CODEWITHSUNDEEP
android
Xazen
Xazen

Reputation: 822

How to differentiate between an Update and a new installation

I am programming an update for an App. A pop-up will appear at the beginning when the app is started for the first time. But it will just happen if the Update was installed as an Update.

Whoever install the app as a new installation should not see the pop-up.

The previous version of the App can't commit any SharedPreferences XML.

If you dont understand the situation, ask for further details, please.

Upvotes: 0

Views: 805

Answers (4)

Christopher Perry
Christopher Perry

Reputation: 39255

Creating a BroadcastReceiver that listens to the ACTION_PACKAGE_REPLACED Intent will do the job.

You just put this in your manifest

<receiver android:name=".OnUpgradeReceiver">
  <intent-filter>
    <action android:name="android.intent.action.PACKAGE_REPLACED" />
    <data android:scheme="package" android:path="your.app.package" />
  </intent-filter>
</receiver>

Upvotes: 0

Kevin Gaudin
Kevin Gaudin

Reputation: 9945

In the onCreate() of your launcher activity, check if a file with a name of your choice exists, like "INSTALLED", for example.

  • if it does not exist, this is a fresh install, don't display the popup and create the file
  • if the file already exists, this is an update, display your popup

A safer (multi-activity safe) approach would be to place this test in the onCreate() of your application and place the result of the test in a static variable in your application. This way, whichever activity is launched via any intent (launcher or not), you can retrieve the static field from the application object.

Upvotes: 1

Bill Mote
Bill Mote

Reputation: 12823

I am doing that very thing and I've also included some Google Analytics events in the mix so I track upgrades vs. new installs and can see them over time ;)

// Display Recent Changes on 1st use of new version
if (!appPrefs.getAppVer().equals(getAppVerName())) {
 if (appPrefs.getAppVer().equals("")) {
         tracker.trackEvent("Application", "Install", getAppVerName(), 1);
      } else if (!appPrefs.getAppVer().equals("N/A")) {
         tracker.trackEvent("Application", "Upgrade", appPrefs.getAppVer().toString()+"->"+getAppVerName(), 1);
 }
 // display recent changes dialog
 tracker.trackPageView("/RecentChanges");
 appPrefs.saveAppVer(getAppVerName());
 appPrefs.saveAcceptedUsageAggrement(false);
}

// Display Usage Agreement on 1st use of new version
if (!appPrefs.getAcceptedUsageAggrement()) {
 tracker.trackPageView("/UsageAgreement");
 // display usage agreement dialog
 // negative button actions here
        appPrefs.saveAppVer("N/A");
 // positive button actions here
        appPrefs.saveAcceptedUsageAggrement(true);
}

More details at my blog: http://www.aydabtudev.com/2011/03/google-analytics-tricks-for-android.html

Upvotes: 1

Vino
Vino

Reputation: 1544

You can register for a broadcast by the system. On update of an app, the system sends the intent ACTION_PACKAGE_REPLACED.

Upvotes: 0

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