应用程序内评论API是谷歌在2020年8月推出的一个期待已久的功能，就像苹果在2016年为iOS应用程序推出的功能一样。

有了这个API，用户不用离开就可以对应用程序进行审查和评分。谷歌建议开发人员不要强迫用户一直进行评分或审查，因为这个API在一段时间内为每个用户分配了应用程序的特定使用配额。开发人员当然不能在他们的任务中间用一个诱人的弹出窗口打断用户。

Java

In Application level (build.gradle)

       dependencies {
            // This dependency from the Google Maven repository.
            // include that repository in your project's build.gradle file.
            implementation 'com.google.android.play:core:1.9.0'
        }

 

boolean isGMSAvailable = false;
int result = GoogleApiAvailability.getInstance().isGooglePlayServicesAvailable(this);
isGMSAvailable = (com.google.android.gms.common.ConnectionResult.SUCCESS == result);
  if(isGMSAvailable)
  {
    ReviewManager manager = ReviewManagerFactory.create(this);
    Task<ReviewInfo> request = manager.requestReviewFlow();
    request.addOnCompleteListener(task -> {
      try {
        if (task.isSuccessful())
        {
           // getting ReviewInfo object
            ReviewInfo reviewInfo = task.getResult();
            Task<Void> flow = manager.launchReviewFlow(this, reviewInfo);
            flow.addOnCompleteListener(task2 -> {
                // 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.
                   });
        } else 
        {
            // There was some problem, continue regardless of the result
           // call old method for rating and user will land in Play Store App page
           Utils.rateOnPlayStore(this);       
        }
        } catch (Exception ex)
        {
            Log.e("review Ex", "review & rate: "+ ex);
                 }
                });
    }
    else
    {
       // if user has not installed Google play services in his/her device you land them to 
       // specific store e.g. Huawei AppGallery or Samsung Galaxy Store 
       Utils.rateOnOtherStore(this);
    }   

科特林

val manager = ReviewManagerFactory.create(context)
val request = manager.requestReviewFlow()
request.addOnCompleteListener { request ->
    if (request.isSuccessful) {
        // We got the ReviewInfo object
        val reviewInfo = request.result
    } else {
        // There was some problem, continue regardless of the result.
    }
}

//Launch the in-app review flow

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.
}

对于测试使用FakeReviewManager

//java
ReviewManager manager = new FakeReviewManager(this);

//Kotlin
val manager = FakeReviewManager(context)

import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.support.annotation.StringRes;
import android.widget.Toast;

public class PlayStoreLink {

public void checkForUpdate(Context context, int applicationId) 
{
    try {
        context.startActivity(new Intent(Intent.ACTION_VIEW,
                Uri.parse(context.getString(R.string.url_market_details)
                        + applicationId)));
    } catch (android.content.ActivityNotFoundException anfe) {
        try {
            context.startActivity(new Intent(Intent.ACTION_VIEW,
                    Uri.parse(context.getString(R.string.url_playstore_app)
                            + applicationId)));
        } catch (Exception e) {
            Toast.makeText(context,
                    R.string.install_google_play_store,
                    Toast.LENGTH_SHORT).show();
        }
    }
}

public void moreApps(Context context, @StringRes int devName) {
    try {
        context.startActivity(new Intent(Intent.ACTION_VIEW,
                Uri.parse(context.getString(R.string.url_market_search_app)
                        + context.getString(devName))));
    } catch (android.content.ActivityNotFoundException anfe) {
        try {
            context.startActivity(new Intent(Intent.ACTION_VIEW,
                    Uri.parse(context.getString(R.string.url_playstore_search_app)
                            + context.getString(devName))));
        } catch (Exception e) {
            Toast.makeText(context,
                    R.string.install_google_play_store,
                    Toast.LENGTH_SHORT).show();
        }
    }
}

public void rateApp(Context context, int applicationId) {
    try {
        Uri uri = Uri.parse(context.getString(R.string.url_market_details)
                + applicationId);
        Intent intent = new Intent(Intent.ACTION_VIEW, uri);
        int flags = Intent.FLAG_ACTIVITY_NO_HISTORY | Intent.FLAG_ACTIVITY_MULTIPLE_TASK;
        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT_WATCH)
            flags |= Intent.FLAG_ACTIVITY_NEW_DOCUMENT;
        else
            flags |= Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET;
        intent.addFlags(flags);
        context.startActivity(intent);
    } catch (ActivityNotFoundException e) {
        checkForUpdate(context, applicationId);
    }
}
}

<string name="install_google_play_store" translatable="false">Please install google play store and then try again.</string>
<string name="url_market_details" translatable="false">market://details?id=</string>
<string name="url_playstore_app" translatable="false">https://play.google.com/store/apps/details?id=</string>
<string name="url_market_search_app" translatable="false">market://search?q=pub:</string>
<string name="url_playstore_search_app" translatable="false">http://play.google.com/store/search?q=pub:</string>
<string name="app_link" translatable="false">https://play.google.com/store/apps/details?id=</string>

devName是Play Store上开发者帐户的名称

你可以使用这个简单的代码来评估你的应用程序在你的活动。

try {
    Uri uri = Uri.parse("market://details?id=" + getPackageName());
    Intent goToMarket = new Intent(Intent.ACTION_VIEW, uri);
    startActivity(goToMarket);
} catch (ActivityNotFoundException e) {
    startActivity(new Intent(Intent.ACTION_VIEW,
    Uri.parse("http://play.google.com/store/apps/details?id=" + getPackageName())));
}

从现在开始，你可以使用谷歌的应用评级功能。

这里是Kotlin/Java集成的官方指南

谷歌Play In-App Review API允许您提示用户提交Play Store评级和评论，而无需离开您的应用程序或游戏。 通常，应用内部审查流程(见图1)可以在 在你的应用程序的用户旅程的任何时间 用户可以使用1到5星系统对你的应用进行评级 添加可选注释。一旦提交，审查将被发送到 播放商店和最终显示。

前提是你同时在谷歌Play Store和Amazon Appstore发布应用。我还处理过用户(尤其是中国用户)既没有应用商店又没有浏览器的情况。

public void goToMyApp(boolean googlePlay) {//true if Google Play, false if Amazone Store
    try {
       startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse((googlePlay ? "market://details?id=" : "amzn://apps/android?p=") +getPackageName())));
    } catch (ActivityNotFoundException e1) {
        try {
            startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse((googlePlay ? "http://play.google.com/store/apps/details?id=" : "http://www.amazon.com/gp/mas/dl/android?p=") +getPackageName())));
        } catch (ActivityNotFoundException e2) {
            Toast.makeText(this, "You don't have any app that can open this link", Toast.LENGTH_SHORT).show();
        }
    }
}

我使用以下方法结合这个和这个答案，而不使用基于异常的编程，也支持api 21之前的意图标志。

@SuppressWarnings("deprecation")
private Intent getRateIntent()
{
  String url        = isMarketAppInstalled() ? "market://details" : "https://play.google.com/store/apps/details";
  Intent rateIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(String.format("%s?id=%s", url, getPackageName())));
  int intentFlags   = Intent.FLAG_ACTIVITY_NO_HISTORY | Intent.FLAG_ACTIVITY_MULTIPLE_TASK;
  intentFlags      |= Build.VERSION.SDK_INT >= 21 ? Intent.FLAG_ACTIVITY_NEW_DOCUMENT : Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET;
  rateIntent.addFlags(intentFlags);
  return rateIntent;
}

private boolean isMarketAppInstalled()
{
  Intent marketIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("market://search?q=anyText"));
  return getPackageManager().queryIntentActivities(marketIntent, 0).size() > 0;
}


// use
startActivity(getRateIntent());

由于意图标志FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET已从API 21弃用，我在getRateIntent方法上使用@SuppressWarnings(“弃用”)标签，因为我的应用程序目标SDK低于API 21。

我还尝试了他们网站上建议的谷歌官方方式(2019年12月6日)。据我所知，如果没有安装Play Store应用程序，它就无法处理这种情况:

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse(
    "https://play.google.com/store/apps/details?id=com.example.android"));
intent.setPackage("com.android.vending");
startActivity(intent);