center_horizontal"
    android:layout_below="@+id/day_of_month"/>

</RelativeLayout>

然后将 java 更改为:

package com.example.luc.myapplication;
import android.app.DatePickerDialog;
import android.app.DialogFragment;
import android.os.Bundle;
import android.app.Fragment; 
import android.view.ViewGroup; 
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.DatePicker;
import android.app.Dialog; 
import java.util.Calendar;

 /**
 * A simple {@link Fragment} subclass.
 */
public class DatePickerFragment extends DialogFragment implements 
DatePickerDialog.OnDateSetListener {

@Override
 public Dialog onCreateDialog(Bundle savedInstanceState){
    //Use the current date as the default date in the date picker
    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 dialog =  new DatePickerDialog(getActivity(), this, year, month, day);
    return dialog;
}

public void onDateSet(DatePicker view, int year, int month, int day) {
  //Do something with the date chosen by the user
  LinearLayout layout = new LinearLayout(getActivity());
    layout.setLayoutParams(new 
    ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 
    ViewGroup.LayoutParams.WRAP_CONTENT));
    layout.setOrientation(LinearLayout.VERTICAL);

    view.setLayoutParams(layout.getLayoutParams());
    TextView tv_dayofweek = (TextView) getActivity().findViewById(R.id.day_of_week);
    TextView tv_month = (TextView) getActivity().findViewById(R.id.month);
    TextView tv_dayofmonth = (TextView) getActivity().findViewById(R.id.day_of_month);
    TextView tv_year = (TextView) getActivity().findViewById(R.id.day_of_week);
    tv.setText("Date changed...");
    tv_year.setText(tv.getText() + "\nYear: " + year);
    tv_month.setText(tv.getText() + "\nMonth: " + month);
    tv_dayofmonth.setText(tv.getText() + "\nDay of Month: " + day);

    String stringOfDate = day + "/" + month + "/" + year;
    tv.setText(tv.getText() + "\n\nFormatted date: " + stringOfDate);
    }
}

刚刚测试，这是结果: