我想在我的应用程序ABCD上验证。我在我的应用程序中添加了功能,将其发送到其他设备。我可以通过蓝牙将我安装的应用程序ABCD从我的设备发送到其他设备。 现在,我想创建支票。
if(isFromPlayStore){
// always valid downloaded from play store
}else{
// trial version expired in 30 day
}
答案 0 :(得分:1)
请查看here。这可能有助于您获得一些想法。
答案 1 :(得分:0)
普通用户下载应用程序有两种最常用的方式。
" com.android.vending" 是Google Play商店,
" com.amazon.venezia" 是亚马逊应用商店,
" null" 当它被侧载时(未知来源)
要检查此项,请使用以下代码:
final PackageManager packageManager = getPackageManager();
try {
final ApplicationInfo applicationInfo = packageManager.getApplicationInfo(getPackageName(), 0);
if ("com.android.vending".equals(packageManager.getInstallerPackageName(applicationInfo.packageName))) {
// App was installed by Play Store
} else if ("com.amazon.venezia".equals(packageManager.getInstallerPackageName(applicationInfo.packageName))) {
// App was installed by Amazon Appstore
} else {
// App was installed from somewhere else
}
} catch (final NameNotFoundException e) {
e.printStackTrace();
}