Android Things - DatePickerDialog and TimePickerDialog (stackoverflow.com/questions/45776749)

activity_main.xml

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

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"/>

    <Button
        android:id="@+id/show_datepicker_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="DatePickerDialog" />

    <Button
        android:id="@+id/show_timepicker_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TimePickerDialog" />

</LinearLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.techeasy.androidsamples">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.IOT_LAUNCHER"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <uses-library android:name="com.google.android.things"/>
    </application>

</manifest>

build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.1"
    defaultConfig {
        applicationId "com.techeasy.androidsamples"
        minSdkVersion 24
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    provided 'com.google.android.things:androidthings:0.5-devpreview'
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    testCompile 'junit:junit:4.12'
}

MainActivity.java

package com.techeasy.androidsamples;

import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.TimePickerDialog;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TimePicker;

import java.util.Calendar;

public class MainActivity extends Activity implements View.OnClickListener {

    private static final String TAG = "MainActivity";
    private Button showDatePickerButton;
    private Button showTimePickerButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        showDatePickerButton = findViewById(R.id.show_datepicker_btn);
        showDatePickerButton.setOnClickListener(this);

        showTimePickerButton = findViewById(R.id.show_timepicker_btn);
        showTimePickerButton.setOnClickListener(this);
    }

    @Override
    public void onClick(View view) {
        if(view == showDatePickerButton) {
            editDate();
        }else if(view == showTimePickerButton){
            editTime();
        }
    }

    private void editDate() {
        DatePickerDialog.OnDateSetListener onDateSetListener = new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                Log.d(TAG, "onDateSetListener.onDateSet");
            }
        };

        Calendar cal = Calendar.getInstance();
        int year = cal.get(Calendar.YEAR);
        int month = cal.get(Calendar.MONTH);
        int dayOfMonth = cal.get(Calendar.DAY_OF_MONTH);
        DatePickerDialog mDatePicker = new DatePickerDialog(this, onDateSetListener, year, month, dayOfMonth);
        mDatePicker.show();
    }

    private void editTime() {
        TimePickerDialog.OnTimeSetListener onTimeSetListener = new TimePickerDialog.OnTimeSetListener() {
            @Override
            public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
                Log.d(TAG, "onTimeSetListener.onTimeSet");
            }
        };

        Calendar cal = Calendar.getInstance();
        int hours = cal.get(Calendar.HOUR_OF_DAY);
        int minutes = cal.get(Calendar.MINUTE);
        TimePickerDialog mTimePicker = new TimePickerDialog(this, onTimeSetListener, hours, minutes, true);
        mTimePicker.show();
    }
}