如何使用材料设计选择时间？

Question

如何使用材料选择时间：1.3.0-alpha01，我正在寻找以下屏幕截图的时间选择器，这是我在材料io中找到的。

我试过日期选择器正在工作

物料日期选择器

//Creating a MaterialDatePicker.Builder instance that gives us a single date selector.
val builder : MaterialDatePicker.Builder<*> = MaterialDatePicker.Builder.datePicker() // 1
//Building-up the MaterialDatePicker by calling a builder.build function
val picker : MaterialDatePicker<*> = builder.build()  // 2
//Display the Material Date Picker.
picker.show(requireActivity().supportFragmentManager, picker.toString())   // 3

简单的时间选择器

  val cal = Calendar.getInstance()
            val timeSetListener = TimePickerDialog.OnTimeSetListener { _, hour, minute ->
                cal.set(Calendar.HOUR_OF_DAY, hour)
                cal.set(Calendar.MINUTE, minute)
                //textView.text = SimpleDateFormat("HH:mm").format(cal.time)
            }
            val time = TimePickerDialog(context, timeSetListener, cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE), true)
            time.setTitle("")
            time.show()

Answer 1

您可以使用MaterialTimePicker材料组件库中引入的新功能。

注意：此代码至少需要版本1.3.0-alpha03.

import com.google.android.material.timepicker.MaterialTimePicker

val materialTimePicker = MaterialTimePicker.Builder()
    .setTimeFormat(TimeFormat.CLOCK_24H)
    .build()

materialTimePicker.addOnPositiveButtonClickListener {
    val newHour: Int = materialTimePicker.hour
    val newMinute: Int = materialTimePicker.minute
}

使用相同的代码：

val materialTimePicker = MaterialTimePicker.Builder()
    .setTimeFormat(TimeFormat.CLOCK_12H)
    .build()

materialTimePicker.show(supportFragmentManager, "fragment_tag")

Answer 2

要使用MATERIAL TIME PICKER，请将以下依赖项添加到项目的 build.gradle 文件中：

   implementation 'com.google.android.material:material:1.3.0-alpha02'

Kotlin时间选择器使用材质：1.3.0-alpha02

val timePickerDialog = MaterialTimePicker.newInstance();
            timePickerDialog.show(requireActivity().supportFragmentManager, "fragment_tag");
            // Types of formats for the time pickeer
            timePickerDialog.setTimeFormat(TimeFormat.CLOCK_12H)//CLOCK_24H
            timePickerDialog.setListener { dialog: MaterialTimePicker ->
                val newHour = dialog.hour
                val newMinute = dialog.minute
}