It responds to system-wide broadcast announcements. It used to display a persistent icon in the status bar of the device, vibrate, play a sound, flashlights, etc. to indicate to the user that something significant has happened in the background. System Generated Events The following table lists a few important system events. android.intent.action.BATTERY_CHANGED - Sticky broadcast containing the charging state, level, and other information about the battery. android.intent.action.BATTERY_LOW - Indicates low battery condition on the device. android.intent.action.BATTERY_OKAY - Indicates the battery is now okay after being low. android.intent.action.DATE_CHANGED - The date has changed. android.intent.action.REBOOT - Have the device reboot. android.intent.action.BOOT_COMPLETED - This is broadcast once after the system has finished booting. android.intent.action.BUG_REPORT - Show activity for reporting a bug. android.intent.action.CALL - Perform a...
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