Also, option 2 allows you to use another version of the getString() method that lets you specify a default value if there is no item corresponding to the key you provided. But if you're passing more than one item, using option 2 may save you some code. If you're only passing one item, then there's really no benefit to using one over the other. In Option 2, you first instantiate a Bundle, which you then use to retrieve the String. In option 1, you retrieve the String directly. String color = extras.getString('color', '#fafafa') String color = extras.getString('color') String color = intent.getStringExtra('color') Once you have the Intent that was used to launch an Activity, you can retrieve any extras that were bundled with it. Once NoResultActivity runs, the Intent that was used to launch it can be retrieved in the onCreate method by calling getIntent(). adding extended data to intent using key/value pair This example shows an Activity launching another activity called ' NoResultActivity', and bundling with the Intent a String object (variable name colorString) with the key ' color': Intent intent = new Intent(this, NoResultActivity.class) One of the great features of Intents is the ability to bundle data with an intent object, which is in turn delivered to the launched Activity. The OS will examine the included intent to determine which Activity on the device it should display.

After instantiating a new Intent, you simply call the startActivity() method, passing the intent as an argument.

In order to launch one activity from another, you must use an Intent object. We'll go over the others in detail in a future lesson. This lesson will discuss the first option.

Use the application's Shared Preferences.There are several ways to share data between Activites, each with their own pros and cons.

Android studio intent put extra object