Android 实现一个隐私弹窗功能

效果图如下：

1. 设置同意、退出、点击用户协议、点击隐私协议的函数参数

2. 《用户协议》、《隐私政策》设置成可点击的，且颜色要区分出来

res/layout/dialog_privacy_policy.xml 文件

res/drawable/bg_dialog_rounded.xml 文件

res/drawable/bg_button_outline.xml文件

res/drawable/bg_button_primary.xml文件

privacypolicydialog.kt 文件

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(r.id.tvcontent)
        val tvtitle = view.findviewbyid(r.id.tvtitle)
        val btnagree = view.findviewbyid(r.id.btnagree)
        val btnexit = view.findviewbyid(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()
    }
}

mainactivity.kt

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()
    }
}

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