Play music in the background of the android mobile phone, set an alarm clock, make a call, and after the phone is hung up, the alarm and music will sound at the same time.

Play music in the background of the android mobile phone, set an alarm clock, make a call, and after the phone is hung up, the alarm and music will sound at the same time.

Modify:

Frameworks \ base \ media \ java \ android \ media \ MediaFocusControl. java:

1. import packages:

Import com. android. internal. telephony. ITelephony;

Import android. OS. ServiceManager;

2. added the getPhoneCallState () method for obtaining the current Phone Call State ():

Private int getPhoneCallState (){

Int phoneCallState = TelephonyManager. CALL_STATE_IDLE;

TelephonyManager telephonyManager = (TelephonyManager) mContext. getSystemService (Context. TELEPHONY_SERVICE );

ITelephony telephonyService = ITelephony. Stub. asInterface (ServiceManager. getService (Context. TELEPHONY_SERVICE ));

If (telephonyService! = Null ){

Log. w (TAG, "getPhoneCallState: mTelephonyService! = Null ");

Try {

PhoneCallState = telephonyService. getPreciseCallState ();

Log. w (TAG, "getPhoneCallState: telephonyService. getPreciseCallState () =" + phoneCallState );

} Catch (RemoteException ex ){

If (telephonyManager! = Null ){

PhoneCallState = telephonyManager. getCallState ();

Log. w (TAG, "getPhoneCallState: telephonyManager. getCallState () =" + phoneCallState );

}

Log. w (TAG, "Catch exception when getPreciseCallState: ex ="

+ Ex. getMessage ());

}

} Else {

Log. w (TAG, "getPhoneCallState: telephonyService = null ");

If (telephonyManager! = Null ){

PhoneCallState = telephonyManager. getCallState ();

Log. w (TAG, "getPhoneCallState: telephonyManager. getCallState () =" + phoneCallState );

}

}

Log. w (TAG, "getPhoneCallState: phoneCallState =" + phoneCallState );

Return phoneCallState;

}

3. Modify

Private boolean canReassignAudioFocus (){

// Focus requests are rejected during a phone call or when the phone is ringing

// This is equivalent to IN_VOICE_COMM_FOCUS_ID having the focus

If (! MFocusStack. isEmpty () & mFocusStack. peek (). hasSameClient (IN_VOICE_COMM_FOCUS_ID )){

Return false;

}

Return true;

}

Is

Private boolean canReassignAudioFocus (){

// Focus requests are rejected during a phone call or when the phone is ringing

// This is equivalent to IN_VOICE_COMM_FOCUS_ID having the focus

If (! MFocusStack. isEmpty () & mFocusStack. peek (). hasSameClient (IN_VOICE_COMM_FOCUS_ID) & (getPhoneCallState ()! = TelephonyManager. CALL_STATE_IDLE )){

Log. w (TAG, "canReassignAudioFocus: return false ");

Return false;

}

Log. w (TAG, "canReassignAudioFocus: return true ");

Return true;

}