Android：Google三方库之集成应用内评价详细步骤

1、集成依赖

    implementation("com.google.android.play:review:2.0.1")
    implementation("com.google.android.play:review-ktx:2.0.1")

2、创建 ReviewManager

请遵循有关何时请求应用内评价的指南，以确定在应用的用户流的哪些阶段适合提示用户进行评价（例如，当用户在游戏中完成某个关卡时）。当您的应用达到其中一个阶段时，请使用 ReviewManager 实例创建请求任务。如果请求成功，该 API 将返回启动应用内评价流程所需的 ReviewInfo 对象。

val request = manager.requestReviewFlow()
request.addOnCompleteListener { task ->
    if (task.isSuccessful) {
        // We got the ReviewInfo object
        val reviewInfo = task.result
    } else {
        // There was some problem, log or handle the error code.
        @ReviewErrorCode val reviewErrorCode = (task.getException() as ReviewException).errorCode
    }
}

3、启动应用内评价流程 

使用 ReviewInfo 实例启动应用内评价流程。等到用户完成应用内评价流程后，再继续执行应用的正常用户流（例如进入下一关）。

val flow = manager.launchReviewFlow(activity, reviewInfo)
flow.addOnCompleteListener { _ ->
    // The flow has finished. The API does not indicate whether the user
    // reviewed or not, or even whether the review dialog was shown. Thus, no
    // matter the result, we continue our app flow.
}

步骤整合 

// 初始化 ReviewManager 实例
private val reviewManager: ReviewManager by lazy {
    ReviewManagerFactory.create(context)
}

// 请求评价流程的函数
private fun requestReviewFlow() {
    GlobalScope.launch(Dispatchers.Default) {
        val request: Task = reviewManager.requestReviewFlow()
        request.addOnCompleteListener { task ->
            if (task.isSuccessful) {
                // 获取到评价流程，可以继续处理
                val reviewInfo: ReviewInfo = task.result
                showReviewPrompt(reviewInfo)
            } else {
                // 请求评价流程失败，处理错误
                val exception: Exception? = task.exception
                // ...
            }
        }
    }
}