Kotlin 自定义AlertDialog

 最近写的一个简易选择框

 长这个样子：

 

有多种模式：

1.输入框模式，有一个标题一个输入框。见上图（构造方法中 isEdit 字段 true的时候是开启输入框）

2.还有一种提示模式，有一个标题一个内容。

扩展：更多模式 比如  一个标题一个内容一个输入框，等。。。  

/**
 * Created by Xinghai.Zhao on 2020/8/4.
 * 自定义选择弹框
 */
class MyDialog(context: Context?) : AlertDialog(context), View.OnClickListener {

    var call: clickCallBack? = null;
    var TextView_title: TextView? = null;
    var TextView_content: TextView? = null;
    var editText: EditText? = null;
    var yesButton: View? = null;
    var noButton: View? = null;

    constructor(context: Context?, title: String, content: String, yesCallBack: clickCallBack)
            : this(context, title, content, yesCallBack, false) {
    }

    constructor(context: Context?, title: String, content: String, yesCallBack: clickCallBack, isEdit: Boolean) : this(context) {
        call = yesCallBack
        if (title != null) TextView_title?.setText(title);
        if (content != null) TextView_content?.setText(title);
        if (isEdit){
            TextView_content?.visibility = View.GONE
            editText?.visibility=View.VISIBLE
            val filters = arrayOf<InputFilter>(InputFilter.LengthFilter(10)) // 最大输入长度
            editText?.filters = filters
            editText?.isFocusable = true
            editText?.isFocusableInTouchMode = true
            editText?.requestFocus()
            editText?.keyListener = object : DigitsKeyListener() {
                override fun getInputType(): Int {
                    return InputType.TYPE_TEXT_VARIATION_PASSWORD
                }

                override fun getAcceptedChars(): CharArray {
                    return context?.resources!!.getString(R.string.edit_input)?.toCharArray()
                }
            }
        }

    }

    init {
        val inflate = LayoutInflater.from(context).inflate(R.layout.dialog_my, null);
        setView(inflate)
        //设置点击别的区域不关闭页面
        setCancelable(false)

        TextView_title = inflate.findViewById<TextView>(R.id.dialog_my_title)
        TextView_content = inflate.findViewById<TextView>(R.id.dialog_my_content)
        editText = inflate.findViewById<EditText>(R.id.dialog_my_edit)
        yesButton = inflate.findViewById<View>(R.id.dialog_my_yes)
        noButton = inflate.findViewById<View>(R.id.dialog_my_no)

        yesButton?.setOnClickListener(this)
        noButton?.setOnClickListener{dismiss()}
    }


    override fun onClick(p0: View?) {
        call?.yesClick(this);
    }

    interface clickCallBack {
        fun yesClick(dialog:MyDialog)
    }


}

外部调用代码

            /*
             *作者:赵星海
             *时间:2020/6/17 11:07
             *用途: 输入台牌号
             */
            val myDialog =MyDialog(activity,"请输入台牌号","",object :MyDialog.clickCallBack{
                override fun yesClick(dialog: MyDialog) {
                    val input:String =dialog.editText?.text.toString()
                    if (input==null||input .equals("")) {
                        Toast.makeText(activity, "台牌号不能为空！", Toast.LENGTH_LONG).show()
                    } else {
                        //此处写后续逻辑
                        dialog?.dismiss()
                    }
                }
            },true)
            myDialog.setOnDismissListener {
                //关闭监听逻辑
            }
            //显示的位置居中提高100dp-------------
            val w = myDialog.window
            val lp = w!!.attributes
            lp.x = 0
            lp.y = -100
            //-----------------------------------

            myDialog.show();
            //显示的宽高根据屏幕半分比调整-----------------------------------
            val m = activity!!.windowManager
            val d = m.defaultDisplay //为获取屏幕宽、高

            val p = myDialog.window!!.attributes //获取对话框当前的参数值

            p.height = (d.height * 0.40).toInt() //高度设置为屏幕的0.3

            p.width = (d.width * 0.45).toInt() //宽度设置为屏幕的0.5

            myDialog.window!!.attributes = p
            //--------------------------------------------------------------

下面加分割线的两段代码，其功能我已经写注释咯！