Get App Installed Date on Android

API Level 9 이전 버전

[code lang="java"] PackageManager pm = context.getPackageManager();
ApplicationInfo appInfo = pm.getApplicationInfo("app.package.name", 0);
String appFile = appInfo.sourceDir;
long installed = new File(appFile).lastModified();
[/code]

API Level 9 이상

[code lang="java"] long installed = context.getPackageManager().getPackageInfo("package.name", 0).firstInstallTime;
[/code]

Reference

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