Android development Alarm Clock to achieve the carding

Alarm Clock data storage: SQLite database Storage Clockdatabasehelper.java

UI display: The main interface shows the existing alarm (ListView), the ListView can turn off the alarm, the ListView click into the corresponding alarm editing interface, add alarm (button)

Add interface Time (Timepicker), repeat (TextView), ringtone (TextView), label (TextView), OK (button)

Edit Interface Basic Ibid., Delete (button)

Repeat (TextView) Click Trigger Alertdialog, Multi box

Ringtones (TextView) Click on Alertdialog, Radio box

Alarm Clock implementation: Service realizes warning ringing via Alarmmanage

The existing method is to detect if every minute corresponds to the current alarm, the efficiency is too low time instability

Idea: Calculate the number of milliseconds for the next bell when the alarm is created, calculate again after the bell, and find out the current minimum value

Android development Alarm Clock to achieve the carding