[英]Android: Custom layout for DialogFragment is not showing fully in it's width like AlertDialog
我使用 DialogFragment 擴展了這個自定義 ConfirmationDialogFragment,我想復制 AlertDialog 的相同行為,但使用自定義行為。 這樣下次我可以在需要具有自定義布局的警報對話框時應用它,並可能將其作為參數添加到我的對話框 class 中。 問題是我無法像在 AlertDialog 中那樣顯示對話框並匹配父級,請參考這個
.
我的對話片段 class:
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.databinding.DataBindingUtil
import androidx.fragment.app.DialogFragment
private const val KEY_MESSAGE = "ConfirmationDialogFragment.KEY_MESSAGE"
class ConfirmationDialogFragment : DialogFragment() {
private lateinit var binding: DialogFragmentConfirmationBinding
private var onOkClicked: (() -> Unit)? = null
private var onCancelClicked: (() -> Unit)? = null
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
val message = arguments?.getString(KEY_MESSAGE) ?: ""
binding = DataBindingUtil.inflate(
LayoutInflater.from(context),
R.layout.dialog_fragment_confirmation,
null,
false
)
binding.message = message
binding.onClickedOk = View.OnClickListener {
onOkClicked?.invoke()
dismiss()
}
binding.onClickedCancel = View.OnClickListener {
onCancelClicked?.invoke()
dismiss()
}
return binding.root
}
fun setOnOkClicked(onOkClicked: () -> Unit) {
this.onOkClicked = onOkClicked
}
fun setOnCancelClicked(onCancelClicked: () -> Unit) {
this.onCancelClicked = onCancelClicked
}
companion object {
fun newInstance(message: String) = ConfirmationDialogFragment().apply {
arguments = Bundle().apply {
putString(KEY_MESSAGE, message)
}
}
}
}
xml 布局:
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<data>
<variable
name="message"
type="String" />
<variable
name="onClickedOk"
type="android.view.View.OnClickListener" />
<variable
name="onClickedCancel"
type="android.view.View.OnClickListener" />
<import type="android.view.View" />
</data>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="8sp">
<androidx.appcompat.widget.AppCompatTextView
android:id="@+id/messageTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="12dp"
android:text="@{message}"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Save?" />
<androidx.appcompat.widget.AppCompatButton
android:id="@+id/cancleButton"
style="@style/AppTheme.BodyTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@android:color/transparent"
android:onClick="@{onClickedCancel}"
android:text="Cancel"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="@+id/appCompatButton2"
app:layout_constraintTop_toBottomOf="@+id/messageTextView" />
<androidx.appcompat.widget.AppCompatButton
android:id="@+id/appCompatButton2"
style="@style/AppTheme.BodyTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@android:color/transparent"
android:onClick="@{onClickedOk}"
android:text="Yes"
app:layout_constraintBottom_toBottomOf="@+id/cancleButton"
app:layout_constraintEnd_toEndOf="@+id/messageTextView"
app:layout_constraintTop_toTopOf="@+id/cancleButton" />
</androidx.constraintlayout.widget.ConstraintLayout>
</layout>
styles xml:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="AppTheme.Base" parent="Theme.AppCompat.Light.DarkActionBar" />
<style name="AppTheme" parent="AppTheme.Base">
<item name="colorAccent">@color/black</item>
<item name="windowActionBar">false</item>
<item name="coordinatorLayoutStyle">@style/Widget.Support.CoordinatorLayout</item>
<item name="windowNoTitle">true</item>
<item name="colorButtonNormal">@android:color/darker_gray</item>
<item name="buttonStyle">@style/AppTheme.AppThemeButton</item>
</style>
<style name="AppTheme.AppThemeButton">
<item name="android:layout_width">match_parent</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:layout_marginStart">16dp</item>
<item name="android:layout_marginEnd">16dp</item>
<item name="android:textSize">16sp</item>
<item name="android:gravity">center</item>
<item name="android:padding">16dp</item>
<item name="android:textColor">@color/white</item>
<item name="android:foreground">?android:attr/selectableItemBackground</item>
<item name="android:textStyle">bold</item>
</style>
<style name="AppTheme.BodyTitle">
<item name="android:textSize">14sp</item>
<item name="android:textStyle">normal</item>
</style>
</resources>
這就是我在我的活動中使用它的方式:
val dialog = ConfirmationDialogFragment.newInstance(getString(R.string.info_unsaved_data)).apply {
setOnOkClicked {
// do something
}
setOnCancelClicked {
// do something
}
}
dialog.show(supportFragmentManager, null)
已經嘗試過您擁有的代碼,結果發現您真的需要覆蓋 Dialog 主題,
從您的ConfirmationDialogFragment
class
override fun getTheme() = R.style.AppTheme_Alert
並從您的 styles 中添加此內容,但 colorAccent 只是可選的,呵呵。
<style name="AppTheme.Alert" parent="Theme.AppCompat.Light.Dialog.Alert">
<item name="colorAccent">@color/black</item>
</style>
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