Android Service OnCreate when the UI thread is using Service, when to use thread

Han Mengfei sha Han Yafei [email protected] yue31313 Han_meng_fei_sha

Each method of the service's life cycle is in the main thread. The operation here can cause the main thread to block.

These methods, as well as callback methods, are oncreate those callback methods. Note the difference between the callback method and the general method. Because many people are difficult to understand the literal term of the callback. I don't know what the hell it is.

Service as one of the four components of Android, you may use it often. When it comes to it, we casually say that it will perform long tasks in the background, but is that really the right statement?

Although the service is executed in the background, it is still running in the main thread.

Let's not associate the background with the sub-threads, which is two completely different concepts. The background of Android is that it runs completely independent of the UI. Even if the activity is destroyed, or the program is closed, the service can continue to run as long as the process is in progress.

When to use service, when to use thread

1. If you only need to perform background tasks and do not need to interact with the user interface, you can use the service at this time;
2. If you need to perform tasks on the main thread, and when you need to interact with the user interface, you can choose to create a new thread instead of a service.

Android Service OnCreate when the UI thread is using Service, when to use thread