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5. Battery
To know the battery level, you need a BroadcastReceiver to be informed of any change in its condition.
The BroadcastReceiver is an object that acts as an "inbox" for messages sent by the operating system. Each time this listening object receives a message, the system calls its onReceive() method.
BroadcastReceiver batteryReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
//TO DO
}
};
We create a filter on the messages received so as to keep only the battery level change notification messages.
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Bibliography
Websites
Android developers https://developer.android.com/ (page consulted on June 6, 2021). Reference site for programming on the Android platform. This site presents an extensive reference database and the tools needed for programming.
Events
Google I/O https://events.google.com/io (page consulted on June 6, 2021): annual two-day conference organized by Google at the Moscone Center in San Francisco, California. Its purpose is to announce developments in the many services and technologies offered by Google.
Directory
Google (Pixel phone) https://store.google.com/fr/category/phones
Samsung (Android phones and tablets) http://www.samsung.com
Sony (Android phones and tablets) https://www.sony.fr
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