where is the component tree in android studio 2.2.3

To know more about Content Providers in android check this Android Content Provider. For example, android provides a Content Provider ( ContactsContract.Data) to manage contacts information, by using proper permissions any app can query the content provider to perform read and write operations on contacts information. The Content Providers can share the app data that stores in the file system, SQLite database, on the web or any other storage location that our app can access.īy using Content Providers, other apps can query or modify the data of our app based on the permissions provided by content provider. In android, Content Providers are useful to exchange the data between the apps based on the requests. To know more about Broadcast Receivers in android check this Android Broadcast Receivers. Generally, we use Intents to deliver broadcast events to other apps and Broadcast Receivers use status bar notifications to let the user know that broadcast event occurs. The apps can also initiate broadcasts to let other apps know that required data available in a device to use it. In android, Broadcast Receiver is a component that will allow a system to deliver events to the app like sending a low battery message to the app.

To know more about Services in android check this Android Services. We have two types of services available in android, those are

For Service, we don’t have any user interface and it will run the apps in background like play music in background when the user in different app. In android, Service is a component that keeps an app running in the background to perform long-running operations based on our requirements. To know more about Intents in android check this Android Intents. There are two types of intents available in android, those are In android, intents are mainly used to perform the following things. In android, Intent is a messaging object which is used to request an action from another component. To know more about Activities in android check Android Activities. All these activities in the contact app are independent of each other but will work together to provide a better user experience. In android, Activity represents a single screen with a user interface (UI) and it will acts an entry point for the user’s to interact with app.įor example, a contacts app that is having multiple activities like showing a list of contacts, add a new contact, and another activity to search for the contacts. This is how we can define an android application components in AndroidManiFest.xml file.

Where is the component tree in android studio 2.2.3