在Android上获取应用程序安装日期 _程序安装

古之立大事者，不惟有超世之才，亦必有坚忍不拔之志。这篇文章主要讲述在Android上获取应用程序安装日期相关的知识，希望能为你提供帮助。
是否有办法在android设备上找到“安装应用程序的日期”。
广泛搜索，但无法找到相关答案。
通过PackageManager documentation / Code无法找到有关安装应用程序的日期的任何信息。
答案或者这个（API等级9以上！）：

long installed = context .getPackageManager() .getPackageInfo(context.getPackag??eName(), 0) .firstInstallTime ;

另一答案使用此代码：

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

另一答案尝试其中之一

/** * The time at which the app was first installed. Units are as per currentTimeMillis(). * @param context * @return */ public static long getAppFirstInstallTime(Context context){ PackageInfo packageInfo; try { if(Build.VERSION.SDK_INT> 8/*Build.VERSION_CODES.FROYO*/ ){ packageInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0); return packageInfo.firstInstallTime; }else{ //firstinstalltime unsupported return last update time not first install time ApplicationInfo appInfo = context.getPackageManager().getApplicationInfo(context.getPackageName(), 0); String sAppFile = appInfo.sourceDir; return new File(sAppFile).lastModified(); } } catch (NameNotFoundException e) { //should never happen return 0; } }

另一答案 First Time It Was Installed

activity.getPackageManager().getPackageInfo( activity.getPackageName(), 0 ).firstInstallTime;

Last Time It Was Updated

activity.getPackageManager().getPackageInfo( activity.getPackageName(), 0 ).lastUpdateTime;

另一答案此方法以字符串格式返回安装日期，如12/25/2016 10:38:02：

private String getInstallDate() { // get app installation datePackageManager packageManager =getActivity().getPackageManager(); long installTimeInMilliseconds; // install time is conveniently provided in millisecondsDate installDate = null; String installDateString = null; try { PackageInfo packageInfo = packageManager.getPackageInfo(getActivity().getPackageName(), 0); installTimeInMilliseconds = packageInfo.firstInstallTime; installDateString= MiscUtilities.getDate(installTimeInMilliseconds, "MM/dd/yyyy hh:mm:ss"); } catch (PackageManager.NameNotFoundException e) { // an error occurred, so display the Unix epoch installDate = new Date(0); installDateString = installDate.toString(); }return installDateString; }

【在Android上获取应用程序安装日期】MiscUtilities

/** * Return date in specified format. * * @param milliSeconds Date in milliseconds * @param dateFormatDate format * @return String representing date in specified format * < p> * Date myDate = MiscUtilities.getDate(82233213123L, "dd/MM/yyyy hh:mm:ss.SSS"); */ public static String getDate(long milliSeconds, String dateFormat) { // Create a DateFormatter object for displaying date in specified format. SimpleDateFormat formatter = new SimpleDateFormat(dateFormat); // Create a calendar object that will convert the date and time value in milliseconds to date. Calendar calendar = Calendar.getInstance(); calendar.setTimeInMillis(milliSeconds); return formatter.format(calendar.getTime()); }