生成二维码
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package com.example.defenseapplication.personal
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import android.graphics.Bitmap
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import android.graphics.Canvas
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import android.graphics.Color
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import android.graphics.Paint
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import android.os.Bundle
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import android.view.LayoutInflater
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import android.view.View
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import android.widget.RadioButton
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import android.widget.RadioGroup
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import androidx.appcompat.app.AppCompatActivity
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import com.google.android.material.bottomsheet.BottomSheetDialog
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import androidx.core.content.ContextCompat
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import com.example.defenseapplication.R
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import com.example.defenseapplication.databinding.DialogExpireTimeBinding
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import com.example.defenseapplication.databinding.InvitationCodeActivityBinding
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import com.google.zxing.BarcodeFormat
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import com.google.zxing.EncodeHintType
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import com.google.zxing.qrcode.QRCodeWriter
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel
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import com.gyf.immersionbar.ImmersionBar
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import java.util.Hashtable
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//邀请码页面
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class InvitationCodeActivity : AppCompatActivity() {
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private lateinit var binding: InvitationCodeActivityBinding
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private var expireTimeInMillis: Long = 24 * 60 * 60 * 1000 // 默认24小时
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private var selectedExpireOption: Int = 0 // 0: 24h, 1: 7d，默认选中24h
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companion object {
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const val EXPIRE_24H = 24 * 60 * 60 * 1000L
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const val EXPIRE_7D = 7 * 24 * 60 * 60 * 1000L
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}
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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binding = InvitationCodeActivityBinding.inflate(layoutInflater)
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setContentView(binding.root)
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ImmersionBar.with(this)
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.statusBarDarkFont(true)
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.titleBar(binding.topBar)
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.init()
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initListener()
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// 默认显示时效为24h
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binding.tvExpireTime.text = getString(R.string.expire_24h)
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// 默认显示灰色占位区域，二维码不可见
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hideQrCode()
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}
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private fun initListener() {
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binding.ivBack.setOnClickListener {
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finish()
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}
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binding.llExpireTime.setOnClickListener {
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showExpireTimeDialog()
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}
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binding.llWechatShare.setOnClickListener {
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// 微信分享功能
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shareToWeChat()
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}
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}
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private fun showExpireTimeDialog() {
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val dialogBinding = DialogExpireTimeBinding.inflate(LayoutInflater.from(this))
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val dialog = BottomSheetDialog(this, R.style.BottomSheetDialog)
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dialog.setContentView(dialogBinding.root)
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// 设置选中状态
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when (selectedExpireOption) {
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0 -> dialogBinding.rb24h.isChecked = true
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1 -> dialogBinding.rb7d.isChecked = true
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}
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dialogBinding.radioGroup.setOnCheckedChangeListener { _, checkedId ->
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when (checkedId) {
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R.id.rb24h -> selectedExpireOption = 0
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R.id.rb7d -> selectedExpireOption = 1
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}
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}
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dialogBinding.tvCancel.setOnClickListener {
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dialog.dismiss()
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}
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dialogBinding.tvConfirm.setOnClickListener {
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when (selectedExpireOption) {
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0 -> {
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expireTimeInMillis = EXPIRE_24H
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binding.tvExpireTime.text = getString(R.string.expire_24h)
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}
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1 -> {
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expireTimeInMillis = EXPIRE_7D
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binding.tvExpireTime.text = getString(R.string.expire_7d)
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}
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}
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// 选择后显示二维码并生成
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showQrCode()
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generateQRCode()
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dialog.dismiss()
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}
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dialog.show()
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}
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private fun hideQrCode() {
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// 隐藏二维码，显示灰色占位区域
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binding.ivQrCode.visibility = View.GONE
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binding.ivQrLogo.visibility = View.GONE
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binding.vQrPlaceholder.visibility = View.VISIBLE
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}
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private fun showQrCode() {
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// 显示二维码，隐藏灰色占位区域
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binding.vQrPlaceholder.visibility = View.GONE
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binding.ivQrCode.visibility = View.VISIBLE
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binding.ivQrLogo.visibility = View.VISIBLE
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}
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private fun generateQRCode() {
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val content = generateInviteCode()
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val qrBitmap = createQRCodeWithLogo(content, 400, 400)
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binding.ivQrCode.setImageBitmap(qrBitmap)
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}
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private fun generateInviteCode(): String {
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// 生成包含邀请信息的JSON字符串
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val timestamp = System.currentTimeMillis()
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val expireTime = timestamp + expireTimeInMillis
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return "{\"type\":\"invite\",\"code\":\"INV${timestamp}\",\"expire\":$expireTime}"
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}
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private fun createQRCodeWithLogo(content: String, width: Int, height: Int): Bitmap? {
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return try {
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val hints = Hashtable<EncodeHintType, Any>()
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hints[EncodeHintType.CHARACTER_SET] = "UTF-8"
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hints[EncodeHintType.ERROR_CORRECTION] = ErrorCorrectionLevel.H
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val writer = QRCodeWriter()
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val bitMatrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints)
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val qrBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888)
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val canvas = Canvas(qrBitmap)
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// 绘制白色背景
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canvas.drawColor(Color.WHITE)
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// 绘制二维码
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val paint = Paint(Paint.ANTI_ALIAS_FLAG)
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paint.color = Color.BLACK
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val cellWidth = width.toFloat() / bitMatrix.width
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val cellHeight = height.toFloat() / bitMatrix.height
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for (x in 0 until bitMatrix.width) {
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for (y in 0 until bitMatrix.height) {
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if (bitMatrix.get(x, y)) {
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canvas.drawRect(
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x * cellWidth,
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y * cellHeight,
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(x + 1) * cellWidth,
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(y + 1) * cellHeight,
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paint
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)
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}
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}
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}
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qrBitmap
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} catch (e: Exception) {
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e.printStackTrace()
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null
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}
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}
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private fun shareToWeChat() {
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// 微信分享实现
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// 这里需要集成微信SDK
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}
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override fun onDestroy() {
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super.onDestroy()
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}
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}
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