Example of setting alarm clock and notification on Android

To briefly describe the content of this demo, first set a one-time alarm clock, get the AlarmManager, open a time dialog box, set the time of the alarm clock, send the broadcast as soon as the time comes, and then the broadcast receiver will jump to the new activity to play music. Then there is a repeated alarm clock, and finally a simple notice. The specific code is as follows:

Layout file (XML):

Broadcast receiver code:

Alarm clock playback activity Code:

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