如何在Android设备中使用googlePlay检查已安装的应用程序

Question

如何检查是否已从Google Play商店（单击“安装”按钮）或下载的.apk文件安装了任何android应用程序并将其安装在设备中？

Answer 1

When installed from Google Play, you will receive a com.android.vending.INSTALL_REFERRER broadcast during the install process. Simply create a broadcast receiver for this, and have a boolean value in your SharedPreferences along the lines of fromGooglePlay , which you can set to true in the receiver.

However, I do not think you can have similar receivers for other app stores, like Amazon's.

Additionally, this will not work on Android 3.1 and above, as apps that have not been launched at least once are not eligible to receive broadcasts.

However, you can try an alternate solution:

In you app, have a constant boolean somewhere, something like GOOGLE_PLAY_BUILD . When building an apk for Google Play, set this to true , and when building an apk for manual distribution, set this to false . Then simply check it's value at runtime, and act accordingly.

Also, there is a getInstallerPackageName() method in PackageManager which can be used for this purpose. However, this value is not reliable and may be tampered with.