How to detect phone call

How to detect phone call for Android

Transcript

1. How to detect phone call @magiepooh
2. About me @magiepooh @magie_pooh Takuma Fujita
3. Company AbemaTV, Inc. (Cyber Agent, Inc.)
4. How to detect phone call
5. Pattern 1: Use TelephonyManager
6. PhoneStateChangeListener l = new PhoneStateChangeListener(); TelephonyManager tm = (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVI CE); tm.listen(l, PhoneStateListener.LISTEN_CALL_STATE); public class MyListener extends PhoneStateListener { @Override public void onCallStateChanged(int state, String incomingNumber) { switch(state){ case TelephonyManager.CALL_STATE_RINGING: //… case TelephonyManager.CALL_STATE_OFFHOOK: //… case TelephonyManager.CALL_STATE_IDLE: //… } } } http://stackoverflow.com/questions/9684866/how-to-detect-when-phone-is-answered-or-rejected
7. PhoneStateChangeListener l = new PhoneStateChangeListener(); TelephonyManager tm = (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVI CE); tm.listen(l, PhoneStateListener.LISTEN_CALL_STATE); public class MyListener extends PhoneStateListener { @Override public void onCallStateChanged(int state, String incomingNumber) { switch(state){ case TelephonyManager.CALL_STATE_RINGING: //… case TelephonyManager.CALL_STATE_OFFHOOK: //… case TelephonyManager.CALL_STATE_IDLE: //… } } } http://stackoverflow.com/questions/9684866/how-to-detect-when-phone-is-answered-or-rejected
8. PhoneStateChangeListener l = new PhoneStateChangeListener(); TelephonyManager tm = (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVI CE); tm.listen(l, PhoneStateListener.LISTEN_CALL_STATE); public class MyListener extends PhoneStateListener { @Override public void onCallStateChanged(int state, String incomingNumber) { switch(state){ case TelephonyManager.CALL_STATE_RINGING: //… case TelephonyManager.CALL_STATE_OFFHOOK: //… case TelephonyManager.CALL_STATE_IDLE: //… } } } http://stackoverflow.com/questions/9684866/how-to-detect-when-phone-is-answered-or-rejected
9. PhoneStateChangeListener l = new PhoneStateChangeListener(); TelephonyManager tm = (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVI CE); tm.listen(l, PhoneStateListener.LISTEN_CALL_STATE); public class MyListener extends PhoneStateListener { @Override public void onCallStateChanged(int state, String incomingNumber) { switch(state){ case TelephonyManager.CALL_STATE_RINGING: //… case TelephonyManager.CALL_STATE_OFFHOOK: //… case TelephonyManager.CALL_STATE_IDLE: //… } } } http://stackoverflow.com/questions/9684866/how-to-detect-when-phone-is-answered-or-rejected
10. PhoneStateChangeListener l = new PhoneStateChangeListener(); TelephonyManager tm = (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVI CE); tm.listen(l, PhoneStateListener.LISTEN_CALL_STATE); public class MyListener extends PhoneStateListener { @Override public void onCallStateChanged(int state, String incomingNumber) { switch(state){ case TelephonyManager.CALL_STATE_RINGING: //… case TelephonyManager.CALL_STATE_OFFHOOK: //… case TelephonyManager.CALL_STATE_IDLE: //… } } } http://stackoverflow.com/questions/9684866/how-to-detect-when-phone-is-answered-or-rejected
11. PhoneStateChangeListener l = new PhoneStateChangeListener(); TelephonyManager tm = (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVI CE); tm.listen(l, PhoneStateListener.LISTEN_CALL_STATE); public class MyListener extends PhoneStateListener { @Override public void onCallStateChanged(int state, String incomingNumber) { switch(state){ case TelephonyManager.CALL_STATE_RINGING: //… case TelephonyManager.CALL_STATE_OFFHOOK: //… case TelephonyManager.CALL_STATE_IDLE: //… } } } http://stackoverflow.com/questions/9684866/how-to-detect-when-phone-is-answered-or-rejected
12. Need Permission… <uses-permission android:name= "android.permission.READ_PHONE_STATE"/>
13. Pattern 2: Use AudioManager
14. AudioManager. OnAudioFocusChangeListener • Interface definition for a callback to be invoked when the audio focus of the system is updated • Added in API level 8
15. public class MyAudioFocusMonitor implements AudioManager.OnAudioFocusChangeListener { private final AudioManager audioManager; public MyAudioFocusMonitor(Context context) { audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); } public void start() { audioManager.requestAudioFocus(this, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN); } public void stop() { audioManager.abandonAudioFocus(this); } }
16. public class MyAudioFocusMonitor implements AudioManager.OnAudioFocusChangeListener { private final AudioManager audioManager; public MyAudioFocusMonitor(Context context) { audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); } public void start() { audioManager.requestAudioFocus(this, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN); } public void stop() { audioManager.abandonAudioFocus(this); } }
17. public class MyAudioFocusMonitor implements AudioManager.OnAudioFocusChangeListener { private final AudioManager audioManager; public MyAudioFocusMonitor(Context context) { audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); } public void start() { audioManager.requestAudioFocus(this, AudioManager.STREAM_MUSIC, // Request permanent focus. AudioManager.AUDIOFOCUS_GAIN); } public void stop() { audioManager.abandonAudioFocus(this); } }
18. public class MyAudioFocusMonitor implements AudioManager.OnAudioFocusChangeListener { private final AudioManager audioManager; public MyAudioFocusMonitor(Context context) { audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); } public void start() { audioManager.requestAudioFocus(this, AudioManager.STREAM_MUSIC, // Request permanent focus. AudioManager.AUDIOFOCUS_GAIN); } public void stop() { audioManager.abandonAudioFocus(this); } }
19. Audio Focus • AUDIOFOCUS_GAIN • unknown duration • AUDIOFOCUS_GAIN_TRANSIENT • a short amount of time • AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE • ≒AUDIOFOCUS_GAIN_TRANSIENT • a short amount of time, during which no other applications, or system components, should play anything. • AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK • ≒AUDIOFOCUS_GAIN_TRANSIENT • other audio applications to keep playing after having lowered their output level
20. @Override public void onAudioFocusChange(int focusChange) { switch (focusChange) { case AudioManager.AUDIOFOCUS_REQUEST_GRANTED: // play break; case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT: // pause break; case AudioManager.AUDIOFOCUS_LOSS: // stop audioManager.abandonAudioFocus(this); break; default: break; } }
21. @Override public void onAudioFocusChange(int focusChange) { switch (focusChange) { case AudioManager.AUDIOFOCUS_REQUEST_GRANTED: // … (play break; case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT: // … (pause break; case AudioManager.AUDIOFOCUS_LOSS: // … (stop audioManager.abandonAudioFocus(this); break; } }
22. @Override public void onAudioFocusChange(int focusChange) { switch (focusChange) { case AudioManager. AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK: // Lower the volume case AudioManager. AUDIOFOCUS_GAIN: // Raise it back to normal } }
23. Conclusion • TelephonyManager needs permission • AudioManager do not need permission • but status is complicated
24. (๑•̀ŷ•́)و✧