android onActivityResult 未在 Fragment 中调用

Question

我想用这个 sample 实现应用程序计费。我在 fragment.everything 中实现它是 ok.but 当返回结果时我应该调用 onactivityresult.I 使用 onactivityresult在片段中访问 aibHelper 来管理它，但 onactivityresult 永远不会是 called.what 我应该在片段

中调用 onactivityresult

这是我的代码：

class CartFragment : Fragment(), IabHelper.OnIabPurchaseFinishedListener,IabHelper.OnConsumeFinishedListener {

    lateinit var viewModel: CartViewModel
    lateinit var bazarViewModel: BazarViewModel
    lateinit var iabHelper: IabHelper
    var productId = ""
    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        var view = inflater.inflate(R.layout.fragment_cart, container, false)
        var recycler = view.findViewById<RecyclerView>(R.id.rv_cart_list)
        recycler.layoutManager = LinearLayoutManager(context)
        iabHelper = IabHelper(context, resources.getString(R.string.rsa))
        iabHelper.startSetup {
            if (it.isSuccess) {
                Log.i("LOG", "setup finished")
                Toast.makeText(context,"ready",Toast.LENGTH_SHORT).show()
            }
        }
        viewModel = ViewModelProviders.of(this).get(CartViewModel::class.java)
        viewModel.getProduct().observe(this, Observer {
            recycler.adapter = CartAdapter(it) {
                productId = it
                iabHelper.launchPurchaseFlow(activity!!,it,1003,this)
            }
        })
        return view
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        if (requestCode == 1003) {
            iabHelper.handleActivityResult(requestCode, resultCode, data)
            Log.i("LOG", "on activity if")
        } else {
            Log.i("LOG", "on activity else")
            super.onActivityResult(requestCode, resultCode, data)
        }
    }

    override fun onDestroy() {
        super.onDestroy()
        iabHelper.dispose()

    }
    override fun onIabPurchaseFinished(result: IabResult?, info: Purchase?) {
        Log.i("LOG", "on purchase finished")
        iabHelper.consumeAsync(info,this)
    }
    override fun onConsumeFinished(purchase: Purchase?, result: IabResult?) {
        Toast.makeText(context,"consume success",Toast.LENGTH_SHORT).show()
        Log.i("LOG","consume finished")

    }
}

Answer 1

这通常发生在父级 activity 实现 onActivityResult() 并在没有 return 的情况下完全使用它。在片段的 activity 中，确保在执行它时 return onActivityResult。例如。在您的 activity 中，您可以按如下方式实现 onActivityResult：

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    if (requestCode == REQUEST_CODE) {
        //perform some actions
    } else {
        Log.i("LOG", "on activity else")
        //perform another actions
    }
  return super.onActivityResult(requestCode, resultCode, data) //this line is the most important
}

Answer 2

我认为您正在 IabHelper class 中调用 startActivityForResult。您应该调用 Fragment.startActivityForResult 而不是 Activity.startActivityForResult。要在 class IabHelper 中执行此操作，您必须实现两种方法，一种使用 activity 参数，另一种使用片段参数

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