HopoPay 支付接入文档

// 1. 注册结果回调
private var pendingToken: String? = null

private val payLauncher = registerForActivityResult(
    ActivityResultContracts.StartActivityForResult()
) { result ->
    if (result.resultCode == RESULT_OK && result.data != null) {
        val data = result.data!!
        // ★ 校验令牌，防止伪造回调
        if (data.getStringExtra("paymentToken") != pendingToken) return@registerForActivityResult
        val amount = data.getDoubleExtra("amount", 0.0)
        val username = data.getStringExtra("username") ?: ""
        Toast.makeText(this, "$username 支付 ¥$amount 成功", Toast.LENGTH_SHORT).show()
    } else {
        Toast.makeText(this, "支付取消", Toast.LENGTH_SHORT).show()
    }
}

// 2. 发起支付
fun pay(amount: Double, payee: String, product: String) {
    val token = UUID.randomUUID().toString()
    pendingToken = token
    val intent = Intent("com.eightb.pay.action.PAY").apply {
        putExtra("amount", amount)
        putExtra("payee", payee)
        putExtra("productName", product)
        putExtra("paymentToken", token)
    }
    if (intent.resolveActivity(packageManager) != null) {
        payLauncher.launch(intent)
    } else {
        // 引导用户安装 HopoPay
    }
}

// 时长支付：扣 30 分钟
Intent("com.eightb.pay.action.PAY_TIME").apply {
    putExtra("timeAmount", 30)
    putExtra("payee", payee); putExtra("productName", product)
    putExtra("paymentToken", token)
}

// 机会支付：扣 2 个「大」机会
Intent("com.eightb.pay.action.PAY_CHANCE").apply {
    putExtra("opportunityType", "big")
    putExtra("opportunityAmount", 2)
    putExtra("payee", payee); putExtra("productName", product)
    putExtra("paymentToken", token)
}

fun isHopoPayInstalled(): Boolean {
    val intent = Intent("com.eightb.pay.action.PAY")
    return intent.resolveActivity(packageManager) != null
}

fun goToDownload() {
    val intent = Intent(Intent.ACTION_VIEW).apply {
        data = Uri.parse("https://hopopay.example.com/download")
    }
    startActivity(intent)
}