如何在android中以编程方式跟踪应用程序使用时间？

Question

我想知道用户使用我的应用程序的时间。所以每当他打开我的应用程序时，我想知道时间，每当他关闭应用程序时，我想知道时间。当用户关闭应用程序时，我想将使用时间发送到服务器。我如何在 android 中跟踪使用时间？

Answer 1

我在下面提到的方式是一种非常有效的方式来获取用户在 android 中花费的总时间。实际上，我也使用这种方法来奖励我的用户花费的时间。首先，您需要一个自定义的ActivityLifecycleCallbacks，它负责在应用程序开始启动和停止时触发。您只需将ActivityLifecycleCallbacks注册到您的应用程序实例。这也将关心是否有任何用户暂停应用程序，因此您无需考虑它。自定义ActivityLifecycleCallbacks 类是 -

public class ApplicationTimeSpentTracker implements Application.ActivityLifecycleCallbacks {
    private int activityReferences = 0;
    private boolean isActivityChangingConfigurations = false;
    private long startingTime;
    private long stopTime;
   /**startingTime is the UNIX timestamp (though I increased readability by converting into millisecond to second) your app is being foregrounded to the user and stopTime is when it is being backgrounded (Paused)*/
    @Override
    public void onActivityCreated(Activity activity, Bundle bundle) {
    }

    @Override
    public void onActivityStarted(Activity activity) {
        if (++activityReferences == 1 && !isActivityChangingConfigurations) {
        
            // App enters foreground
            startingTime=System.currentTimeMillis()/1000; //This is the starting time when the app began to start
        }
    }

    @Override
    public void onActivityResumed(Activity activity) {
    }

    @Override
    public void onActivityPaused(Activity activity) {
    }

    @Override
    public void onActivityStopped(Activity activity) {
        isActivityChangingConfigurations = activity.isChangingConfigurations();
        if (--activityReferences == 0 && !isActivityChangingConfigurations) {
        
            // App enters background
            stopTime = System.currentTimeMillis() / 1000;//This is the ending time when the app is stopped 
            
            long totalSpentTime= stopTime-startTime; //This is the total spent time of the app in foreground. Here you can post the data of total spending time to the server.
        }
    }

    @Override
    public void onActivitySaveInstanceState(Activity activity, Bundle bundle) {
    }

    @Override
    public void onActivityDestroyed(Activity activity) {
    }
}

最后，您需要像这样在MainActivity中将回调注册到您的应用程序实例-

    activity.getApplication().registerActivityLifecycleCallbacks(new ApplicationTimeSpentTracker());

如果您需要详细信息，这是我的帖子