Android 实现一个隐私弹窗功能

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/dialogroot"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/bg_dialog_rounded"
    android:orientation="vertical"
    android:padding="24dp">
    <textview
        android:id="@+id/tvtitle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="用户协议和隐私政策"
        android:textcolor="#222222"
        android:textsize="18sp"
        android:textstyle="bold"
        android:gravity="center"
        android:layout_marginbottom="16dp"/>
    <textview
        android:id="@+id/tvcontent"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textcolor="#444444"
        android:textsize="15sp"
        android:linespacingextra="4dp" />
    <linearlayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_margintop="24dp"
        android:gravity="center">
        <androidx.appcompat.widget.appcompatbutton
            android:id="@+id/btnexit"
            android:layout_width="0dp"
            android:layout_height="48dp"
            android:layout_weight="1"
            android:text="退出应用"
            android:textcolor="#5e5c3f"
            android:background="@drawable/bg_button_outline"
            android:textsize="16sp" />
        <view
            android:layout_width="16dp"
            android:layout_height="0dp" />
        <androidx.appcompat.widget.appcompatbutton
            android:id="@+id/btnagree"
            android:layout_width="0dp"
            android:layout_height="48dp"
            android:layout_weight="1.5"
            android:text="已阅读并同意"
            android:textcolor="#ffffff"
            android:background="@drawable/bg_button_primary"
            android:textsize="16sp" />
    </linearlayout>
</linearlayout>

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid android:color="#ffffff"/>
    <corners android:radius="14dp"/>
</shape>

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid android:color="#ffffff" />
    <stroke android:width="0.5dp" android:color="#5e5c3f" />
    <corners android:radius="8dp" />
</shape>

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid android:color="#5e5c3f" />
    <corners android:radius="8dp" />
</shape>

import android.content.context
import android.graphics.color
import android.graphics.drawable.colordrawable
import android.text.spannablestring
import android.text.spanned
import android.text.method.linkmovementmethod
import android.text.style.clickablespan
import android.view.layoutinflater
import android.view.view
import android.widget.button
import android.widget.textview
import androidx.appcompat.app.alertdialog
class privacypolicydialog(
    private val context: context,
    private val onagree: () -> unit,
    private val onexit: () -> unit,
    private val onclickuseragreement: () -> unit,
    private val onclickprivacypolicy: () -> unit
) {
    fun show() {
        val view = layoutinflater.from(context).inflate(r.layout.dialog_privacy_policy, null)
        val tvcontent = view.findviewbyid<textview>(r.id.tvcontent)
        val tvtitle = view.findviewbyid<textview>(r.id.tvtitle)
        val btnagree = view.findviewbyid<button>(r.id.btnagree)
        val btnexit = view.findviewbyid<button>(r.id.btnexit)
        val content = "在您使用本应用之前，请您务必审慎阅读、充分理解“用户协议”和“隐私政策”各条款内容。详细资料请阅读：《用户协议》和《隐私政策》。"
        val spannable = spannablestring(content)
        val userstart = content.indexof("《用户协议》")
        val userend = userstart + "《用户协议》".length
        val privacystart = content.indexof("《隐私政策》")
        val privacyend = privacystart + "《隐私政策》".length
        spannable.setspan(object : clickablespan() {
            override fun onclick(widget: view) {
                onclickuseragreement()
            }
        }, userstart, userend, spanned.span_exclusive_exclusive)
        spannable.setspan(object : clickablespan() {
            override fun onclick(widget: view) {
                onclickprivacypolicy()
            }
        }, privacystart, privacyend, spanned.span_exclusive_exclusive)
        tvcontent.text = spannable
        tvcontent.movementmethod = linkmovementmethod.getinstance()
        tvcontent.highlightcolor = color.transparent
        val dialog = alertdialog.builder(context)
            .setview(view)
            .setcancelable(false)
            .create()
        dialog.window?.setbackgrounddrawable(colordrawable(color.transparent))
        btnagree.setonclicklistener {
            onagree()
            dialog.dismiss()
        }
        btnexit.setonclicklistener {
            onexit()
            dialog.dismiss()
        }
        dialog.show()
    }
}

package com.example.poemapp
import androidx.appcompat.app.appcompatactivity
import android.os.bundle
import android.view.viewgroup
import android.widget.button
import android.widget.toast
import androidx.appcompat.app.alertdialog
class mainactivity : appcompatactivity() {
    override fun oncreate(savedinstancestate: bundle?) {
        super.oncreate(savedinstancestate)
        setcontentview(r.layout.activity_main)
        privacypolicydialog(
            context = this,
            onagree = {
                toast.maketext(this, "用户已同意", toast.length_short).show()
                // todo: 记录已同意状态
            },
            onexit = {
                finish()
            },
            onclickuseragreement = {
                // todo: 跳转用户协议页面
            },
            onclickprivacypolicy = {
                // todo: 跳转隐私政策页面
            }
        ).show()
    }
}