如何在 Kotlin(Android) 的日期选择器对话框中只显示日期和月份？

Question

我有一个日期选择器对话框。我只想显示日期和月份。年份选择器对话框必须隐藏。我已经尝试过 this 等其他答案。什么都不适合我。它还应该支持 Kitkat 到 Nougat 设备。我的日期选择器代码如下。

     fun setDatePickerDialog() {
        mDobDialog = DatePickerDialog(this@SignUpActivity, R.style.VDDatePickerDialogTheme, DatePickerDialog.OnDateSetListener { view, year, monthOfYear, dayOfMonth ->
            val newDate = Calendar.getInstance()
            newDate.set(year, monthOfYear, dayOfMonth)
            //dob_textview.setText("($dayOfMonth)  ($monthOfYear)  ($year)")
            val dateFormat = SimpleDateFormat(VDAppConstants.DOB_DISPLAY_FORMAT)
            dob_textview?.setText(dateFormat.format(newDate.time))

        }, mNewCalendar.get(Calendar.YEAR), mNewCalendar.get(Calendar.MONTH), mNewCalendar.get(Calendar.DAY_OF_MONTH))

        mNewCalendar.set(1978,
                mNewCalendar.get(Calendar.MONTH),
                mNewCalendar.get(Calendar.DAY_OF_MONTH))
        mDobDialog?.datePicker?.maxDate = mNewCalendar.timeInMillis
    }

以下代码仅适用于 Kitkat 设备，不适用于 Nougat 设备。

 val mDobDialog = DatePickerDialog(this@MainActivity, android.R.style.Theme_Holo_Dialog, DatePickerDialog.OnDateSetListener { view, year, monthOfYear, dayOfMonth ->
        // Display Selected date in textbox
        //date.setText("" + dayOfMonth + " " + monthOfYear + ", " + year)
    }, year, month, day)
    mDobDialog.show()


    // Hide Year Selector in Date Picker
    mDobDialog.findViewById(Resources.getSystem().getIdentifier("year", "id", "android")).visibility = View.GONE

Answer 1

我用不同的代码进行了测试，这段代码工作正常。如果您将日期选择器主题用作 Theme_Holo_Dialog 那么它工作正常。工作代码如下。

注意：如果你设置了主题是无效的Theme_Material_Dialog

package com.wave18.datepickedialogdemo

import android.annotation.SuppressLint
import android.app.DatePickerDialog
import android.content.res.Resources
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.view.View
import kotlinx.android.synthetic.main.activity_main.*
import java.util.*

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // Date Picker Dialog
        val dialog = datePickerDialog()

        // Button for Showing Date Picker Dialog
        button_show_date_picker.setOnClickListener {

            // Show Date Picker
            dialog.show()

            // Hide Year Selector
            val year = dialog.findViewById<View>(Resources.getSystem().getIdentifier("android:id/year", null, null))
            if (year != null) {
                year.visibility = View.GONE
            }


        }


    }

    // Function for Showing Date Picker
    @SuppressLint("SetTextI18n")
    fun datePickerDialog(): DatePickerDialog {
        val c = Calendar.getInstance()
        val year = c.get(Calendar.YEAR)
        val month = c.get(Calendar.MONTH)
        val day = c.get(Calendar.DAY_OF_MONTH)

        // Date Picker Dialog
        val datePickerDialog = DatePickerDialog(this@MainActivity, android.R.style.Theme_Holo_Dialog, DatePickerDialog.OnDateSetListener { view, year, monthOfYear, dayOfMonth ->
            // Display Selected date in textbox
            date.text = "$dayOfMonth $monthOfYear, $year"
        }, year, month, day)
        // Show Date Picker

        return datePickerDialog


    }

}

如何在 Kotlin(Android) 的日期选择器对话框中只显示日期和月份？

How to show only day and month in date picker dialog in Kotlin(Android)?

android

android-datepicker

kotlin