在Android上獲取應用程序安裝日期

Question

有沒有辦法找到Android設備上的「安裝應用程序的日期」。

已經廣泛搜索，但無法找到相關答案。

通過PackageManager文檔/代碼安裝應用程序時，無法找到關於日期的任何信息。

非常感謝。 Mahim。

Answer 1

或者這一個：

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

Answer 2

使用此代碼：（！API等級9向上）

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

Answer 3

嘗試這些

/** 
* 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; 
    } 
} 

Answer 4

這個方法返回一個以字符串格式安裝的日期，如12/25/2016 10:38:02：

private String getInstallDate() { 
     // get app installation date 

     PackageManager packageManager = getActivity().getPackageManager(); 
     long installTimeInMilliseconds; // install time is conveniently provided in milliseconds 

     Date 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; 
    }