如何自定义一个 DialogFragment？

Question

我尝试创建自定义 DialogFragment。问题是它看起来不像我想要的那样。我创建了一个布局：

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
    android:layout_width="match_parent"
    android:layout_height="239dp"
    android:background="#00f">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/constraintLayout"
        android:layout_width="match_parent"
        android:layout_height="210dp"
        android:layout_marginStart="20dp"
        android:layout_marginLeft="20dp"
        android:layout_marginEnd="20dp"
        android:layout_marginRight="20dp"
        android:background="@drawable/pop_up_shape"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

    </androidx.constraintlayout.widget.ConstraintLayout>

    <Button
        android:id="@+id/button3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

它看起来像这样：

我创建了一个 class:

class AddPlaylistPopUp: DialogFragment(){

    override fun onCreateDialog(
        savedInstanceState: Bundle?
    ): Dialog {
        val builder = AlertDialog.Builder(context!!)
        builder.setView(R.layout.add_playlist_popup_layout)
        return builder.create()
    }
}

我是这样呈现的：

fun openDialog(){
    val fm = fragmentManager!!
    val editNameDialogFragment = AddPlaylistPopUp()
    editNameDialogFragment.show(fm, "fragment_edit_name")
}

这是结果：

如您所见，弹出窗口看起来不像我创建的自定义布局... 我究竟做错了什么？有不必要的侧边距，绿色视图更大，按钮在绿色视图内。我尝试了很多东西，但没有任何效果。如何让它看起来 100% 像我的布局？

Answer 1

我找到了解决办法。可以使用 Dialog 代替 DialogFragment。

class AddPlaylistPopUp(context: Context, themeResId: Int) : Dialog(context, themeResId) {

    init {
        window?.setLayout(
            ViewGroup.LayoutParams.MATCH_PARENT,
            ViewGroup.LayoutParams.MATCH_PARENT
        )
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.add_playlist_popup_layout)
        popUpContainer.setOnClickListener { dismiss() }
        popUpCard.setOnClickListener {}
    }
}

可以这样使用：

private fun openDialog(){
        val addPlaylistPopUp = AddPlaylistPopUp(this.context!!, R.style.DialogAlertTheme)
        addPlaylistPopUp.show()
    }

这是风格：

<!-- Dialog theme -->
    <style name="DialogAlertTheme">
        <item name="android:windowBackground">@android:color/transparent</item>
    </style>

我也稍微改变了一下布局：

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    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"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/popUpContainer"
    >

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="0dp"
        android:layout_height="239dp"
        android:background="#00f"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:id="@+id/popUpBackground"
        >

        <androidx.constraintlayout.widget.ConstraintLayout
            android:id="@+id/popUpCard"
            android:layout_width="match_parent"
            android:layout_height="210dp"
            android:layout_marginStart="20dp"
            android:layout_marginLeft="20dp"
            android:layout_marginEnd="20dp"
            android:layout_marginRight="20dp"
            android:background="@drawable/pop_up_shape"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            android:focusable="false"
            android:clickable="false"
            >

        </androidx.constraintlayout.widget.ConstraintLayout>

        <Button
            android:id="@+id/button3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="1dp"
            android:text="Button"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</androidx.constraintlayout.widget.ConstraintLayout>

结果如我所愿：

如何自定义一个 DialogFragment？

How to customize a DialogFragment?

android

kotlin

android-dialogfragment

dialogfragment