How to end an incoming call programmatically on Android 8.0 Oreo

Question

Up to Android 7.1 it was possible to end an incoming call by using the ITelephony.endCall() method and giving your app the permissions

Answer 1

Add these permissions:

Also ask for runtime permission for ANSWER_PHONE_CALLS and READ_CALL_LOG permissions (as they are Dangerous Permissions).

For android oreo and below:

Create package com.android.internal.telephony in your project, and put this in a file called "ITelephony.aidl":

package com.android.internal.telephony; 
interface ITelephony {      
    boolean endCall();     
}

For above android oreo:

TelecomManager class provides direct method to end call(provided in code).

After above steps add method provided below: (Before this make sure to initialize TelecomManager and TelephonyManager).

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
    telecomManager = (TelecomManager) getSystemService(Context.TELECOM_SERVICE);
}

private boolean declinePhone() {
    if (telecomManager.isInCall()) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            if (telecomManager != null) {
                boolean success = telecomManager.endCall();
                return success;
            }
        } else {
            try {
                Class classTelephony = Class.forName(telephonyManager.getClass().getName());
                Method methodGetITelephony = classTelephony.getDeclaredMethod("getITelephony");
                methodGetITelephony.setAccessible(true);
                ITelephony telephonyService = (ITelephony) methodGetITelephony.invoke(telephonyManager);
                if (telephonyService != null) {
                    return telephonyService.endCall();
                }
            } catch (Exception e) {
                e.printStackTrace();
                Log.d("LOG", "Cant disconnect call");
                return false;
            }
        }
    }
    return false;
}