Google Android Compatibility Definition: Android 1.6 - Manual (Page 28)

ACTION_UMS_DISCONNECTED
Broadcast Action: The device has exited USB
Mass Storage mode.
ACTION_USER_PRESENT
Broadcast Action: Sent when the user is present
after device wakes up (e.g when the keyguard is
gone).
ACTION_WALLPAPER_CHANGED
Broadcast Action: The current system wallpaper
has changed.
ACTION_TIME_CHANGED Broadcast Action: The time was set.
ACTION_TIME_TICK Broadcast Action: The current time has changed.
ACTION_TIMEZONE_CHANGED Broadcast Action: The timezone has changed.
ACTION_BATTERY_CHANGED
Broadcast Action: The charging state, or charge
level of the battery has changed.
ACTION_BATTERY_LOW
Broadcast Action: Indicates low battery condition
on the device. This broadcast corresponds to the
"Low battery warning" system dialog.
ACTION_BATTERY_OKAY
Broadcast Action: Indicates the battery is now okay
after being low. This will be sent
after
ACTION_BATTERY_LOW once the battery
has gone back up to an okay state.
Network State
Intent Action Description
NETWORK_STATE_CHANGED_ACTION
Broadcast intent action indicating that the
state of Wi-Fi connectivity has changed.
RSSI_CHANGED_ACTION
Broadcast intent action indicating that the
RSSI (signal strength) has changed.
SUPPLICANT_STATE_CHANGED_ACTION
Broadcast intent action indicating that a
connection to the supplicant has been
established or lost.
WIFI_STATE_CHANGED_ACTION
Broadcast intent action indicating that Wi-Fi
has been enabled, disabled, enabling,
disabling, or unknown.
NETWORK_IDS_CHANGED_ACTION
The network IDs of the configured networks
could have changed.
ACTION_BACKGROUND_DATA_SETTING_CHANGED
Broadcast intent action indicating that the
setting for background data usage has
changed values.
CONNECTIVITY_ACTION
Broadcast intent indicating that a change in
network connectivity has occurred.
ACTION_AIRPLANE_MODE_CHANGED
Broadcast Action: The user has switched the
phone into or out of Airplane Mode.