An analysis of how Android improves service priority _android

The examples in this article describe how Android improves service priority. Share to everyone for your reference, specific as follows:

The Android system has its own set of methods for memory management, in order to ensure the orderly and stable delivery of the system, the system will be automatically allocated, the control program memory use. When the system feels the current resources are very limited, in order to ensure that some high priority programs can run, it will kill some of the programs or services he does not think important to free memory. This ensures that programs that are really useful to users are still running. If your Service meets this situation, you'll probably get killed first. But if you increase the service priority so that he can stay a little while, we can use Setforeground (true) to set the service priority.

Why the foreground? The service that is started by default is marked as background, and the currently running activity is typically marked as foreground, which means that you set up a foreground for the service so that he has the same priority as the running activity. A certain improvement. When this doesn't guarantee that your Service will never be killed, it just increases his priority.

Starting with Android 1.5, a service that has been started can call Startforeground (int, Notification) to place the service in a foreground state, calling Stopforeground ( Boolean) to place the service in the background state.

We will call Startforeground (int, Notification) to pass in the parameter Notification, which will display the foreground service in progress in the status bar. The background service is not displayed in the status bar.

In Android 1.0, put a service in the foreground state:

Setforeground (true);
Mnm.notify (ID, notification);

To place a service in the background state:

Mnm.cancel (ID);
Setforeground (FALSE);

By contrast, calling Setforeground (Boolean) in the 1.0 API simply changes the state of the service, and the user is not aware of it. The new API enforces notification and changes to the service state, and the foreground service is displayed in the status bar, and the background service does not.

Remote Service Controller & Binding

Call service across processes. Do not study for the time being.

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I hope this article will help you with the Android program.