Android：检查某个应用程序是通过商店还是手动安装的？

Question

主题标题描述了我的问题。在 Android 上，我可以通过 Google Play 商店或手动检查/验证某处/以某种方式安装应用程序吗？手动是指从网上下载并安装，从 sd 卡等安装。

当您在网络上使用相同帐户访问 google play 时，Google play 也可以查看是否安装了应用程序。所以它在某处注册。例如，如果应用是通过 google play 安装的，是否可以“询问”google play？

---

编辑：根据 Marcin Orlowski 的回答，另请参阅下面的解决方案。

Answer 1

PackageManager 中有getInstallerPackageName() 方法。对于侧面加载的 APK，它不会返回任何名称。

Answer 2

好的，Marcin Orlowski 得到了正确的答案并用它设计了这个。问题是，当您从 IDE (Android Studio) 运行应用程序时使用此检测方法时，该功能检测到它不是通过 Google Play 安装的。为了避免这种行为，您必须将 buildtype 'debug' 添加到 build.gradle 文件中。例如：

debug {
    applicationIdSuffix ".debug"
    versionNameSuffix ".debug"
}

代码：

........

int playStoreInstalled = -1;

........

public boolean isDebugVersion()
{
// NOTICE: To make this functional, specify a debug buildType in the build.gradle file 
        try {
             // Get the applicationId specified in the build.gradle file
            String sAppId = this.mContext.getPackageName();
            return sAppId.endsWith(".debug");
        } catch( Exception e ) {}

        return true;
}

public String getInstallerPackageName( String sPackageName )
{

    String sInstallerName = "";
    try
    {
        if( sPackageName == null || sPackageName.length() == 0 )
        { sPackageName = this.mContext.getPackageName(); }
        PackageManager packageManager = this.activity.getApplication().getPackageManager();
        sInstallerName = packageManager.getInstallerPackageName(sPackageName);
    } catch( Exception e ) {}

    return sInstallerName;
}

public boolean isPlayStoreInstalled()
        {
             // Check it only once, is the play store installed?
             // NOTICE: At first check this.playStoreInstalled is initialized with -1
            if( this.playStoreInstalled < 0 )
            { 
                // Because playstore it's name has changed, we must check for both
                String sPlayStorePackageNameOld = "com.google.market";
                String sPlayStorePackageNameNew = "com.android.vending";
                String sPackageName = "";

                PackageManager packageManager = this.activity.getApplication().getPackageManager();
                List<PackageInfo> packages = packageManager.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES);
                for( PackageInfo packageInfo : packages) 
                {
                    sPackageName = packageInfo.packageName;
                    //this.debug( sPackageName );
                    if(sPackageName.equals(sPlayStorePackageNameOld) || sPackageName.equals(sPlayStorePackageNameNew)) 
                    {
                        this.playStoreInstalled = 1;
                        break;
                    }   
                }
            }
            return ( this.playStoreInstalled > 0 );
        }

        public boolean isAppPlayStoreGenuine( String sPackageName )
        {
             // If there is no playstore available, it is impossible that the app
             // is genuine installed via the playstore.
            if( !this.isPlayStoreInstalled())
             { return false; }

            String sInstallerName =  this.getInstallerPackageName( sPackageName );
            return (sInstallerName != null && sInstallerName.length() > 0 );
        }

        public boolean isAppPlayStoreGenuine() // Check current app is properly/official genuine installed
        {
            return ( this.isDebugVersion() || this.isAppPlayStoreGenuine(null) );
        }

您可以检查当前应用是否已正确安装，也可以指定另一个应用的 appId。如果没有安装 Google Play，则永远无法通过 Google Play 正确安装。

例如：

if( !this.isAppPlayStoreGenuine())
{
  // 1. Show message before shutdown
  // 2. Shutdown app
}

// or:

if( !this.isAppPlayStoreGenuine('com.mycompany.myapp'))
{
  // 1. Show message
  // 2. Do what you want to do
}

希望它对某人有所帮助。