The system then determines the best component or components to use, even if it is in a separate application or native to the OS. If instead the requirements of an application can be specified by intent filters, an implicit intent can be used. To activate a particular component of the application, an intent naming the component explicitly is used. When the secondary activity ends, the main activity is brought to the foreground and resumed. This causes the main activity to pause while the secondary activity is active.

This activity can launch another activity, usually after a trigger event. The main activity, as defined in the AndroidManifest XML file, is started when the application is started. A notepad can have three activities: view a list of notes, read a selected note, and edit a selected or new note. For example, a game can have two activities: a high scores screen and a game screen. Hence, there is often a need to deal with multiple activities. Public class Person implements Serializable Step 5: Modify AndroidManifest.Android Developer's Cookbook, The: Building Applications with the Android SDK: Building Applications with the Android SDKĮven the simplest applications have more than one functionality. Step 2: Create Person.java which implement serializable package Due to this, the Serialization process is slow in comparison to Parcelable. This helps identify the Java objects member and behavior, but also ends up creating a lot of garbage objects. In Serialization, a marshaling operation is performed on a Java Virtual Machine (JVM) using the Java reflection API. Serialization is a marker interface, which implies the user cannot marshal the data according to their requirements. The performance of Parcelable over Serialization dramatically improves (around two times faster), because of this custom implementation. In Parcelable, developers write custom code for marshaling and unmarshaling so it creates less garbage objects in comparison to Serialization. Parcelable and Serialization are used for marshaling and unmarshaling Java objects. In this post, I will show you an simple example of how to pass object by intent in Android application.

Android studio intent import