Android implements service to download files, and notification displays an example of download progress

Put a GIF first.. Final effect if:

It mainly demonstrates that Android downloads files from the server, calls notification to display the download progress, and after downloading, clicking the notification will jump to the interface of installing APK. The demonstration is to use the real URL in the real network environment to see the code:

The mainactivity code is very simple, that is, start a service:

In downloadservice, there are key codes in onstartcommand method. Call the "notify_progress" method of notifyutil tool class to display a notification and start downloading APK files at the same time. The downloadservice code is as follows:

When the "notify_progress" method is called, the file has been downloaded. What is the downloaded code? As follows:

Afinal.jar is used here

This jar has encapsulated the downloaded tool class, and we can use it directly. After the download is successful, it will be called back to the downloadservice through the downloadlistener interface. The final running effect is the same as that of the GIF dynamic diagram at the top.

Project download address: click download

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