Android 仿ios AlertDialog弹窗

Dolta中使用 部分样式没有上传 不建议他人使用

class AlertDialog(
    private val mContext: Context,
    private val config: Config = Config(mContext)
) : Dialog(mContext, R.style.AlertDialogStyle) {
    private val binding: MsDialogAlertBinding = DataBindingUtil.inflate(
        LayoutInflater.from(mContext), R.layout.ms_dialog_alert, null, false
    )
    private var showTitle = false
    private var showMsg = false
    private var showRightBtn = false
    private var showLeftBtn = false

    constructor(mContext: Context) : this(mContext, Config(mContext))

    init {
        // get custom Dialog layout
        binding.apply {
            tvTitle.visibility = View.GONE
            tvMsg.visibility = View.GONE
            vLine.visibility = View.VISIBLE
            btLeft.visibility = View.GONE
            btRight.visibility = View.GONE
            vBtnLine.visibility = View.GONE
        }

        // set Dialog style
        setContentView(binding.root)
    }

    fun setScaleWidth(scWidth: Double): AlertDialog {
        config.scaleWidth = scWidth
        setScaleWidth(binding.root, scWidth)
        return this
    }

    fun getRootView() = binding.root
    fun getTitleView() = binding.tvTitle
    fun getMessageView() = binding.tvMsg
    fun getLeftBtnView() = binding.btLeft
    fun getRightBtnView() = binding.btRight
    fun getLineView() = binding.vLine
    fun getBtnLineView() = binding.vBtnLine

    // 点击外围是否可取消
    fun setDialogCancelable(cancelable: Boolean = true): AlertDialog {
        setCancelable(cancelable)
        setCanceledOnTouchOutside(cancelable)
        return this
    }

    fun setDialogTitle(title: CharSequence?): AlertDialog {
        return setTitle(title, isBold = false)
    }

    override fun setTitle(title: CharSequence?) {
        super.setTitle(title)
        this.setTitle(title, isBold = false)
    }

    fun setTitle(
        title: CharSequence?,
        color: Int = config.titleColor,// 字体颜色
        spSize: Float = config.titleTextSizeSp,// 字体大小
        isBold: Boolean = false// 是否加粗
    ): AlertDialog {
        showTitle = true
        binding.tvTitle.apply {
            text = title ?: config.defNullText
            setTextColor(color)
            textSize = spSize
            setPadding(
                config.titlePaddingLeft,
                config.titlePaddingTop,
                config.titlePaddingRight,
                config.titlePaddingBottom
            )
            setTypeface(typeface, if (isBold) Typeface.BOLD else Typeface.NORMAL)
        }
        return this
    }

    fun setHtmlMessage(message: String?): AlertDialog {
        return setMessage(convertHtmlText(message))
    }

    // 将html类文本转换成普通文本
    fun convertHtmlText(htmlText: String?): Spanned {
        val source = htmlText ?: config.defNullText
        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            Html.fromHtml(source, Html.FROM_HTML_MODE_LEGACY)
        } else {
            Html.fromHtml(source)
        }
    }

    fun setMessage(message: CharSequence?) = setMessage(message, isBold = false)

    fun setMessage(
        message: CharSequence?,
        color: Int = config.messageColor,// 字体颜色
        spSize: Float = config.messageTextSizeSp, // 字体大小
        isBold: Boolean = false, // 是否加粗
        gravity: Int = Gravity.CENTER// 偏左，居中，偏右
    ): AlertDialog {
        showMsg = true
        binding.tvMsg.apply {
            text = message ?: config.defNullText
            setTextColor(color)
            this.gravity = gravity
            textSize = spSize
            setPadding(
                config.messagePaddingLeft,
                config.messagePaddingTop,
                config.messagePaddingRight,
                config.messagePaddingBottom
            )
            setTypeface(typeface, if (isBold) Typeface.BOLD else Typeface.NORMAL)
        }
        return this
    }

    fun setBottomViewHeightDp(heightDp: Float) = setBottomViewHeight(heightDp.dp2px(mContext))

    // 设置底部按钮高度
    fun setBottomViewHeight(heightPixels: Int = config.bottomViewHeight): AlertDialog {
        with(binding.llBottom) {
            config.bottomViewHeight = heightPixels
            layoutParams = layoutParams.apply { height = heightPixels }
        }
        return this
    }

    fun setLeftButton(
        text: CharSequence?,
        listener: View.OnClickListener? = null
    ) = setLeftButton(text, listener, config.leftBtnColor, config.leftBtnTextSizeSp, false)

    fun setLeftButton(
        text: CharSequence?,
        listener: View.OnClickListener? = null,
        color: Int = config.leftBtnColor,
        spSize: Float = config.leftBtnTextSizeSp,
        isBold: Boolean = false
    ): AlertDialog {
        showLeftBtn = true
        binding.btLeft.apply {
            this.text = text ?: config.defNullText
            setTextColor(color)
            textSize = spSize
            setTypeface(typeface, if (isBold) Typeface.BOLD else Typeface.NORMAL)
            setOnClickListener { v ->
                listener?.onClick(v)
                dismiss()
            }
        }
        return this
    }

    fun setRightButton(
        text: CharSequence?,
        listener: View.OnClickListener? = null
    ) = setRightButton(text, listener, config.rightBtnColor, config.rightBtnTextSizeSp, false)

    fun setRightButton(
        text: CharSequence?,
        listener: View.OnClickListener? = null,
        color: Int = config.rightBtnColor,
        spSize: Float = config.rightBtnTextSizeSp,
        isBold: Boolean = false,
        isForce: Boolean? = false
    ): AlertDialog {
        showRightBtn = true
        binding.btRight.apply {
            this.text = text ?: config.defNullText
            setTextColor(color)
            textSize = spSize
            setTypeface(typeface, if (isBold) Typeface.BOLD else Typeface.NORMAL)
            setOnClickListener { v ->
                listener?.onClick(v)
                if (!isForce!!){
                    dismiss()
                }

            }
        }
        return this
    }

    private fun setLayout() {
        setScaleWidth(binding.root, config.scaleWidth)
        setBottomViewHeight()

        binding.apply {
            llContent.background = config.dialogBg
            with(vLine) {
                background = config.dividerColor
                layoutParams = layoutParams.apply { height = config.dividerWidth }
            }
            with(vBtnLine) {
                background = config.dividerColor
                layoutParams = layoutParams.apply { width = config.dividerWidth }
            }
            if (!showTitle && !showMsg) {
                tvTitle.text = config.defNullText
                tvTitle.visibility = View.VISIBLE
            }
            tvTitle.visibility = if (showTitle) View.VISIBLE else View.GONE
            tvMsg.visibility = if (showMsg) View.VISIBLE else View.GONE
            // zero button
            if (!showRightBtn && !showLeftBtn) {
                vLine.visibility = View.GONE
                llBottom.visibility = View.GONE
            }
            // one button
            if (showRightBtn && !showLeftBtn) {
                btRight.visibility = View.VISIBLE
                btRight.background = config.singleBtnBg
            }
            if (!showRightBtn && showLeftBtn) {
                btLeft.visibility = View.VISIBLE
                btLeft.background = config.singleBtnBg
            }
            // two button
            if (showRightBtn && showLeftBtn) {
                btLeft.visibility = View.VISIBLE
                btLeft.background = config.leftBtnBg
                vBtnLine.visibility = View.VISIBLE
                btRight.visibility = View.VISIBLE
                btRight.background = config.rightBtnBg
            }
        }
    }

    override fun show() {
        setLayout()
        super.show()
    }


    /**
     * AlertDialog 的配置
     */
    open class Config(
        var context: Context
    ) : Serializable {
        var scaleWidth: Double = 0.75 // 宽度占屏幕宽百分比
        var defNullText: String = "null" // 默认空文本

        // title
        var titleTextSizeSp: Float = 18f // 字体大小
        var titleColor: Int = ContextCompat.getColor(context, R.color.ms_def_title_color) // 字体颜色
        var titlePaddingLeft: Int = 15f.dp2px(context) // 左边距
        var titlePaddingTop: Int = 22f.dp2px(context) // 上边距
        var titlePaddingRight: Int = 15f.dp2px(context) // 右边距
        var titlePaddingBottom: Int = 0f.dp2px(context) // 下边距

        // message
        var messageTextSizeSp: Float = 14f // 字体大小
        var messageColor: Int =
            ContextCompat.getColor(context, R.color.ms_def_message_color) // 字体颜色
        var messagePaddingLeft: Int = 15f.dp2px(context) // 左边距
        var messagePaddingTop: Int = 22f.dp2px(context) // 上边距
        var messagePaddingRight: Int = 15f.dp2px(context) // 右边距
        var messagePaddingBottom: Int = 22f.dp2px(context) // 下边距

        // button
        var bottomViewHeight: Int = 48f.dp2px(context) // 底部按钮高度
        var dialogBg: Drawable? =
            ContextCompat.getDrawable(context, R.drawable.ms_shape_alert_dialog_bg) // 整个Dialog的背景
        var singleBtnBg: Drawable? =
            ContextCompat.getDrawable(context, R.drawable.ms_sel_alert_dialog_single) // 单按钮背景

        // left button
        var leftBtnTextSizeSp: Float = 18f // 字体大小
        var leftBtnColor: Int = ContextCompat.getColor(context, R.color.ms_def_left_color) // 字体颜色
        var leftBtnBg: Drawable? =
            ContextCompat.getDrawable(context, R.drawable.ms_sel_alert_dialog_left) // 左侧按钮背景

        // right button
        var rightBtnTextSizeSp: Float = 18f // 字体大小
        var rightBtnColor: Int = ContextCompat.getColor(context, R.color.ms_def_right_color) // 字体颜色
        var rightBtnBg: Drawable? =
            ContextCompat.getDrawable(context, R.drawable.ms_sel_alert_dialog_right) // 右侧按钮背景

        // divider 分割线
        var dividerWidth: Int = 1 //0.4f.dp2px(context) // 分割线宽度
        var dividerColor: Drawable = ColorDrawable(Color.parseColor("#C9C9C9"))// 分割线

    }
}

调用方式如下：

AlertDialog(mContext as BaseActivity).apply {
                            setCancelable(true)
                            setScaleWidth(0.5) // 设置宽度，占屏幕宽度百分比
                            // getMessageView().setPadding(15f.dp2px(context), 24f.dp2px(context), 15f.dp2px(context), 24f.dp2px(context))
                            setMessage("Are you sure you want to delete this piece album? This cannot be undone. ")
                            setRightButton(
                                "Delete",
                                color = (mContext as BaseActivity).resources.getColor(R.color.base_color),
                                listener = View.OnClickListener {
                                    showToast("Success")
                                  
                                })
                            setLeftButton(
                                "Cancel",
                                color = (mContext as BaseActivity).resources.getColor(R.color.base_color),
                                listener = View.OnClickListener {
                                    dialog?.dismiss()
                                }
                            )
                            setScaleWidth(0.85)

                        }.show()