Easy-to-use bottom dialogs

BottomDialog.kt

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.annotation.LayoutRes
import androidx.annotation.StyleRes
import com.google.android.material.bottomsheet.BottomSheetDialogFragment
import com.rrtv.ui.R

/**
 * @author Dante
 * 2021/3/9
 */
class BottomDialog private constructor(
    @LayoutRes val layoutRes: Int,
    @StyleRes val styleRes: Int
) : BottomSheetDialogFragment() {

//    <style name="BottomSheetDialog" parent="Theme.MaterialComponents.Dialog">
//    <item name="android:windowBackground">@android:color/transparent</item>
//    <item name="android:windowAnimationStyle">
//    @style/Animation.MaterialComponents.BottomSheetDialog
//    </item>
//    </style>
    
    private lateinit var listener: OnViewCreatedListener

    companion object {
        fun newInstance(
            @LayoutRes layoutRes: Int = R.layout.dialog_common,
            @StyleRes styleRes: Int = R.style.BottomSheetDialog
        ): BottomDialog {
            return BottomDialog(layoutRes, styleRes)
        }
    }

    fun setOnViewCreated(listener: OnViewCreatedListener) {
        this.listener = listener
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setStyle(STYLE_NORMAL, styleRes)
    }

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        val view = inflater.inflate(layoutRes, container, false)
        view.findViewById<View>(R.id.cancel)?.setOnClickListener {
            dismissAllowingStateLoss()
        }
        if (this::listener.isInitialized) {
            listener.onViewCreated(view)
        }
        return view
    }

    interface OnViewCreatedListener {
        fun onViewCreated(view: View)
    }
}

BottomDialogFragment.kt

import android.app.Dialog
import android.os.Bundle
import android.view.*
import androidx.annotation.LayoutRes
import androidx.annotation.StyleRes
import androidx.fragment.app.DialogFragment
import com.same.android.R

abstract class BottomDialogFragment : DialogFragment() {

    @LayoutRes
    abstract fun getLayoutResId(): Int

    @StyleRes
    open fun getDialogStyle(): Int = R.style.BottomDialog

    open fun getDimAmount(): Float = 0.6f

    open fun getHeight() :Int = ViewGroup.LayoutParams.WRAP_CONTENT

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        return Dialog(requireContext(), getDialogStyle()).apply {
            window?.let {
                it.setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT)
                it.setBackgroundDrawableResource(android.R.color.transparent)
                it.setDimAmount(getDimAmount())
                val wlp = it.attributes
                wlp.gravity = Gravity.BOTTOM
                it.attributes = wlp
            }
        }
    }

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        return inflater.inflate(getLayoutResId(), container, false)
    }

    override fun onStart() {
        super.onStart()
        dialog?.window?.setLayout(WindowManager.LayoutParams.MATCH_PARENT, getHeight())
    }

}

dialog_styles.xml

<?xml version="1.0" encoding="utf-8"?>

<resources>
    <style name="BottomDialog" parent="Theme.AppCompat.Dialog">
        <item name="android:windowBackground">@android:color/transparent</item>
<!--    <item name="android:windowTranslucentNavigation">true</item>    --> // 打开可优化在有虚拟键手机上的动画效果
        <item name="android:windowAnimationStyle">@style/BottomDialogAnimation</item>
    </style>

    <style name="BottomDialogAnimation">
        <item name="android:windowEnterAnimation">@anim/slide_in_from_bottom</item>
        <item name="android:windowExitAnimation">@anim/slide_out_to_bottom</item>
    </style>

</resources>