public
class
PhoneStateListener
extends Object
| java.lang.Object | |
| ↳ | android.telephony.PhoneStateListener |
A listener class for monitoring changes in specific telephony states on the device, including service state, signal strength, message waiting indicator (voicemail), and others.
Override the methods for the state that you wish to receive updates for, and
pass your PhoneStateListener object, along with bitwise-or of the LISTEN_
flags to TelephonyManager.listen().
Note that access to some telephony information is permission-protected. Your application won't receive updates for protected information unless it has the appropriate permissions declared in its manifest file. Where permissions apply, they are noted in the appropriate LISTEN_ flags.
Constants | |
|---|---|
int |
LISTEN_CALL_FORWARDING_INDICATOR
Listen for changes to the call-forwarding indicator. |
int |
LISTEN_CALL_STATE
Listen for changes to the device call state. |
int |
LISTEN_CELL_INFO
Listen for changes to observed cell info. |
int |
LISTEN_CELL_LOCATION
Listen for changes to the device's cell location. Note that this will result in frequent callbacks to the listener. |
int |
LISTEN_DATA_ACTIVITY
Listen for changes to the direction of data traffic on the data connection (cellular). |
int |
LISTEN_DATA_CONNECTION_STATE
Listen for changes to the data connection state (cellular). |
int |
LISTEN_MESSAGE_WAITING_INDICATOR
Listen for changes to the message-waiting indicator. |
int |
LISTEN_NONE
Stop listening for updates. |
int |
LISTEN_SERVICE_STATE
Listen for changes to the network service state (cellular). |
int |
LISTEN_SIGNAL_STRENGTH
This constant was deprecated
in API level 7.
by |
int |
LISTEN_SIGNAL_STRENGTHS
Listen for changes to the network signal strengths (cellular). |
Public constructors | |
|---|---|
PhoneStateListener()
Create a PhoneStateListener for the Phone with the default subscription. |
|
Public methods | |
|---|---|
void
|
onCallForwardingIndicatorChanged(boolean cfi)
Callback invoked when the call-forwarding indicator changes. |
void
|
onCallStateChanged(int state, String incomingNumber)
Callback invoked when device call state changes. |
void
|
onCellInfoChanged(List<CellInfo> cellInfo)
Callback invoked when a observed cell info has changed, or new cells have been added or removed. |
void
|
onCellLocationChanged(CellLocation location)
Callback invoked when device cell location changes. |
void
|
onDataActivity(int direction)
Callback invoked when data activity state changes. |
void
|
onDataConnectionStateChanged(int state, int networkType)
same as above, but with the network type. |
void
|
onDataConnectionStateChanged(int state)
Callback invoked when connection state changes. |
void
|
onMessageWaitingIndicatorChanged(boolean mwi)
Callback invoked when the message-waiting indicator changes. |
void
|
onServiceStateChanged(ServiceState serviceState)
Callback invoked when device service state changes. |
void
|
onSignalStrengthChanged(int asu)
This method was deprecated
in API level 5.
Use |
void
|
onSignalStrengthsChanged(SignalStrength signalStrength)
Callback invoked when network signal strengths changes. |
Inherited methods | |
|---|---|
 From
class
java.lang.Object
| |
int LISTEN_CALL_FORWARDING_INDICATOR
Listen for changes to the call-forwarding indicator.
Requires Permission: READ_PHONE_STATE
Constant Value: 8 (0x00000008)
int LISTEN_CALL_STATE
Listen for changes to the device call state.
See also:
Constant Value: 32 (0x00000020)
int LISTEN_CELL_INFO
Listen for changes to observed cell info.
See also:
Constant Value: 1024 (0x00000400)
int LISTEN_CELL_LOCATION
Listen for changes to the device's cell location. Note that this will result in frequent callbacks to the listener.
Requires Permission: ACCESS_COARSE_LOCATION
If you need regular location updates but want more control over
the update interval or location precision, you can set up a listener
through the location manager
instead.
See also:
Constant Value: 16 (0x00000010)
int LISTEN_DATA_ACTIVITY
Listen for changes to the direction of data traffic on the data connection (cellular).
Example: The status bar uses this to display the appropriate data-traffic icon.
See also:
Constant Value: 128 (0x00000080)
int LISTEN_DATA_CONNECTION_STATE
Listen for changes to the data connection state (cellular).
See also:
Constant Value: 64 (0x00000040)
int LISTEN_MESSAGE_WAITING_INDICATOR
Listen for changes to the message-waiting indicator.
Requires Permission: READ_PHONE_STATE
Example: The status bar uses this to determine when to display the voicemail icon.
Constant Value: 4 (0x00000004)
int LISTEN_NONE
Stop listening for updates.
Constant Value: 0 (0x00000000)
int LISTEN_SERVICE_STATE
Listen for changes to the network service state (cellular).
Constant Value: 1 (0x00000001)
int LISTEN_SIGNAL_STRENGTH
This constant was deprecated
in API level 7.
by LISTEN_SIGNAL_STRENGTHS
Listen for changes to the network signal strength (cellular).
Requires Permission: READ_PHONE_STATE
See also:
Constant Value: 2 (0x00000002)
int LISTEN_SIGNAL_STRENGTHS
Listen for changes to the network signal strengths (cellular).
Example: The status bar uses this to control the signal-strength icon.
See also:
Constant Value: 256 (0x00000100)
PhoneStateListener ()
Create a PhoneStateListener for the Phone with the default subscription. This class requires Looper.myLooper() not return null.
void onCallForwardingIndicatorChanged (boolean cfi)
Callback invoked when the call-forwarding indicator changes.
| Parameters | |
|---|---|
cfi |
boolean
|
Developers
void onCallStateChanged (int state,
String incomingNumber)
Callback invoked when device call state changes.
| Parameters | |
|---|---|
state |
int:
call state |
incomingNumber |
String:
incoming call phone number. If application does not have
READ_PHONE_STATE permission, an empty
string will be passed as an argument. |
void onCellInfoChanged (List<CellInfo> cellInfo)
Callback invoked when a observed cell info has changed, or new cells have been added or removed.
| Parameters | |
|---|---|
cellInfo |
List:
is the list of currently visible cells.
|
void onCellLocationChanged (CellLocation location)
Callback invoked when device cell location changes.
| Parameters | |
|---|---|
location |
CellLocation
|
void onDataActivity (int direction)
Callback invoked when data activity state changes.
| Parameters | |
|---|---|
direction |
int
|
void onDataConnectionStateChanged (int state,
int networkType)
same as above, but with the network type. Both called.
| Parameters | |
|---|---|
state |
int
|
networkType |
int
|
void onDataConnectionStateChanged (int state)
Callback invoked when connection state changes.
| Parameters | |
|---|---|
state |
int
|
void onMessageWaitingIndicatorChanged (boolean mwi)
Callback invoked when the message-waiting indicator changes.
| Parameters | |
|---|---|
mwi |
boolean
|
void onServiceStateChanged (ServiceState serviceState)
Callback invoked when device service state changes.
| Parameters | |
|---|---|
serviceState |
ServiceState
|
void onSignalStrengthChanged (int asu)
This method was deprecated
in API level 5.
Use onSignalStrengthsChanged(SignalStrength)
Callback invoked when network signal strength changes.
| Parameters | |
|---|---|
asu |
int
|
void onSignalStrengthsChanged (SignalStrength signalStrength)
Callback invoked when network signal strengths changes.
| Parameters | |
|---|---|
signalStrength |
SignalStrength
|