CODEWITHSUNDEEP
androidtelephonymanagersystem-services
user2630165
user2630165

Reputation: 311

Block incoming calls vs a system service

I wrote an application which has the capability of hanging up phone calls when they are received. In order to that I'm using the telephony manager and this permission is required: android.permission.MODIFY_PHONE_STATE

However, this permission makes my app a system app and therefore I won't be able to place it in the play store later. But I've seen apps in the play store that successfully block incoming calls ("Calls Blacklist" for example). I wonder, does anyone know what API these apps are using in order to block an incoming call and also allow these apps in the play store ?

Thanks.

Upvotes: 2

Views: 446

Answers (1)

dawncode
dawncode

Reputation: 618

You need to make use of Broadcastreceiver class. and also need to add this line in manifest to get persmission.

<uses-permission android:name="android.permission.READ_PHONE_STATE">

follow this.

Make sure TelephonyManager.CALL_STATE_RINGING is only incoming call. You cannot detect outgoing call state whether it is ringing or answered. for outgoing there only two states:

TelephonyManager.CALL_STATE_IDLE
&
TelephonyManager.CALL_STATE_OFFHOOK

Upvotes: 0

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