package android.telephony;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.telephony.ServiceState;
import android.telephony.CellLocation;
import android.util.Log;
import com.android.internal.telephony.IPhoneStateListener;
/**
* A listener class for monitoring changes in specific telephony states
* on the device, including service state, signal strength, message
* waiting indicator (voicemail), and others.
* <p>
* 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 {@link TelephonyManager#listen TelephonyManager.listen()}.
* <p>
* 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.
*/
public class PhoneStateListener {
/**
* Stop listening for updates.
*/
public static final int LISTEN_NONE = 0;
/**
* Listen for changes to the network service state (cellular).
*
* @see #onServiceStateChanged
* @see ServiceState
*/
public static final int LISTEN_SERVICE_STATE = 0x00000001;
/**
* Listen for changes to the network signal strength (cellular).
* <p>
* Example: The status bar uses this to control the signal-strength
* icon.
*
* @see #onSignalStrengthChanged
*/
public static final int LISTEN_SIGNAL_STRENGTH = 0x00000002;
/**
* Listen for changes to the message-waiting indicator.
* <p>
* Example: The status bar uses this to determine when to display the
* voicemail icon.
*
* @see #onMessageWaitingIndicatorChanged
*/
public static final int LISTEN_MESSAGE_WAITING_INDICATOR = 0x00000004;
/**
* Listen for changes to the call-forwarding indicator.
*
* @see #onCallForwardingIndicatorChanged
*/
public static final int LISTEN_CALL_FORWARDING_INDICATOR = 0x00000008;
/**
* Listen for changes to the device's cell location. Note that
* this will result in frequent callbacks to the listener.
* {@more}
* Requires Permission: {@link android.Manifest.permission#ACCESS_COARSE_LOCATION
* ACCESS_COARSE_LOCATION}
* <p>
* 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 {@link android.location.LocationManager location manager}
* instead.
*
* @see #onCellLocationChanged
*/
public static final int LISTEN_CELL_LOCATION = 0x00000010;
/**
* Listen for changes to the device call state.
*
* @see #onCallStateChanged
*/
public static final int LISTEN_CALL_STATE = 0x00000020;
/**
* Listen for changes to the data connection state (cellular).
*
* @see #onDataConnectionStateChanged
*/
public static final int LISTEN_DATA_CONNECTION_STATE = 0x00000040;
/**
* 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 #onDataActivity
*/
public static final int LISTEN_DATA_ACTIVITY = 0x00000080;
public PhoneStateListener() {
}
/**
* Callback invoked when device service state changes.
*
* @see ServiceState#STATE_EMERGENCY_ONLY
* @see ServiceState#STATE_IN_SERVICE
* @see ServiceState#STATE_OUT_OF_SERVICE
* @see ServiceState#STATE_POWER_OFF
*/
public void onServiceStateChanged(ServiceState serviceState) {
// default implementation empty
}
/**
* Callback invoked when network signal strength changes.
*
* @see ServiceState#STATE_EMERGENCY_ONLY
* @see ServiceState#STATE_IN_SERVICE
* @see ServiceState#STATE_OUT_OF_SERVICE
* @see ServiceState#STATE_POWER_OFF
*/
public void onSignalStrengthChanged(int asu) {
// default implementation empty
}
/**
* Callback invoked when the message-waiting indicator changes.
*/
public void onMessageWaitingIndicatorChanged(boolean mwi) {
// default implementation empty
}
/**
* Callback invoked when the call-forwarding indicator changes.
*/
public void onCallForwardingIndicatorChanged(boolean cfi) {
// default implementation empty
}
/**
* Callback invoked when device cell location changes.
*/
public void onCellLocationChanged(CellLocation location) {
// default implementation empty
}
/**
* Callback invoked when device call state changes.
*
* @see TelephonyManager#CALL_STATE_IDLE
* @see TelephonyManager#CALL_STATE_RINGING
* @see TelephonyManager#CALL_STATE_OFFHOOK
*/
public void onCallStateChanged(int state, String incomingNumber) {
// default implementation empty
}
/**
* Callback invoked when connection state changes.
*
* @see TelephonyManager#DATA_DISCONNECTED
* @see TelephonyManager#DATA_CONNECTING
* @see TelephonyManager#DATA_CONNECTED
* @see TelephonyManager#DATA_SUSPENDED
*/
public void onDataConnectionStateChanged(int state) {
// default implementation empty
}
/**
* Callback invoked when data activity state changes.
*
* @see TelephonyManager#DATA_ACTIVITY_NONE
* @see TelephonyManager#DATA_ACTIVITY_IN
* @see TelephonyManager#DATA_ACTIVITY_OUT
* @see TelephonyManager#DATA_ACTIVITY_INOUT
*/
public void onDataActivity(int direction) {
// default implementation empty
}
/**
* The callback methods need to be called on the handler thread where
* this object was created. If the binder did that for us it'd be nice.
*/
IPhoneStateListener callback = new IPhoneStateListener.Stub() {
public void onServiceStateChanged(ServiceState serviceState) {
Message.obtain(mHandler, LISTEN_SERVICE_STATE, 0, 0, serviceState).sendToTarget();
}
public void onSignalStrengthChanged(int asu) {
Message.obtain(mHandler, LISTEN_SIGNAL_STRENGTH, asu, 0, null).sendToTarget();
}
public void onMessageWaitingIndicatorChanged(boolean mwi) {
Message.obtain(mHandler, LISTEN_MESSAGE_WAITING_INDICATOR, mwi ? 1 : 0, 0, null)
.sendToTarget();
}
public void onCallForwardingIndicatorChanged(boolean cfi) {
Message.obtain(mHandler, LISTEN_CALL_FORWARDING_INDICATOR, cfi ? 1 : 0, 0, null)
.sendToTarget();
}
public void onCellLocationChanged(Bundle bundle) {
CellLocation location = CellLocation.newFromBundle(bundle);
Message.obtain(mHandler, LISTEN_CELL_LOCATION, 0, 0, location).sendToTarget();
}
public void onCallStateChanged(int state, String incomingNumber) {
Message.obtain(mHandler, LISTEN_CALL_STATE, state, 0, incomingNumber).sendToTarget();
}
public void onDataConnectionStateChanged(int state) {
Message.obtain(mHandler, LISTEN_DATA_CONNECTION_STATE, state, 0, null).sendToTarget();
}
public void onDataActivity(int direction) {
Message.obtain(mHandler, LISTEN_DATA_ACTIVITY, direction, 0, null).sendToTarget();
}
};
Handler mHandler = new Handler() {
public void handleMessage(Message msg) {
//Log.d("TelephonyRegistry", "what=0x" + Integer.toHexString(msg.what) + " msg=" + msg);
switch (msg.what) {
case LISTEN_SERVICE_STATE:
PhoneStateListener.this.onServiceStateChanged((ServiceState)msg.obj);
break;
case LISTEN_SIGNAL_STRENGTH:
PhoneStateListener.this.onSignalStrengthChanged(msg.arg1);
break;
case LISTEN_MESSAGE_WAITING_INDICATOR:
PhoneStateListener.this.onMessageWaitingIndicatorChanged(msg.arg1 != 0);
break;
case LISTEN_CALL_FORWARDING_INDICATOR:
PhoneStateListener.this.onCallForwardingIndicatorChanged(msg.arg1 != 0);
break;
case LISTEN_CELL_LOCATION:
PhoneStateListener.this.onCellLocationChanged((CellLocation)msg.obj);
break;
case LISTEN_CALL_STATE:
PhoneStateListener.this.onCallStateChanged(msg.arg1, (String)msg.obj);
break;
case LISTEN_DATA_CONNECTION_STATE:
PhoneStateListener.this.onDataConnectionStateChanged(msg.arg1);
break;
case LISTEN_DATA_ACTIVITY:
PhoneStateListener.this.onDataActivity(msg.arg1);
break;
}
}
};
}
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