如何修复 Android Kotlin 中已弃用的 startActivityForResult() 问题

Question

我正在 Kotlin 中开发 Android 应用程序，其中有付款功能，该功能位于活动的主 ui 线程中，但我想创建一个单独的付款活动并使用协程在其他 Ui 线程中处理它，我正在使用意图过滤器将此活动的数据传递到我的付款活动，但这已被弃用

 startActivityForResult()

我该如何修复此问题请帮助我，这里是我的代码片段。

fun onClickJoin(view: View) {

        if (binding.joinNowTxt.text.toString() == resources.getString(R.string.join_now)) {
           val paymentIntent = Intent(this,PaymentActivity::class.java).apply {
               putExtra("PAYMENT_AMOUNT",test_list[position].joinAmount.toFloat().toInt())
               putExtra("TEST_ID",test_list[position].testId)
           }
            //this is deprecated
            startActivityForResult(paymentIntent, PAYMENT_REQUEST_CODE)
        } else {
            bindingPayment.choosePaymentLayout.visibility = View.GONE
            if (isAttemp == 2) {
                val intent = Intent(applicationContext, AttemptTestActivity::class.java)
                intent.putExtra("Test_Id", test_list[position].testId)
                intent.putExtra("Category_Id", category_id)
                intent.putExtra("Result_Auto_Publish", result_auto_publish)
                Log.e("Intent Data", "Starting AttemptTestActivity")
                startActivity(intent)
            }
        }

我需要此问题的帮助

Answer 1

以下是更新代码的方法

1. 声明 ActivityResultLauncher:

   private lateinit var paymentResultLauncher: ActivityResultLauncher<Intent>
   

2. 在onCreate()中注册启动器：

    override fun onCreate(savedInstanceState: Bundle?) {
           super.onCreate(savedInstanceState)
           setContentView(R.layout.activity_main)
   
           // Register the launcher
           paymentResultLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
               if (result.resultCode == Activity.RESULT_OK) {
                   // Handle the result from PaymentActivity
                   val data: Intent? = result.data
                   val paymentStatus = data?.getStringExtra("PAYMENT_STATUS")
                   Log.d("Payment", "Payment status: $paymentStatus")
               } else {
                   // Handle cancellation or failure
                   Log.d("Payment", "Payment failed or cancelled")
               }
           }
       }
   

3. 使用注册的启动器启动 PaymentActivity：

   fun onClickJoin(view: View) {
    if (binding.joinNowTxt.text.toString() == resources.getString(R.string.join_now)) {
        val paymentIntent = Intent(this, PaymentActivity::class.java).apply {
            putExtra("PAYMENT_AMOUNT", test_list[position].joinAmount.toFloat().toInt())
            putExtra("TEST_ID", test_list[position].testId)
        }
        // Use the registered launcher instead of startActivityForResult()
        paymentResultLauncher.launch(paymentIntent)
    } else {
        bindingPayment.choosePaymentLayout.visibility = View.GONE
        if (isAttemp == 2) {
            val intent = Intent(applicationContext, AttemptTestActivity::class.java)
            intent.putExtra("Test_Id", test_list[position].testId)
            intent.putExtra("Category_Id", category_id)
            intent.putExtra("Result_Auto_Publish", result_auto_publish)
            Log.e("Intent Data", "Starting AttemptTestActivity")
            startActivity(intent)
        }
    }
   

   }