When Do Onrestart Method Get Called In Android?

While we are having onStart method, what is the purpose of onRestart method? @Override protected void onStart() { super.onStart(); } @Override protected voi

Solution 1:

Here is the activity lifecycle there is your onStart() and onRestart() methods with explanations

more info here

Solution 2:

One case of onRestart() being called is when user presses home button and comes to launcher screen. In this case, activity is not destroyed and pause/stop events are fired. When user opens your app again, onRestart() for that activity is called before onStart(). You can find example here.

Solution 3:

The onRestart() method will be called whenever the Activity comes back from the invisible state. Suppose, we pressed the home button of the device and coming back, this onRestart() will be invoked. For more info about this, please go through the documentation

Solution 4:

You can read all about the Activity's lifecycle on Android developers: http://developer.android.com/reference/android/app/Activity.html#onRestart()

Taken directly from there:

Called after onStop() when the current activity is being re-displayed to the user (the user has navigated back to it). It will be followed by onStart() and then onResume().

For activities that are using raw Cursor objects (instead of creating them through managedQuery(android.net.Uri, String[], String, String[], String), this is usually the place where the cursor should be requeried (because you had deactivated it in onStop().

Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.

Solution 5:

According to this

Note: Because the system retains your Activity instance in system memory when it is stopped, it's possible that you don't need to implement the onStop() and onRestart() (or even onStart() methods at all. For most activities that are relatively simple, the activity will stop and restart just fine and you might only need to use onPause() to pause ongoing actions and disconnect from system resources.

Called after onStop() when the current activity is being re-displayed to the user (the user has navigated back to it). It will be followed by onStart() and then onResume().

For activities that are using raw Cursor objects (instead of creating them through managedQuery(android.net.Uri, String[], String, String[], String), this is usually the place where the cursor should be requeried (because you had deactivated it in onStop().