我想在
Kotlin中创建一个
custom dialog
。我在 Stack Overflow 上查看了有关此主题的问题,但找不到任何有用的信息。我该怎么办?
您可以使用以下代码来创建自定义对话框。这是我的工作代码。
private fun showDialog(title: String) {
val dialog = Dialog(activity)
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE)
dialog.setCancelable(false)
dialog.setContentView(R.layout.custom_layout)
val body = dialog.findViewById(R.id.body) as TextView
body.text = title
val yesBtn = dialog.findViewById(R.id.yesBtn) as Button
yesBtn.setOnClickListener {
dialog.dismiss()
}
val noBtn = dialog.findViewById(R.id.noBtn) as Button
noBtn.setOnClickListener {
dialog.dismiss()
}
dialog.show()
}
自定义_dialog.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/fitsdk_white_rectangle"
android:orientation="vertical">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:layout_marginTop="30dp"
android:layout_marginRight="15dp"
android:layout_marginBottom="30dp"
android:orientation="vertical">
<TextView
android:id="@+id/tvTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/error_timeout_title"
android:textColor="@color/black" />
<TextView
android:id="@+id/tvBody"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:text="@string/error_timeout_body"
android:textColor="@color/black" />
<Button
android:id="@+id/btn_yes"
android:layout_width="100dp"
android:layout_height="30dp"
android:background="@android:color/white"
android:clickable="true"
android:text="Yes"
android:textColor="#5DBCD2"
android:textStyle="bold" />
</LinearLayout>
</FrameLayout>
自定义对话框类.kt
class CustomDialogClass(context: Context) : Dialog(context) {
init {
setCancelable(false)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
requestWindowFeature(Window.FEATURE_NO_TITLE)
setContentView(R.layout.custom_dialog)
}
}
下面是我的解决方案,作为一种“消息框”。 我还没有实现“确定”按钮。单击后,消息框应关闭。
这里是布局元素(*/layout/message_box.xml)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="300dp"
android:orientation="vertical">
<TextView
android:id="@+id/message_box_header"
android:layout_width="match_parent"
android:layout_height="30dp"
android:textAlignment="center"
android:textSize="20sp" />
<TextView
android:id="@+id/message_box_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center"
android:textSize="20sp" />
</LinearLayout>
</LinearLayout>
我在 Fragment 类中实现了这个函数。它是用 Kotlin 编写的。
fun showMessageBox(text: String){
//Inflate the dialog as custom view
val messageBoxView = LayoutInflater.from(activity).inflate(R.layout.message_box, null)
//AlertDialogBuilder
val messageBoxBuilder = AlertDialog.Builder(activity).setView(messageBoxView)
//setting text values
messageBoxView.message_box_header.text = "This is message header"
messageBoxView.message_box_content.text = "This is message content"
//show dialog
val messageBoxInstance = messageBoxBuilder.show()
//set Listener
messageBoxView.setOnClickListener(){
//close dialog
messageBoxInstance.dismiss()
}
}
您在 kotlin 中的 context 扩展函数上有干净的代码,并将其用于 你所有的代码
fun Context.showDialog(
title: String,
description: String,
titleOfPositiveButton: String? = null,
titleOfNegativeButton: String? = null,
positiveButtonFunction: (() -> Unit)? = null,
negativeButtonFunction: (() -> Unit)? = null
) {
val dialog = Dialog(this, R.style.Theme_Dialog)
dialog.window?.requestFeature(Window.FEATURE_NO_TITLE) // if you have blue line on top of your dialog, you need use this code
dialog.window?.setBackgroundDrawable(ColorDrawable(Color.TRANSPARENT))
dialog.setCancelable(false)
dialog.setContentView(R.layout.dialog_custom_layout)
val dialogTitle = dialog.findViewById(R.id.title) as TextView
val dialogDescription = dialog.findViewById(R.id.description) as TextView
val dialogPositiveButton = dialog.findViewById(R.id.positiveButton) as TextView
val dialogNegativeButton = dialog.findViewById(R.id.negativeButton) as TextView
dialogTitle.text = title
dialogDescription.text = description
titleOfPositiveButton?.let { dialogPositiveButton.text = it } ?: dialogPositiveButton.makeGone()
titleOfNegativeButton?.let { dialogNegativeButton.text = it } ?: dialogNegativeButton.makeGone()
dialogPositiveButton.setOnClickListener {
positiveButtonFunction?.invoke()
dialog.dismiss()
}
dialogNegativeButton.setOnClickListener {
negativeButtonFunction?.invoke()
dialog.dismiss()
}
dialog.show()
}
这是使用此功能的示例
requireContext().showDialog(
title = "Your Title",
description = "Your Description",
titleOfPositiveButton = "yes",
titleOfNegativeButton = "No",
positiveButtonFunction = { // Run codes after click on positive button },
negativeButtonFunction = { // Run codes after click on negative button }
)
并且您需要在对话框的设计上保持一致的风格
<style name="Theme_Dialog" parent="android:Theme.Holo.Dialog">
<item name="android:windowMinWidthMajor">90%</item>
<item name="android:windowMinWidthMinor">90%</item>
</style>
通过这种方式,您可以使用自定义布局创建自己的对话框。
val dialogBuilder = AlertDialog.Builder(context, R.style.AlertDialogTheme)
val inflater = this.layoutInflater
val dialogView = inflater.inflate(R.layout.layout_chat_type_selection, null)
dialogBuilder.setView(dialogView)
val radioGroupChat = dialogView.radio_group_chat
dialogView.radioButton_user_chat.isChecked = true
dialogBuilder.setPositiveButton(getString(R.string.ok_text), object : DialogInterface.OnClickListener {
override fun onClick(dialog: DialogInterface, id: Int) {
when (radioGroupChat.checkedRadioButtonId) {
R.id.radioButton_user_chat -> {
(activity as HomeActivity).replaceFragment(MySkippersFragment.getInstance(isFromChat = true))
}
R.id.radioButton_circle_chat -> {
(activity as HomeActivity).replaceFragment(PickCircleFragment.getInstance(
PickCircleFragment.NEW_CIRCLE_CHAT), true)
}
}
}
})
dialogBuilder.setNegativeButton(getString(R.string.cancel_text), object : DialogInterface.OnClickListener {
override fun onClick(dialog: DialogInterface?, which: Int) {
}
})
val alertDialog = dialogBuilder.create()
alertDialog.show()
工作正常。您还可以按照您想要的方式自定义它。
主课:
class CustomAlertDialogOneButton( activity: Activity?,
private val alertOneButtonClickListener: OnAlertOneButtonClickListener):Dialog(activity!!) {
private var title = ""
private var text = ""
private var dialogId = -1
private var buttonName = ""
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.custom_alert_one_button_dialog)
setCancelable(false)
this.window?.setBackgroundDrawable(ColorDrawable(android.graphics.Color.TRANSPARENT))
viewsClickListenerInit()
}
override fun onStart() {
initDialog()
super.onStart()
}
private fun fillFields(title: String, text: String?, dialogId: Int, buttonName: String) {
clearDialog()
this.title = title
this.text = text ?: ""
this.dialogId = dialogId
this.buttonName = buttonName
}
private fun clearDialog() {
title = ""
text = ""
}
private fun initDialog() {
if (title.isNotBlank()) {
tvAlertTitle.text = title
}
if (text.isNotBlank()) {
tvAlertText.text = text
}
tvAlertButtonOk.text = buttonName
}
fun show(title: String, text: String?, dialogId: Int = -1, buttonName: String = ResourcesRepository.resources.getString(R.string.ok)) {
fillFields(title, text, dialogId, buttonName)
super.show()
}
private fun viewsClickListenerInit() {
tvAlertButtonOk.setOnClickListener {
alertOneButtonClickListener.okClickListener(dialogId)
dismiss()
}
}}
其 XML: 为其命名 - custom_alert_one_button_dialog.xml
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="280dp"
android:layout_height="145dp"
android:background="@color/colorWhite"
android:orientation="vertical">
<androidx.constraintlayout.widget.Guideline
android:id="@+id/center_vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.5" />
<TextView
android:id="@+id/tvAlertTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingStart="24dp"
android:paddingTop="22dp"
android:textAlignment="center"
android:textColor="@color/colorDarkGrey"
android:textSize="20sp"
android:textStyle="bold"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/tvAlertText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingStart="24dp"
android:paddingTop="13dp"
android:paddingEnd="24dp"
android:paddingBottom="10dp"
android:textColor="@color/colorGrey"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/tvAlertTitle" />
<TextView
android:id="@+id/tvAlertButtonOk"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingStart="10dp"
android:paddingTop="10dp"
android:paddingEnd="34dp"
android:paddingBottom="18dp"
android:text="@string/ok"
android:textColor="@color/colorDarkGrey"
android:textSize="14sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
按钮点击监听器接口:
interface OnAlertOneButtonClickListener {
fun okClickListener(dialogId: Int = -1)}
实施:
class SomeActivity : AppCompatActivity(), OnAlertOneButtonClickListener {
****
private var customDialogOneButton by lazy {
CustomAlertDialogOneButton(this, this)
}
****
customDialogOneButton.show(
title = "some title",
text = "some text",
dialogId = some int constant,
buttonName = "some button name"
)
****
override fun okClickListener(dialogId: Int) {
when (dialogId) {
some int constant -> {
// call method
}
}
}
我的自定义对话框 xml 文件:
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/dialogWindowBackground">
<TextView
android:id="@+id/popup_dialog"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="16sp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16sp"
android:layout_marginBottom="10dp"
android:text="@string/body"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
<LinearLayout
android:id="@+id/linearLayoutOpt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="16sp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16sp"
android:layout_marginBottom="10dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/popup_dialog">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="right"
android:orientation="horizontal">
<TextView
android:id="@+id/no_opt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:gravity="center_vertical"
android:paddingLeft="8dp"
android:paddingTop="8dp"
android:paddingRight="8dp"
android:paddingBottom="18dp"
android:text="No"
android:textAllCaps="false"
android:textColor="@color/colorAccent" />
<Space
android:layout_width="32sp"
android:layout_height="12sp" />
<TextView
android:id="@+id/yes_opt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:gravity="center_vertical"
android:paddingLeft="8dp"
android:paddingTop="8dp"
android:paddingRight="8dp"
android:paddingBottom="18dp"
android:text="Yes"
android:textAllCaps="false"
android:textColor="@color/colorAccent" />
</LinearLayout>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
我的 Kotlin 代码:
private fun showDialog() {
val customDialog = Dialog(requireActivity())
customDialog.setContentView(R.layout.custom_dialog)
customDialog.window?.setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
val yesBtn = customDialog.findViewById(R.id.yes_opt) as TextView
val noBtn = customDialog.findViewById(R.id.no_opt) as TextView
yesBtn.setOnClickListener {
//Do something here
customDialog.dismiss()
}
noBtn.setOnClickListener {
customDialog.dismiss()
}
customDialog.show()
}
如果有人想在对话框上显示 2 个按钮(通用解决方案)KOTLIN
fun createCustomTwoButtonDialog(
msg: String, context: Context?
, positiveButtonText: String, negativeButtonText: String,
isCancellable: Boolean,
dialogListener: DialogListener
) {
context?.let { context ->
val builder =
AlertDialog.Builder(context)
builder.setTitle("Your desired title")
builder.setMessage(msg)
builder.setCancelable(isCancellable)
builder.setPositiveButton(positiveButtonText) { dialogInterface: DialogInterface?, i: Int ->
dialogListener.onPositiveClick()
dialogInterface?.dismiss()
}
builder.setNegativeButton(negativeButtonText)
{ dialogInterface: DialogInterface?, i: Int ->
dialogListener.onNegativeClick()
dialogInterface?.dismiss()
}
val alertDialog = builder.create()
alertDialog.show()
}
}
DialogListener 是具有 2 个方法 onNegativeClick() 和 onPositiveClick() 的接口
我创建了这个 Kotlin 类:
class AnimDialog(private val context: Context) {
private val dialog = Dialog(context)
fun test(s: String) {
Log.i("TAG", "test: $s")
}
init{
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE)
dialog.window?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE)
dialog.window?.setBackgroundDrawable(ColorDrawable(Color.TRANSPARENT))
}
fun one(headerImage :Int?=null,
description: String,
titleOfPositiveButton: String? = null,
titleOfNegativeButton: String? = null,
positiveButtonFunction: (() -> Unit)? = null,
negativeButtonFunction: (() -> Unit)? = null
) :Dialog{
dialog.setCancelable(false)
dialog.setContentView(R.layout.dialog_one)
val dialogHeaderImage=dialog.findViewById(R.id.imageHead_dia) as ImageView
val dialogDescription = dialog.findViewById(R.id.description) as TextView
val dialogPositiveButton = dialog.findViewById(R.id.positiveButton) as Button
val dialogNegativeButton = dialog.findViewById(R.id.negativeButton) as Button
headerImage?.let { dialogHeaderImage.setImageResource(it) }
dialogHeaderImage.
startAnimation(
AnimationUtils.loadAnimation(
context,
R.anim.bounce
)
)
dialogDescription.text = description
titleOfPositiveButton?.let { dialogPositiveButton.text = it } ?: dialogPositiveButton.text
titleOfNegativeButton?.let { dialogNegativeButton.text = it } ?: dialogNegativeButton.text
dialogPositiveButton.setOnClickListener {
positiveButtonFunction?.invoke()
dialog.dismiss()
}
dialogNegativeButton.setOnClickListener {
negativeButtonFunction?.invoke()
dialog.dismiss()
}
return dialog
}
您必须定义的位置:
1- 布局
<dialog_one>
包括正btn、负btn、图像视图、文本视图
2- 动画
<bounce>
如果您想将动画添加到标题图像
现在处于活动:
val animDialog = AnimDialog(this)
animDialog.one(
headerImage = android.R.drawable.ic_delete,
description = "Sometimes we looking for new dialog to fill better \n ",
titleOfPositiveButton = "Accept it",
titleOfNegativeButton = "Not now",
positiveButtonFunction = {
animDialog.test("OK")
},
negativeButtonFunction = {
animDialog.test("NO")
}).show()