Timepicker android studio kotlin

TimePicker в Котлине

Android TimePicker — это элемент управления пользовательского интерфейса для выбора времени в 24-часовом формате или в режиме AM / PM. Он используется для того, чтобы пользователи выбирали правильное время дня в нашем приложении.

В Android TimePicker доступен в двух режимах: первый — режим часов, другой — режим счетчика.

Мы можем использовать TimePicker вручную в XML-макете или программно в файле Kotlin. В этой статье мы должны использовать виджет TimePicker в XML Layout.

Сначала мы создаем новый проект , выполнив следующие шаги:

1. Нажмите Файл, затем Новый =>Новый проект .
2. После этого включите поддержку Kotlin и нажмите «Далее».
3. Выберите минимальный SDK для удобства и нажмите кнопку « Далее» .
4. Затем выберите Пустое занятие =>Далее =>Готово .

Android TimePicker с режимом часов

Мы можем использовать android: timePickerMode, чтобы показывать только часы. В приведенном ниже примере мы используем TimePicker в режиме часов.

Приведенный выше код TimePicker можно увидеть в приложении для Android, как это

Android TimePicker с режимом Spinner

Мы также можем использовать TimePicker в формате счетчика, используя атрибут android: timePickerMode .

Приведенный выше код TimePicker можно увидеть в приложении для Android, как это

Различные атрибуты элемента управления TimePicker —

XML Attributes	Description
android:id	Used to uniquely identify the control.
android:timePickerMode	Used to specify the mode of TimePickerpicker(spinner or clock)
android:background	Used to set background color of the Text View.
android:padding	Used to set the padding from left, right, top and bottom.
android:visibility	Used to specify the visibility of the view.

Чтобы использовать Clock TimePicker в activity_main.xml

В этом файле мы добавим виджет TimePicker и TextView и установим их атрибуты, чтобы к ним можно было получить доступ в файле kotlin.

Источник

Tutorialwing

In this article, we will learn about android TimePicker using Kotlin. We will go through various example that demonstrates how to use different attributes of TimePicker. For example,

In this article, we will get answer to questions like –

• What is TimePicker?
• Why should we consider TimePicker while designing ui for any app?
• What are possibilities using TimePicker while designing ui? etc.

Let’s have a quick demo of things we want to cover in this tutorial –

Output

Tutorialwing Kotlin TimePicker Output

Tutorialwing Kotlin TimePicker Output

Getting Started

We can define android TimePicker widget as below –

TimePicker is widget to select time in either 24-hour format or AM/PM format.

Now, how do we use TimePicker in android application ?

Creating New Project

At first, we will create an application.
So, follow steps below to create any android project in Kotlin –

Step	Description
1.	Open Android Studio (Ignore if already done).
2.	Go to File => New => New Project. This will open a new window. Then, under Phone and Tablet section, select Empty Activity. Then, click Next.
3.	In next screen, select project name as TimePicker. Then, fill other required details.
4.	Then, clicking on Finish button creates new project.

Some very important concepts (Recommended to learn before you move ahead)

Before we move ahead, we need to setup for viewBinding to access Android TimePicker Using Kotlin file without using findViewById() method.

Setup ViewBinding

Add viewBinding true in app/build.gradle file.

Now, set content in activity using view binding.
Open MainActivity.kt file and write below code in it.

Now, we can access view in Kotlin file without using findViewById() method.

Using TimePicker in Kotlin

Follow steps below to use TimePicker in newly created project –

• Open res/values/strings.xml file. Then, add below code into it.
• Open res/layout/activity_main.xml file. Then, add below code in it –
• We can also access it in Kotlin File, MainActivity.kt, as below –

Now, run the application. We will get output as below –

Tutorialwing Kotlin TimePicker Output

Tutorialwing Kotlin TimePicker Output

Different Attributes of TimePicker in XML

Now, we will see how to use different attributes of Android TimePicker using Kotlin to customise it –

Set Id of TimePicker

Many a time, we need id of View to access it in kotlin file or create ui relative to that view in xml file. So, we can set id of TimePicker using android:id attribute like below –

Here, we have set id of TimePicker as timePicker_ID using android:id=”” attribute. So, if we need to reference this TimePicker, we need to use this id – timePicker_ID.
Learn to Set ID of TimePicker Dynamically

Set Width of TimePicker

We use android:layout_width=”” attribute to set width of TimePicker.
We can do it as below –

Width can be either “MATCH_PARENT” or “WRAP_CONTENT” or any fixed value (like 20dp, 30dp etc.).
Learn to Set Width of TimePicker Dynamically

Set Height of TimePicker

We use android:layout_height=”” attribute to set height of TimePicker.
We can do it as below –

Height can be either “MATCH_PARENT” or “WRAP_CONTENT” or any fixed value.
Learn to Set Height of TimePicker Dynamically

Set Padding of TimePicker

We use android:padding=”” attribute to set padding of TimePicker.
We can do it as below –

Here, we have set padding of 10dp in TimePicker using android:padding=”” attribute.
Learn to Set Padding of TimePicker Dynamically

Set Margin of TimePicker

We use android:layout_margin=”” attribute to set margin of TimePicker.
We can do it as below –

Here, we have set margin of 10dp in TimePicker using android:layout_margin=”” attribute.
Learn to Set Margin of TimePicker Dynamically

Set Background of TimePicker

We use android:background=”” attribute to set background of TimePicker.
We can do it as below –

Here, we have set background of color #ff0000 in TimePicker using android:background=”” attribute.
Learn to Set Background of TimePicker Dynamically

Set Visibility of TimePicker

We use android:visibility=”” attribute to set visibility of TimePicker.
We can do it as below –

Here, we have set visibility of TimePicker using android:visiblity=”” attribute. Visibility can be of three types – gone, visible and invisible
Learn to Set Visibility of TimePicker Dynamically

Till now, we have see how to use android TimePicker using Kotlin. We have also gone through different attributes of TimePicker to perform certain task. Let’s have a look at list of such attributes and it’s related task.

Different Attributes of Android TimePicker Widget

Below are the various attributes that are used to customise android TimePicker Widget. However, you can check the complete list of attributes of TimePicker in it’s official documentation site. Here, we are going to list some of the important attributes of this widget –

Attributes of android TimePicker widget are –

Sr.	XML Attributes	Description
1	android:timePickerMode	Defines look of the TimePicker widget

Some of the popular attributes of TimePicker inherited from FrameLayout are –

Sr.	XML Attributes	Description
1	android:foregroundGravity	Sets the gravity of the foreground drawable
2	android:measureAllChildren	When measuring, It specifies whether to measure all children or only those that are in visible or invisible state

Some of the popular attributes of TimePicker inherited from ViewGroup are –

Sr.	XML Attributes	Description
1	android:animationCache	Specifies whether layout animations should create a drawing cache for their children.
2	android:layoutAnimation	Specifies the layout animation to use the first time the ViewGroup is laid out
3	android:layoutMode	Specifies the layout mode

Some of the popular attributes of TimePicker inherited from View are –

Sr.	XML Attributes	Description
1	android:background	Specifies background of the view
2	android:clickable	Specifies whether view is clickable or not
3	android:fadeScrollbars	Specifies whether scrollbar should fade out when not in use or not
4	android:fitsSystemWindows	Specifies whether to adjust view layout according to system windows
5	android:id	Specifies id of the view
6	android:minHeight	Specifies minimum height
7	android:minWidth	Specifies minimum width
8	android:padding	Specifies padding of the view
9	android:paddingBottom	Specifies padding to bottom of the view
10	android:paddingEnd	Specifies padding to end of the view
11	android:visibility	Specifies visibility of the view

We have seen different attributes of TimePicker and how to use it. If you wish to visit post to learn more about it

Thus, we have seen what is TimePicker, how can we use android TimePicker using Kotlin ? etc. We also went through different attributes of android TimePicker.

Источник

Tutorialwing

In this article, we will learn about android DatePicker using Kotlin. We will go through various example that demonstrates how to use different attributes of DatePicker. For example,

In this article, we will get answer to questions like –

• What is DatePicker?
• Why should we consider DatePicker while designing ui for any app?
• What are possibilities using DatePicker while designing ui? etc.

Let’s have a quick demo of things we want to cover in this tutorial –

Output

Tutorialwing Kotlin DatePicker Output

Tutorialwing Kotlin DatePicker Output

Getting Started

We can define android DatePicker widget as below –

DatePicker is a widget that display view to select any date.

Now, how do we use DatePicker in android application ?

Creating New Project

At first, we will create an application.
So, follow steps below to create any android project in Kotlin –

Step	Description
1.	Open Android Studio (Ignore if already done).
2.	Go to File => New => New Project. This will open a new window. Then, under Phone and Tablet section, select Empty Activity. Then, click Next.
3.	In next screen, select project name as DatePicker. Then, fill other required details.
4.	Then, clicking on Finish button creates new project.

Some very important concepts (Recommended to learn before you move ahead)

Before we move ahead, we need to setup for viewBinding to access Android DatePicker Using Kotlin file without using findViewById() method.

Setup ViewBinding

Add viewBinding true in app/build.gradle file.

Now, set content in activity using view binding.
Open MainActivity.kt file and write below code in it.

Now, we can access view in Kotlin file without using findViewById() method.

Using DatePicker in Kotlin

Follow steps below to use DatePicker in newly created project –

• Open res/values/strings.xml file. Then, add below code into it.
• Open res/layout/activity_main.xml file. Then, add below code in it –

In activity_main.xml file, we have defined textView and datePicker widgets. Now, we will access these widgets in kotlin file to perform some operations on it.
We can also access it in Kotlin File, MainActivity.kt, as below –

We have accessed textView and datePicker using kotlin file (i.e. MainActivity.kt file) in the application. Then, we have set a listener to show selected date in the textView.

Now, run the application. We will get output as below –

Tutorialwing Kotlin DatePicker Output

Tutorialwing Kotlin DatePicker Output

Different Attributes of DatePicker in XML

Now, we will see how to use different attributes of Android DatePicker using Kotlin to customise it –

Set Id of DatePicker

Many a time, we need id of View to access it in kotlin file or create ui relative to that view in xml file. So, we can set id of DatePicker using android:id attribute like below –

Here, we have set id of DatePicker as datePicker_ID using android:id=”” attribute. So, if we need to reference this DatePicker, we need to use this id – datePicker_ID.
Learn to Set ID of DatePicker Dynamically

Set Width of DatePicker

We use android:layout_width=”” attribute to set width of DatePicker.
We can do it as below –

Width can be either “MATCH_PARENT” or “WRAP_CONTENT” or any fixed value (like 20dp, 30dp etc.).
Learn to Set Width of DatePicker Dynamically

Set Height of DatePicker

We use android:layout_height=”” attribute to set height of DatePicker.
We can do it as below –

Height can be either “MATCH_PARENT” or “WRAP_CONTENT” or any fixed value.
Learn to Set Height of DatePicker Dynamically

Set Padding of DatePicker

We use android:padding=”” attribute to set padding of DatePicker.
We can do it as below –

Here, we have set padding of 10dp in DatePicker using android:padding=”” attribute.
Learn to Set Padding of DatePicker Dynamically

Set Margin of DatePicker

We use android:layout_margin=”” attribute to set margin of DatePicker.
We can do it as below –

Here, we have set margin of 10dp in DatePicker using android:layout_margin=”” attribute.
Learn to Set Margin of DatePicker Dynamically

Set Background of DatePicker

We use android:background=”” attribute to set background of DatePicker.
We can do it as below –

Here, we have set background of color #ff0000 in DatePicker using android:background=”” attribute.
Learn to Set Background of DatePicker Dynamically

Set Visibility of DatePicker

We use android:visibility=”” attribute to set visibility of DatePicker.
We can do it as below –

Here, we have set visibility of DatePicker using android:visiblity=”” attribute. Visibility can be of three types – gone, visible and invisible
Learn to Set Visibility of DatePicker Dynamically

Till now, we have see how to use android DatePicker using Kotlin. We have also gone through different attributes of DatePicker to perform certain task. Let’s have a look at list of such attributes and it’s related task.

Different Attributes of Android DatePicker Widget

Below are the various attributes that are used to customise android DatePicker Widget. However, you can check the complete list of attributes of DatePicker in it’s official documentation site. Here, we are going to list some of the important attributes of this widget –

Some of the popular attributes of android datePicker widget are –

Sr.	XML Attributes	Description
1	android:calendarTextColor	Specifies text color of the calendar
2	android:calendarViewShown	Checks whether calendar view is shown or not
3	android:datePickerMode	Specifies the look of the widget
4	android:dayOfWeekBackground	Specifies the background color for the header’s day of week
5	android:endYear	Specifies the last year (inclusive) of the calendar
6	android:firstDayOfWeek	Specifies the first day of the week according to Calendar
7	android:headerBackground	Specifies background for the selected date header
8	android:maxDate	Specifies the maximal date shown by the calendar in mm/dd/yyyy format
9	android:minDate	Specifies the minimal date shown by the calendar in mm/dd/yyyy format
10	android:spinnersShown	Specifies whether spinners are shown or not
11	android:startYear	Specifies the first year (inclusive) of the calendar

Some of the popular attributes of DatePicker inherited from FrameLayout are –

Sr.	XML Attributes	Description
1	android:foregroundGravity	Specifies the gravity of the foreground drawable
2	android:measureAllChildren	When measuring, It specifies whether to measure all children or only those that are in visible or invisible state

Some of the popular attributes of android datePicker inherited from ViewGroup are –

Sr.	XML Attributes	Description
1	android:animationCache	Specifies whether layout animations should create a drawing cache for their children
2	android:layoutAnimation	Specifies the layout animation to use the first time the ViewGroup is laid out
3	android:layoutMode	Specifies the layout mode

Some of the popular attributes of datePicker inherited from View are –

Sr.	XML Attributes	Description
1	android:fadeScrollbars	Specifies whether scrollbar should fade out when not in use or not
2	android:fitsSystemWindows	Specifies whether to adjust view layout according to system windows
3	android:id	Specifies id of the view
4	android:minHeight	Specifies minimum height
5	android:minWidth	Specifies minimum width
6	android:padding	Specifies padding of the view
7	android:visibility	Specifies visibility of the view

We have seen different attributes of DatePicker and how to use it. If you wish to visit post to learn more about it

Thus, we have seen what is DatePicker, how can we use android DatePicker using Kotlin ? etc. We also went through different attributes of android DatePicker.

Источник