How to get app install time from android

i t开发者_运维百科ry some method,but not success,help me.

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

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In API level 9 (Gingerbread) and above, there's the PackageInfo.firstInstallTime field, holding milliseconds since the epoch:

packageManager.getPackageInfo(packageName, 0).firstInstallTime;

I have the following code to use it if available, and fall back to the apk modification time:

// return install time from package manager, or apk file modification time,
// or null if not found
public Date getInstallTime(
    PackageManager packageManager, String packageName) {
  return firstNonNull(
    installTimeFromPackageManager(packageManager, packageName),
    apkUpdateTime(packageManager, packageName));
}

private Date apkUpdateTime(
    PackageManager packageManager, String packageName) {
  try {
    ApplicationInfo info = packageManager.getApplicationInfo(packageName, 0);
    File apkFile = new File(info.sourceDir);
    return apkFile.exists() ? new Date(apkFile.lastModified()) : null;
  } catch (NameNotFoundException e) {
    return null; // package not found
  }
}

private Date installTimeFromPackageManager(
    PackageManager packageManager, String packageName) {
  // API level 9 and above have the "firstInstallTime" field.
  // Check for it with reflection and return if present. 
  try {
    PackageInfo info = packageManager.getPackageInfo(packageName, 0);
    Field field = PackageInfo.class.getField("firstInstallTime");
    long timestamp = field.getLong(info);
    return new Date(timestamp);
  } catch (NameNotFoundException e) {        
    return null; // package not found
  } catch (IllegalAccessException e) {
  } catch (NoSuchFieldException e) {
  } catch (IllegalArgumentException e) {
  } catch (SecurityException e) {
  }
  // field wasn't found
  return null;
}

private Date firstNonNull(Date... dates) {
  for (Date date : dates)
    if (date != null)
      return date;
  return null;
}

---

PackageInfo.firstInstallTime gives you the install time in "Unix time" (the time in milliseconds since "the epoch", i.e. January 1, 1970 00:00:00 UTC). You may use java.util.Date or java.text.DateFormat in order to format this time.

private static final String TAG = "MyActivity";

...
packageName = ...
...

try {
    PackageInfo packageInfo = pm.getPackageInfo(packageName, PackageManager.GET_PERMISSIONS);

    Date installTime = new Date( packageInfo.firstInstallTime );
    Log.d(TAG, "Installed: " + installTime.toString());

    Date updateTime = new Date( packageInfo.lastUpdateTime );
    Log.d(TAG, "Updated: " + updateTime.toString());
}
catch ( PackageManager.NameNotFoundException e ) {
    e.printStackTrace();
}

You can also change the date format with java.text.SimpleDateFormat.

SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

String installTime = dateFormat.format( new Date( packageInfo.firstInstallTime ) );
Log.d(TAG, "Installed: " + installTime);

String updateTime = dateFormat.format( new Date( packageInfo.lastUpdateTime ) );
Log.d(TAG, "Updated: " + updateTime);

---

First install time as Kotlin extension:

fun Context.getFirstInstallDate(): Date? =
    try {
        val time: Long = packageManager.getPackageInfo(packageName, 0).firstInstallTime
        Date(time)
    } catch (e: Exception) {
        e.printStackTrace()
        null
    }

---

Answer from 2022, and it's working for me.

PackageManager pm = context.getPackageManager();
PackageInfo pi = pm.getPackageInfo(context.getPackageName(), 0);
long firstInstallTime = pi.firstInstallTime;
long lastUpdateTime = pi.lastUpdateTime;