Some notes on Android Service

Binding service:

Used to indirectly invoke the method inside the service. If the caller's activity is destroyed, the service is destroyed and the service is destroyed.

Open service:

You cannot invoke methods inside the service. If the caller's activity exits, the service will also run in the background for a long time

Life cycle

① separate call StartService ()-OnCreate, StopService ()-OnDestroy

② separate call Bindservice ()-onCreate ()-Onbind, Unbindservice ()-Onunbind-ondestroy

The service can only be unbound once and cannot be unbound multiple times.

Mixed calls

Requirements: To ensure that the service is running in the background for a long time, but also want to call the service inside the method.

Tip: 1. Start the service first, 2. Bind Service